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1. L IDIXI 8 To edit the ground water input file click on the Sroundwater Parameters SHALLST mm DEEPST mm GW_DELAY days ALPHA BF days GWOMIN mrn gw in the Select Input Table section of Edit us 1000 a oos B L L L Gw REVAF REVAPMN mm RCHRBG DP fraction GWHT m Gw SFrLD m3 m3 Subbasin Inputs dialog box In the dialog box 0 02 fi o o 1 0 003 l A ee SHALLST_N mg N I GWSOLP mg P I HLIFE NGW days that opens Figure 61 with the existing data 0 eo o p make modifications by clicking Edit Values M gii ME T Extend ALL GW Parameters Subbasins Land Use Soils button to activating all textboxes Similarly Cancel Eats AM l AI IV Extend Edits to Current HAU B after the modification the user has three seras li T Extend Edits to All HRUS P i Ee J Extend Edits to Selected HRUS options to Save Edits to other HRUs Figure 61 Edit Ground Water input data dialog 60 9 To edit the consumptive water use input data click on th e wus in the Select Input Table section of Edit Subbasin Inputs dialog box In the dialog box Figure 62 that opens with the existing data click Edit Values button then the user can modifv the data Also the current edits can be saved to other subbasins Edit Water Use Parameters lel xi Monthly Water Use Parameter z 10 4 m3 Jan Feb Mar Apr May Jun WU PND jo jo jo jo jo jo WU ty oreo Jul Aug Sep Oct Nov Dec fo jo jo jo jo jo T i
2. Create HRUs Maps and Tables Lariluse Map C M w_Projects Tutorial B angkok Example Source crop andus Soil Map CMW ProjectsiT utorial DangkokSCxample1 Source soil soil asc e es ATERBASE Landuse Table Example1_landuses vi Soil Table v Example l_soils FAQ soils luLal suils Figure 16 Selecting the Soil Table 18 If we look at the MapWindow displav and un check the displav of the mask we see that the subbasins have been numbered and the landuse and soil grids added Th e legends for them also show the landuse codes and soil names Figure 18 3 MapWindow GIS Example1 Watershed Shapefile demw sh C Stream Reach Shapefile net dv Qutletsinlets Shaperile outlet C Focus Mask amask asc it FI Base DEM dem asc at Data Layers AP landuse zH E RNGE fi east Preview Map t Legend Lat 33 158 Long 95 931 x 6 439 210 Y 1 120 979 417 Meters Figure 18 Landuse and soil layers added 19 We are now ready to divide HRUs also according to slope bands We want to create the slope bands 0 0 6 0 6 1 5 and 1 5 upwards where the numbers are percentages To do this type 0 6 in the Set bands for s lope box click Insert then type 1 5 in the box and click Insert again Figure 19 We also have two further options to consider spl itting landuses and exempting landuses Splitting landuses allows us to divide existing landuses Split Landu
3. Fie Edit View Insert Format Records Tools Window Help M HN 42RY i SB A 24th T I 2 Examplel Database Access 2000 file format Figure 33 Weather stations table j amp tmp2902 Table For each station nnnn we will also need two other l a it A tables pconnnn and tmpnnnn containing precipitation 3 1 3 1977 aA 33 and temperature data respectively Figure 34 shows a me 6 7 2 8 the tmp2902 table and we see it contains a record for 5 1 6 1977 16 1 22 sss 6 1 6 1977 6 1 1 each dav with date maximum and minimum hi WASE 2 2 2 8 temperatures in C 99 is used to indicate an 8 1 8 1977 10 28 9 1 9 1977 15 6 9 4 unavailable reading l 10 1 10 4977 3 9 12 8 Precipitation tables are similar but have a single fi 21 column headed PCP precipitation in mm instead of Figure 34 Temperature table MAX and MIN 32 To define the weather data and to identifv the weather generator file click SWAT Setup and Run on the main MWSWAT form and then click Choose under Weather Sources Since we are using prepared data we can use the tables to tell MWSWAT what the period of our run will be If we were using global data we would need to fill in the start and finish dates before we opened the Weather Sources form In the Weather Sources form we select EE GW eT ae Database tables then Example1_weather from the pull down menu which offers all table names in our project database con
4. Soil and Water Assessment Tool SWAT The following are the kev procedures necessarv for modeling using SWAT e Create SWAT project e Delineate the designated watershed for modeling e Define landuse soil slope band data grids e Determine the distribution of HRUs based on the landuse soil and s lope data e Define rainfall temperature and other weather data e Write the SWAT input files requires access to data on soil weather land cover plant growth fertilizer and pesticide use tillage and urban activities e Edit the input files if necessary e Setup and run SWAT requires information on simulation period PET estimation method and other options e View SWAT Output Now we have completed the first four procedures In this tutorial we will concentrate on preparing the rest of the input data for SWAT running the model and viewing the output from the model 30 Define Weather Data Commonly users supply precipitation and temperature data and rely on weather generation simulation for the other weather data required by SWAT It is possible however to also provide observed solar radiation wind speed and relative humidity data There are 3 ways of defining precipitation and temperature data 1 Using global weather data available from the web This has been packaged for MWSWAT and is entirely automatic it selects up to 6 stations nearest to the watershed from the global data selects the nearest for each subb
5. E TXE19 DI Tx620 E 7 S Legend E Preven Map Lat 33 157 Long 95 700 X 27 764 73 Y 1 120 903 066 Meters Figure 47 Ready to start animation On the Visual Output form click Animate The animation controls become available Figure 48 At this point the values for subbasins 1 and 2 are set to their proper initial values Animation January 1977 lt u J Speed 5 Figure 48 Animation controls There are controls to run pause and rewind the animation The speed can also be adjusted up or down As the animation runs the values in the results shapefile are changed to those for the date also shown in the display and the MapWindow display updated The animation can also be controlled manually by dragging the slider J If you want to change the colour scheme for the animation click Save first so that the maximum and minimum values are available for calculating the colour breaks The attribute values in the results shapefile will be left at the final date used in the animation If you want to preserve such a file perhaps changing its name to reflect the date remember to rename all files shp dbf etc Only one variable can be used in an animation results shapefile Finallv Close the Visual Output form 46 Closing down Before closing down consider saving the projec t using the Save run option Save SWAT run E which is found in the SWAT Setup and Run form Currentiv the SWAT
6. M Constant Daily Loadings Flow m3 Sediment ton Organic N kg Organic P kg 0 0 jo 0 Nitrate NO3 kg Ammonia NH3 ka Nitrite NO2 kg Mineral P kg 0 0 0 0 CBOD kal Dissolved Oxygen ka Chlorophyll a ka Soluble Pesticide ka 0 0 jo 0 Sorbed Pesticide ka Persistent bacteria Less Persistent Bacteria Conservative Metal 1 ka 0 0 fo 0 Conservative Metal 2 kg Conservative Metal 3 ka 0 0 M Observed Loadinas Input Files Average Annual Daily Loading File l Edit Values Cancel Edits Save Edits Exit Figure 54 Edit Inlet Discharge Inputs Dialog loadings and daily loadings Choose a format by clicking the button next to the format to be used 53 The default inlet discharge data format option is constant dailv loadings If vou select this format vou will be prompted to input average daily flow m sediment loading tons and organic N organic P NO and mineral P loadings If you choose Annual Records Monthly Records or Daily Records option you will be prompted to load the data from the disk 7 Click OK to complete the editing of inlet discharges for a subbasin 8 If you wish to edit the inlets in another subbasin select it from the list in the Edit Inlet Discharger Input dialog box Click Exit to complete editing of inlet dischargers input in all subbasins Since there are no inlet dischargers defined in this tutorial you will get a message
7. Results OM results shp ORGPkg ha E o 0 584 E 0 584 1 17 W117 1 75 IM 175 234 BB 2 34 2 92 B Terrain Analysis Weather stations Watershed Shapetile demw shp v Stream Reach Shapefile net demnet shp v OutletsAnlets Shaperile outlet shp v FullHRUs o Focus Mask amask asc H Base DEM dem asc Data Layers H landuse MM RHGE IM past fi FRSD i WATR BI Acre Buren 7 No Data soil E T047 E T236 E T357 A T619 E Tx620 T Lat 32 926 Long 95 856 X 13 348 421 Y 1 095 012 533 Meters Figure 46 New variable displayed 43 Vou can include as manv variables as vou wish in a results shapefile Variables from reach and subbasin outputs and HRU if single mav be mixed The same summary method total daily monthly annual mean maximum minimum is used for all variables in one results shapefile Make sure you use a Summary method which makes physical sense for exam ple do not use total for a rate of flow The attributes of shapefiles are stored in dbf files and these may be edited with for example Excel This means you can calculate and then display other derived results Dynamic Visualisation Dynamic visualisation allows us to animate the time series for an output variable It works much like static visualisation involving the creation and display of a results shapefile but as the variable is animated the attribute values in the shapefile are changed dyn amically the a
8. There are no inlets in the watershed 54 Step 4 Edit Reservoir Input 1 To edit the reservoirs on the Edit Input menu select Reservoirs A dialog box will appear with a list of the subbasins containing reservoirs 2 To edit the reservoirs within a subbasin click on the number of the subbasin in the Edit Reservoir s Inputs dialog box 3 Since there are no reservoirs defined in this project vou will get a message There are no reservoirs in the watershed Step 5 Edit Subbasins Data Edit Subbasin Inputs l Ea i A L M Select Input Table To Edit M Select Subbasin HRU 1 To edit the subbasin input files select the Subbasin yee es hose Data option under the Edit Input menu Edit Subbasin Hu 7 2x ne I Inputs dialog box will appear Figure 55 Sails Slope P ppear imp ETT Tx633 foes z This dialog box contains the list of subbasins land uses 4 soil tvpes and slope levels within each subbasin and the Figure 55 Edit Subbasin Inputs main dialog input files corresponding to each subbasin land use soil slope combination To select an input file select the subbasin land use soil type and slope that you would like to edit When you select a subbasin the combo boxes of land uses soil types and slope levels will be activat ed in sequence Specify the subbasin land use soil combination of interest by selecting each category in the combo box 2 To edit the soil physical data click on
9. ones Small ones may be determined by a threshold area or by thresholds for landuse i Figure 29 Choosing area soil and slope bands threshold Multiple HRUs by area are defined by selecting the Multiple HRUs option then the By Area option in the next pull down menu Figure 29 and then setting for example a limit of 500 ha either by moving the slider or typing in the box Figure J 27 0 Threshold Area Ha 11622 500 Figure 30 Setting area threshold 27 Multiple HRUs bv percentage are defined bv choosing minimum 0 Landuse 3 percentages of landuse soil and then slope band Select this option by i io choosing Multiple HRUs and then By Percentage as the HRU Threshold A 7 method Soil 10 We will first set the landuse percentage to 10 bv moving the slider or tvping 0 aipat 41 in the box and click Go This means for each subbasin we will not include ii 0 any landuse for which the percentage area in the subbasin is less than 10 For example in the Basin report for subbasin 13 earlier we can see that AGRL and WATR have percentages less than 10 So all HRUs in subbasin 13 with landuse AGRL or WATR are eliminated and their areas are proportionately redistributed amongst the other potential HRUs in the subbasin Figure 31 Setting percentage thresholds The number 37 at the end of the landuse slider indicates that this is the lowest percentage for a dominant landuse across all the subbasins Trying to set the p
10. Online Data Plug in Open Metadata Manager Shapefile Editor UpdateMeasurement Plugin Watershed Delineation Preview Map S Legend 0 000 Y 0 000 JB Figure 1 Choosing plug ins MapwWindow maps and files MapWindow uses both grid or raster files and shapefiles or vector files Grids are like Z dimensional arravs of points called cells Cells have dimensions locations and numerical values such as the elevation height of the cell a number representing the landuse of the cell etc Shapefiles alwavs consist of points which repre sent locations Thev are of three tvpes point the points represent isolated points such as the locations of weather stations line the points are organized into sequences representing lines such as roads or rivers or polygon the points are organi zed into lines where the first point is the same as the last representing closed loops such as watershed boundaries The shapes points lines or polygons can have attributes For example a polygon shapefile might have stored for each polygon its identity a string or a number its area a number and its perimeter length a number Grids and shapefiles are stored in files with the following suffixes e asc ASCII grid also readable by tools like WordPad e bgd binary grid e tif GeoTiff grid e shp Shapefile e prj Projection information used by both grids and shapefiles e dbf Shapefile attributes also readable by Excel There are als
11. The WaterBase document Geo_processing explains in more detail how to obtain local maps in UTM projection from global maps You can find it on the Docum ents page at http www waterbase org 85
12. and 2 categories of bacteria or load PCS data directly If you select the Annual Records option you will be prompted to load the data from disk by clicking on the open folder button or from PCS by clicking on the Load PCS button If you select the Monthly Records or Daily Records option you will be prompted to load data from the disk Click OK to complete the editing of point discharges database for a subbas in Figure 53 Edit Point Discharge Inputs Dialog 52 4 If you wish to edit the point sources in another subbasin select it from the list in the Edit Point Source Inputs dialog box Click Exit to complete editing of point discharges database in all subbasins 5 Since there are no point sources defined in this tutorial you will get a message There are no point sources in the watershed Step 3 Edit Inlet Dischargers Input 1 Select the Inlet Discharges option under the Edit Input menu 2 If there are any inlet dischargers in the project Edit Inlet Input dialog box with a list of subbasins containing inlet dischargers will appear Figure 54 3 You will be able to modify the inlet input information using a procedure similar to editing the point dischargers database 4 The dialog box allows the input of inlet discharge data in one of four formats constant daily loadings average annual loadings average monthly Edit Inlet Inputs Select Inlet Data Type Constant L JOIXI
13. click OK Click Apply and OK in the Coloring Scheme Editor and close the Legend Editor The MapWindow display now displays the results shapefile appropriately coloured Figure 45 This colouring scheme will be associated with the results shapefile until you change the scheme Start Color Preview Select from color palette C or select by name End Color C Single color ramp Select from color palette or select by name Calculate new breaks Number of Breaks 5 Figure 44 Choosing colours 41 MapWindow GIS Example1 D Ag Fl Results FM results shp 0 4 46 4 46 8 93 8 93 13 4 13 4 17 9 17 9 EM Terrain Analysis Weather stations Watershed Shapefile demw shp Stream Reach Shapefile net demnet shp OutletsAnlets ShapeFile outlet shp v FullHRUs CI Focus Mask amask asc H Base DEM dem asc Data Layers FI landuse GM RNGE Mi past fl FRSD MB WATR B acre B URBN No Data El soil Gl tx047 E TX236 E TX357 E tx619 E Tx620 FI Tx633 t Legend EJ Preview Map Lat 33 158 Long 95 916 Xx 7817 263 Y 1 120 303 066 Meters Figure 45 Displaying results 42 We can choose a different variable to display by changing the variable we selected in the list in the Visualise Output form to subbasin ORGPkg ha and clicking Save The colour scheme is recalibrated and the new variable displayed Figure 46 77 MapWindow GIS Example1
14. options and clicking on l Terrain Analysis the map more than H OutletsAnlets Shaperile outlet once before Done to 7 Stream Reach Shapetile net dav MI Focus Mask amask asc i identifv more than one SEA fice DE damian cH outlet and so model A Tas tae more than one basin to identify reservoirs and to identify inlet points Click Done to Return Click to place outlets or inlets on or hear a stream reach Outlets Inlets CI Reservoir Outlet Preview Map t Legend Lat 32 966 Long 95 782 Xx 20 298 661 Y 1 099 510 814 Meters Click the final Run button on the watershed delineation form and when it has finished calculating Close it Figure 13 Marking the outlet 15 Our MapWindow display now has an extra layer showing the subbasins the areas that drain into the stream reaches and watershed delineation is complete Figure 14 3 MapWindow GIS Example1 File Edit View Plug ins GIS Tools Shapefile Editor Watershed Delineation MWSWAT Help Oe BSP VRAA AJ i Bs wo OT l Terrain Analysis Watershed Shapefile demw sh DI Stream Reach Shapefile net d Outletsinlets Shaperile outlet 4 Focus Mask amask asc zH Base DEM dem asc iH 1 9 N O K W Data Layers Preview Map t Legend Lat 33 157 Long 95 994 X 560 166 Y 1 120 826 714 Meters Figure 14 Watershed delineation complete 16 HRU definition SWAT uses subdivisions of subbasins called hvdrological resp
15. 3 legend Ware at RG ine tini GIB Data Layers EA A tie ELU ee 2 By making the landuse grid visible we would Lal emask RB Se Ye VEST a Sail see we need landuse map na_land_3 idem st UI EL DAI 3 The SRTM tile we want from the attribute 7 na bas ILI S Boe a aes ie i mm soil grid OI Pal table for dem srtm grid is S 17 06 If we 0 landuse_ DI We nd uk wanted to model more of the basin we would 0v0 WEG S Ji tata 0 contry J Nm also need the next tile to the East S 18 06 J7 world i Attribute Table Editor 1 of 1727 Selected CASWAT SEA DYD World_Data_Gnds dem_sitm_gnd shp COL bes SRIM V2 V3 A v Figure 73 Selecting soil map and SRTM tile 80 We zoom in on the area of interest and make a mask for clipping To do this ork UON ee Make sure the Shapefile Editor is selected in the Plug ins menu Click on the Create new shapefile icon el Click on the box on the right select a folder and type for example mymask Select Shapefile Type Polygon and click OK You see a warning about the new shapefile having no projection yet Take the default action of accepting the project projection which is lat long because we have loaded lat long maps and click OK This just creates a mvmask prj file You get a warning about loading other maps if necessary to set the new shapefile s extents This can be ignored since we have other such maps loaded Click OK Click on the Add
16. SWAT input files are reported to be written Click OK Figure 37 Heat unit estimation option 35 Run SWAT At this point we can edit the input files using the Edit files button or we can immediately Run SWAT We should see ex C Program FilestMapWindowP luginsiMWSWA Tiswat2005 exe SWAT2BB5 Soil amp Water Assessment Tool Version Program reading from file cio executing Executing vear 1 Executing vear 2 Figure 38 SWAT running followed by EATI E3 Click OK l SWAT run successful Figure 39 Success 36 Visualisation MWSWAT offers the possibility of visualising the results from running SWAT by colourin g a map of the subbasins according to the values of one of the SWAT output variables Such outputs may be subbasin variables from output sub or reach variables from output rch or if a single HRU option was chosen from output hru Static visualisation displays just one value for each subbasin Since SWAT outputs are time series this has to be a summary figure of some kind Available summary methods are total daily monthly yearly mean maximum and minimum e Dynamic visualisation displays time series by dynamically animating the MapWindow display Visualisation creates a shapefile containing the subbasin boundaries and then adds attributes for the variable values for each subbasin In the static case there can be many variables but sharing th e same summary method In the dynami
17. Selected Subbasins 4 Edit Values Extend Parameter Edits elected Subbasin Extend ALL SUB Parameters Subbasins Cancel Edits IV Extend Edits to Current Subbasin F Extend Edits to All Subbasins Save Edits Te eae EA we Exit Extend Edits to Selected Subbasins Figure 62 Edit water use input data dialog 10 To edit the management file input data c lick on the mgt in the Select Input Table section of Edit Subbasin Inputs dialog box A new dialog box Figure 63 will appear and display the management data editor This dialog has two tabs General Paramete rs and Operations In the first tab the user can modify the general parameters concerned with Initial Plant Growth General Management Urban Management Irrigation Management and Tile Drain Management In the second tab the user can arrange the detailed management options on the current HRU The management operations can be scheduled by Date or by 61 Heat Units The settings of the management operations can also be extended to other HRUs that the user has defined Edit Management Parameters Pele General Parameters Operations le eo M Initual Plant Growth Initial Land Cover LALINIT BID INIT PHU_PLT Curent EEEE oro JNoCopGroming sl 57 p perauon Crop Heat Units Plant begin growing se PAST 0 15 FEDE Harvest and kill operati PAST 1 2 BIOMIX CN2 USLE_P BID MIN FILTE
18. a new regular shape icon ss Select Rectangle Click on the map somewhere in the area of interest and click Done It makes it easier if you right click on the legend entry for mymask select Properties and change Show Fill to False 81 10 With mvmask selected in the legend set MapWindow to Select mode Ex click on the rectangle which makes it go yellow and click the Move a vertex icon kal 11 You can now drag the vertices of the rectangle in any way you wish to make the shape cover the area of interest Figure 74 Make sure you allow plenty of space between the shape edges and that area or you may have problems later 9 MapWindow GIS World Data Grids View Plug ins GIS Tools Shapefile Editor Watershed Delineation MWSWAT Help LAAA Ji El EM Data Layers mymask mf W amask_Reprojected W J na_bas_ll_r500m o E Preview Map es Legend Lat 32 821 Long 96 471 Figure 74 Dragging a vertex 82 Clip the soil map Once we have positioned the vertices as we wish we need we can use the mask to cl ip the soil map 1 Gheck Add Results to Map Figure 75 Click Select Shapes click somewhere in the Load the soil map na_soil_3 tif Again accept the projection as the project projection Note that the soil map is quite coarse with large cells which is why we need large margins for our mask we will lose cells at the edges Select GIS Tools Raster Clip Grid with Polygon to bring up a Clip Grid
19. is grouped into categories of weather unique areas of land cover soil and management within the subbasin ponds reservoirs groundwater and the main channel or reach draining the subbasin The loading and movement of runoff sediment nutrient and pesticide loadings to the main channel in each subbasin is si mulated considering the effect of several physical processes that influence the hydrology For a detailed description of the capabilities of the SWAT refer to Soil and Water Assessment Tool User s Manual Version 2000 Neitsch et al 2002 published by the Agricultural Research Service and the Texas Agricultural Experiment Station Temple Texas The manual can also be downloaded from the SWAT Web site www brc tamus edu swat swatdoc html new Objectives The objectives of this exercise are to 1 set up a SWAT project using MWSWAT and 2 become familiar with the capabilities of SWAT Setting up MapWindow MWSWAT is a plug in for the MapWindow www mapwindow org GIS system To start a project e Start MapWindow i MapWindow GIS e Use the Plug ins menu and File Edit View Plug ins GIS Tools Shapefile Editor Watershed Delineation MWSWAT check the following Os TE FT O MWSWAT Scripts o Watershed Delineation Archive Project Tool o GIS Tools CSY to Shapefile Converter o Sh apefile Editor Document Launcher GIS Tools Google Geocoder GPS Tools Label Mover Measuring Tool Meems Tools MWAGNPS MWSWAT
20. on a soil name to edit the entire soil profile data or individual soil layer information 3 You can also add new soil into the database by clicking on the Add New button in the bottom of the Add and Edit User Soil dialog box 4 Click EXIT after completion of editing the database A prompt box will give you the option to save or ignore the changes made to soils database 50 Bv using a procedure similar to editing soils database the Database option under the Edit Input menu vou can edit or add information to the weather land cover plant growth fertilizer pesticide tillage and urban area databases User Soils Edit L IDIXI M Soil Component Parameters SNAM NLAYERS HYDGRP JAB RAM 2 D SOL ZMX mm ANION EXCL fraction SOL_CRK m3 m3 127 0 5 0 5 TEXTURE JSIL UWB M Soil Layer Parameters Soil Layer B el SOLZ mm SOL ED g cm3 SOL AWC mm mmj Add New E 25 jos SOL_CBN wt SOLK mm hr CLAY wt Cancel E cite ase 400 5 SILT wt SAND wt ROCK wt Save Edits 25 70 sa Delete SOL ALB fraction USLE_K SOLEC dS m oe aoe fo i 7 VA Figure 52 Edit soils database dialog Note e Moving the mouse pointer near an object text box radio button etc in any of the edit input dialog box will display a short description of the parameter contained in the object Step 2 Edit Point Discharge Inputs A P P Edit Point Source In
21. the sol extension and select the subbasin number landuse type soil type and slope level Then the OK button is activated Click OK a new dialog box will appear Figure 56 Click the Edit Values button all the boxes are activated and the user can revise the default values 55 3 The interface allows the user to save the revision of current sol file to other sol files Three options are available 1 extend edits to current HRU which is the default setting 2 extend edits to all HRUs or 3 extend edits to selected HRUs For the third option the user nee ds to specifv the subbasin number landuse tvpe soil tvpe and slope levels for the HRUs that the user wants to applv current sol file parameters Edit Soil Parameters Og x Soil Component Parameters SNAM NLAYERS HYDGRP SOL ZMX mm ANION_EXCL fraction JCROCKETT 5 jp 2032 0 5 SOL CRK m3 m3 TEXTURE fos Fs L SC SC CL SH C M Soil Layer Parameters Soil Layer fi si SOL Z mm SOL BD g cm3 SOL AWC mm mm SOL_CBN wt SOL K mmhr 203 2 1 55 0 12 0 73 31 CLAY wt SILT wt SAND wt ROCK wt SOL ALB fraction fi25 20 24 67 26 2 36 fo 06 USLE_K SOL_EC dS m 0 43 1 T il Select Edit Values Extend Parameter Edits elected HRUs T Extend ALL HRU Parameters Subbasins Land Use Sails WH Cancel Edits IV Extend Edits to Current HRU Save Edits Slope T Extend Edits to All HRUS Exit F Extend Edi
22. the locations of last 10 such folders are stored so you can revisit one using the pull down menu Navigate to Tutorial Example1 Scenarios It is also possible to make plots of observed data for comparison with model output To include such observed data use the Select observed data file box The locations of such files are stored with their scenarios folders and automatically made available when the scenarios folder is selected To add a new plot click Add plot This adds a row to the table and we now proceed to complete each entry in the row using the pull down menu above it There is only one run in Scenario so we sele ct it Default We did not have any ponds or reservoirs so only reach subbasin and hru are available as an output Source Select subbasin We have 15 subbasins in our watershed so the next menu offers us these numbers Select 2 The Hru entry is already marked This is because we chose an output determined just by subbasin number If we had chosen hru in the Source box we would now get a choice of the hrus in subbasin 2 You can change the Source box to hru and you will find the Hru box offers HRUs numbered 17 to 23 Change the Source box back to subbasin Open the final pull down menu Variable and you should get the view on the next page The variables available in the subbasin output file are available for selection Choose GW Q groundwater contribution to streamflow 74 SW
23. you Biles Cancel Edits have made all editing changes click Save Edits the OK button If you do not want to Exit copy the edited HRU generator data to other data sets click No on the prompt Fisure dialog MULL M Extend Parameter Edits Selected HRUs Subbasins Land Use Soils TE 59 Edit Hvdroloaic Response Units HRU dialoa T Extend ALL HRU Parameters IV Extend Edits to Current HAU T Extend Edits to All HRUS T Extend Edits to Selected HRUS 59 7 To edit the main channel input file click on the RTE Parameters Edit Channel Parameters L JOIXI rte in the Select Input file section of Edit CH W2 m CH_D m CH 52 m m CH L2 km CH_N2 Subbasin Inputs dialog box A new dialog box CH_K2 mm hr CH_EROD CH COV CH WDR m m ALPHA_BNK days A i A A l r 0 jo jo 16 80975 0 Figure 60 will appear with the existing main m Extend Parameter Edits Selected Subbasins A Edit Val channel data for the selected subbasin Click A A E Subbasine Cancel Edits Edit Values button to activate all the textboxes ee eae ee ave Its A y to all user s modification Also the user can eeteedidia to All Subasi Exit J Extend Edits to Selected Subbasins extend current edits to other basins with three types of options Edit Groundwater Parameters Figure 60 Edit Main channel input data dialog
24. 007 CHPST MIX m day 0 001 CHPST VOL m day 0 01 SEDPST_CONC mg m 3 SEDPST_REA 1 day 0 CHPST_KOC m 3 day CHPST_STL m day CHPST ASP 0 0 05 1 0 002 0 002 SEDPST_BRY m day SEDPST ACT m 0 03 Edit Values Extend Parameter Edits J Extend ALL SWQ Parameters Cancel Edits JV Extend Edits to Current Subbasin Save Edits J Extend Edits to All Subbasins Exit J Extend Edits to Selected Subbasins Selected Subbasins Subbasins Figure 66 Stream water quality input data editor 65 14 Go to the Watershed Data item under the Edit SWAT Input menu and select the General Data BSN option then a new dialog Figure 67 will appear This interface allows vou to modifv the parameters concerned with three major groups 1 Water Balance Surface Runoff and Reaches 2 Nutrients and Water Quality and 3 Basin wide Management After revision of the parameters click Save Edits Edit General Watershed Parameters L IDIXI Water Balance SFTMP C SMTMP C SMFMX mm C day SMFMN mm C day TIMP Poo 5S fg fg SNOCOVMX mm SNOSOCOV PET Method ESCO DO Oo i ps St Priestley T aylor bdl fs tt EPCO EVLAJ FFCB DEP_IMP fi fa jo 0 HRU Analysis Write Input Tables Edit SWAT Input SWAT Simulation f Surface Runoff Rainfall Runoff Method ICN CNCOEFF CN_FROZ Databases Daily Rain CN Daily Route T Soi Moistu
25. 2001 2001 ANNA Delete Selected From Lis Choose Parameter Current Sensitivity Params Parameter Alpha Bf Gw Delay 410 10 Gw Revap 0 036 0 036 RcehgDp 0 1 Revapmin 100 100 1000 1000 l 10 Delete All Select Lo Bound HRUs LU UpBound iMet E Parameter e Observed vs Simulated Sensitivity objmet dat Current Output Errors Objective Function OF Weight Sum of sqaured residuals 7 fi 0 Concentration Load Sensitivity zi fload v AddTolist Objective Fun Cone Load AutoCalNum Weight Delete Selected From List Cancel Write Input Files Run Sensitivity Analysis Figure 71 Dialog for sensitivity analysis of SWAT 71 SWATPIot and SWATGraph SWATPIlot is a tool for extracting data from SWAT output files either from a single run or from several runs SWATGraph is a tool for visualizing the output from SWA Plot SWAT output files HRU output hru contains information for each hydrological response unit in the watershed Subbasin output sub contains information for each subbasin in the watershed sums or weighted averages over the HRUs in the subbasin Main channel or Reach output rch contains information for each reach in the watershed Reaches are numbered as their corresponding subbasins While subbasin data is for the subbasin alone reach data includes inputs from upstream reaches as well Note that from a run generated by MWSWAT an outp
26. 7 20 456 122 665 0 000 0 000 0 000 1 12570E 02 29 200 0 000 66 881 20 915 117 550 0 000 0 164 0 000 1 46140E 02 29 200 0 300 69 167 18 895 121 321 0 000 0 210 0 000 1 27470E 02 29 200 0 300 69 172 19 063 116 651 0 000 0 380 0 000 1 17290E 02 29 200 0 300 69 166 19 425 128 432 0 000 0 340 0 000 1 10800E 01 29 200 0 000 65 202 45 642 0 000 0 000 0 000 0 000 1 18020E 02 29 200 0 300 67 578 29 562 222 456 0 000 0 232 0 000 2 35740E 02 45 700 0 000 105 603 38 472 125 686 0 000 0 713 0 000 2 30680E 02 45 700 0 000 105 608 39 218 125 837 0 000 0 377 0 000 2 20640E 02 45 700 0 000 105 600 39 016 125 772 0 000 0 521 0 000 2 13720E 02 45 700 0 000 105 600 37 834 125 584 0 000 1 081 0 000 2 16050E 02 45 700 0 000 104 020 38 972 126 945 0 000 0 674 0 000 2 44190E 02 45 700 0 000 107 049 37 878 126 618 0 000 0 924 0 000 2 11622E 03 45 700 0 000 104 009 39 004 127 201 0 000 0 421 0 000 2 61930E 02 45 700 0 000 107 046 32 238 124 661 0 000 1 890 0 000 For Help press F1 NUM 3 BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB BIGSUB pDo lmmhobnw H H e O H H b w H H in N ooooooooooo oo iooooeooo ao JaN BUNE 73 SWATPI0ot allows you to create plots of particular variables from one or more runs of SWAT To do this 1 Select the Scenarios folder of a project This is initiallv done using the folder button but
27. A IP lot Select Scenarios folder CAMW ProjectskT utorial E xamplel Scenarios v e Optional Select observed data file ATERBASE l ie Select what to plot Default w subbasin w 2 v v DI G PRECIPmm SNOMELT mm Add plot aa a Scenario Source Sub basin Hru PET mm 4 ETmm PERCmm SURGmm Copy plot Gw Omm MP LD mm Move up SYLDt ha ORGNkg ha Move down ORGPkg ha NSURGkg ha SOLPkg ha SEDPkg ha LAT Qimm Delete plot LATNO3ka h GWNO3kg ha 75 10 It is possible to add another plot by the same process but since successive plots are often similar you can copy the currently selected plot and then edit it to get the plot you want Mak e three more plots for subbasins 9 11 and 15 keeping the rest of each plot the same 11 You can change the order of the plots as you wish the order here will be reflected in the graph display later 12 When you are happy with the plots and their order click Plot 13 You are invited to choose a file in which to save the plot values Choose for example gwq in folder Scenarios This file is not always necessary but convenient if you want to do any further analysis on the data you have selected The file created is gwq csv a comma separated values file that can easily be imported into a database or spreadsheet 14 The companion tool SWATGraph immediately starts with gwq csv as input It shows the data plotted either as histograms or as line graphs Use t
28. HRUs is marked as done and you don t need to rerun it unless you want to change the soil or landuse files or set new slope limits or change parameters used to make the HRUs If you start the Create HRUs form you will see that the previous landuse and soil files are already loaded their tables are selected and the same slope bands if any are selected There is a new op tion Read from previous run and provided you do not wish to change the already selected data you click Read immediately This reads data stored from the previous run in the project database and is almost instantaneous Now you have the options to sel ect HRUs with your previous choices already suggested You can choose to leave them unchanged by clicking Create HRUs immediately or you can change them first SWAT Setup and Run is marked as done and you only need to rerun it if you want to change wea ther inputs change other settings on the form run SWAT run the SWAT editor or save arun If you start the SWAT Setup and Run form the weather sources and dates are set from the previous run and so are the other choices on this form You can change them or leave them as you wish before checking Write all files and then clicking Write files You can if you wish go straight to the Visualise form 48 SWAT Editor To start the SWAT Editor click on Edit files in the SWAT Setup and Run form The starts the editor with its initial parameters alreadv set e The project data
29. MWSWAT MapWindow Interface for Soil and Water Assessment Tool SWAT http www waterbase org http www brc tamus edu swat http www mapwindow org R Srinivasan r srinivasan tamu edu Blackland Research and Extension Center and Spatial Sciences Laboratory Texas Agricultural Experiment Station Texas A amp M University Chris George cwg iist unu edu Formerly United Nations University International Institute for Software Technology Macao WaterBase WaterBase is a project of the United Nations Universitv Its objective is to support Integrated Water Resources Management especi ally in developing countries by means of o Free open source software documentation data training materials http www waterbase org o A community of users and developers Google group http groups google com group waterbase MWSWAT is the first product of WaterBase SWATPlot SWATGraph is the second MWAGNFS is the third Introduction The Soil and Water Assessment Tool SWAT is a physically based continuous event hydrologic model developed to predict the impact of land management practices on water sediment and agricultural chemical yields in large complex watersheds with varying soils land use and management conditions over long periods of time For simulation a watershed is subdivided into a number of homogenous subbasins hydrologic response units or HRUs having unique soil and land use properties The input information for each subbasin
30. RW fo 2 a4 fi fo fo Urban Management Urban Land Cover Urban Simulation Method No Urban Use x z Irrigation Management M Plant Begin Growing Season Parameters Irrigation Source Subbasin FLOWMIN m 3 s ___DIVMAX mm 1074 m3 FLOWFR Schedule by Date i Heat Un Scheduling FTI Schedule By Heat Units Year of Rotation 1 015 No Irrigation si z f f f PLANT ID CURYR_MAT Heat Units to LALINIT r Tile Drain Management Pasture si jo 2046 65 fo DDRAIN mm TDRAIN hr GDRAIN hr BID JNIT HI TARG BID TARG CNOP fo fo jo fo jo jo jo Cancel OK Edit Values m Extend Parameter Edis _4_ pf Selected HRUs Edit Values m Extend Parameter Edits Selected HRUs J Extend ALL HRU General Parameters Subbasins Land Use Soils J Extend ALL HRU General Parameters Subbasins Land Use Soils Cancel Edits J Extend Management Operations EAEE J Extend Management Operations Save Edits M Extend Edits to Current HRU Slope Gara Erie M Extend Edits to Curent HRU J Extend Edits to All HRUS J Extend Edits to All HRUS E I Extend Edits to Selected HRUS I Extend Edits to Selected HRUS Figure 63 Edit management input file main dialog Creatas eera 62 11 To edit the soil chemical data click on the chm in the Select Input Table section of Edit Subbasin Inputs dialog box A new dialog box Figure 64 will appear displaying the Soil C
31. alitv Parameters 67 SWAT Simulation Setup SWAT simulation menu contains commands that setup and run SWAT simulation To build SWAT input files and run the simulation proceed as follows Step 1 Setup data and Run SWAT 1 Select the Run SWAT command under the SWAT Simulation menu It will open a dialog box Figure 69 that will allow you to set up the data for SWAT Set Up and Run SWAT model Simulation OF x Period of Simulation simulation Starting Date f 41 1977 Ending Date f 2 31 1978 mi I Simulate Forecast Period 2 Select the 1 1 1977 for the Starti ng date and M Rainfall Sub Daily Timestep Forecast Period Timestep Mi Minutes i n ee 12 31 1978 for the Starting Date i Number of Simulations M Rainfall Distribution Printout Settings eng ku an kiel Skewed normal C Daily Be Log oe you are using simu ate n 4 f 3 Monthly Print Pesticide Dutput Mle sanana C Yearly NVSKIP 0 F Print Soil Chem Output rainfall and temperature data both these fields will Exit Setup SWAT Run Swi Save SWAT Run be blank and you have to Figure 69 SWAT data setup and simulation dialog input the information manually 68 3 Choose Monthly option for Printout Frequency 4 Keep the rest at the default selections 5 After all the parameters have been set click the Setup SWAT Run button in the Run SWAT dialog box Figure 69 to build t
32. almost the entire globe Legend l ax First you need to identify the river basin or part of it that you are ER me H interested in WaterBase provides a collection of global basins 7 na_bas_I_r500m C maps to help you do this Figure 72 shows the original mask area for example 1 overlaid on the basins map for North America We will make the soil map from the global soils map for a larger area including the example 1 area and encompassing the North West end of the basin This involves 1 Loading the appropriate global soil map 2 Making a mask to clip the soil map The same mask would also be used to clip the elevation and landuse maps The mask will be a shapefile containing a single polygon 3 Reprojecting the clipped soil map to the projection used for Figure 72 Selecting a basin the project Global maps are in a lat long projection which is commonly used for large areas To do the analysis for SWAT we need an equal area projection or a close approximation to it Commonly people use a Universal Transverse Mercator UTM proje ction but for example 1 we are using the Albers Equal Area projection Preview Map S Legend Lat 34 462 Long 95 421 79 Make a mask Figure 73 shows the world data grids project after JB MapWindow GIS World Data Grids Belt we have also loaded the mask and the basins Fie Edt View Plugins GIS Tools map We can see I FAN 7 1 The soil map we want is na soil
33. animation We see that a results shapefile has Static data Animation variable been added to the MapWindow display but all the subbasins have the Choose variables Choose summary same colour aS we have not yet Totals defined how to colour it To do this we ORGPkg ha have to define what attribute to use All and what colours should represent fsubbasin ORGNka ha what values subbasin s ORGPka ha Figure 41 Ready to save 39 Right click on the results shp entry in the legend and select Properties in the menu to start the Legend Editor Figure 42 Click on Coloring Scheme and then on Ito start the Coloring Scheme Editor Figure 43 Select ORGNkg ha as the Field to color by and use the button to select Continuous Ramp as the scheme Legend Editor A 6 2 Comments E Legend Properties Expanded Legend False Legend Picture Cl none E Symbology Coloring Scheme INonel Display Name results shp Dynamic Visibility Disabled Display Name The name displayed in the legend Figure 42 Legend Editor Coloring Scheme Editor Field to color by v Number Format Automatic Shortest Text v waluefs Text Cancel C Preview Figure 43 Coloring Scheme Editor 40 The Choose colors form Figure 44 allows you to choose colours for the end points of the colour ramp and to select the number of breaks We will take the defaults
34. asin and creates the necessary precipitation and temperature files 2 Using the same file structures for the list of stations and the preci pitation and temperature files but using data prepared by the user from local sources 3 Similar to 2 but with database tables instead of files Methods 2 and 3 are preferable if we have local sources since global stations are often some way away and can have very different weather patterns from our target watershed Also the global data is currently only available for the years 2000 2005 Option 3 is perhaps a little more convenient than option 2 as all the data is concentrated into one Access file and that is what we will use for our example the data was stored in the Example1Data database which we imported into our project database earlier 31 E Microsoft Access The table Example1_weather is shown in Figure 33 It lists for each of 4 weather Eile stations an identifier latitude longitude and Ha aay elevation in metres Ee aS a DEK Edit View Insert Format Records Tools Window Help Ip GW 2 ah U as b DK TA a EE Exampleil weather Table Sele D station LATITUDE LONGITUDE ELEVATION gt 2902 32 867 95 733 151 MWSWAT will choose for each subbasin the weather station nearest to it 2 4483 32 817 95 917 133 PV Te DAR 3 4976 32 831 95 536 151 Se 4 8743 33 15 95 633
35. base Tutorial Example1 Example1 mdb e The SWAT parameter database SWAT2005 mdb e The folder containing the SWAT executable SWAT Editor Edit SWAT Input SWAT Simulation SWAT Project Geodatabase C MW _Projects T utorialkE xamplel Esamplel mdb FI SWAT Parameter Geodatabase IT apwindow Pluginsi M WSWAT Databases S WAT 2005 mdb FI SWAT Executable Folder C Program Files M ap indow Plugins MWw S WA TS Exit Figure 50 SWAT Editor 49 Edit SWAT Input The commands listed under the Edit SWAT Input menu bring up dialog boxes that allow you to alter default SWAT input data The Edit SWAT Input menu can be used to make input modifications during the model calibration process In this exercise you are not required to edit any input information Edit SWAT Databases Oy x Select Database to Edit User Soils Land Cover Plant Growth Fertilizers c ae ancel Pesticides However a general procedure is given to familiarize you with the SWAT input files and editing capabilities of the SWAT Editor Tillage Urban OK 4 Step 1 Editing Databases Figure 51 List of SWAT databases 1 Select the Databases entry in the Edit SWAT Input menu You will be given a list of options to choose the databases to be edited Figure 51 Step 1 1 Edit Soils database Figure 52 1 Select User Soils option and click OK 2 User Soils Edit dialog box with a list of abbreviated soil names appears Click
36. c case there can only be one variable and its value for each subbasin will be changed dynamically during the animation We can visualise the current Default run or saved ones provided they had the same subbasins i e we haven t changed the watershed delineation parameters 37 To start visualisation click Visualise in Visual Output the main MWSWAT form to start the l f Choose run Choose SWAT output Visual Output form Figure 40 Default l n l RA There are no saved runs so the only run A ATERBASE available the current Default is already selected Choose results shapefile C AMW_Projects Tutorial B angkok E xamplel Scenarios D efa Select subbasin as the output Static or animation Select Static data Static data Animation variable The upper Choose variables box allows you to select subbasin output variables and add them one at atime to the list below Find the variable ORGNkg ha and Add Find the variable ORGPkg ha and Add Select the first added variable in the table which will be the one displayed initially Figure 41 Figure 40 Visual Output form 38 Visual Qutput Choose run Choose SWAT output Choose Totals as the summarv Default subbasin Click Save A ATE R Bas E Choose results shapefile A message appears telling us to set a C MW_Projects Tutorial B angkok E xamplel Scenarios Defa colouring scheme for the results layer Click OK Static or
37. e Tools x External Data Database Tools Datasheet A ne FA I w EJ EO a z i T LI Records Filter Size to Switch Find i 7 Te f v 7 d Fit Form Windows 7 oe Sort amp Filter Window All Access Objects Tables Examplel_landuses Li Examplel soils Examplel usersoil Examplel weather pcp2902 pcp4463 pcp4976 pcp8743 tmp2902 tmp4483 tmp4976 EH EH EH EH EH BEE EH EH BEE EH EH tmp8743 Datasheet View EEd Examplel soils 7 SOILID SNAM Add New Field 1 TX047 2 TX236 3 TX357 4 TX619 5 TX620 6 TX633 Figure 6 Additional tables 10 We will add all these tables to the projec t database There is alreadv a table called usersoil in the project database it contains the standard MWSWAT soil data These American soils are new to MWSAT their names are not in the standard usersoil data We proceed as follows e Open our project database Tutorial Example1 Example1 mdb in Access e Use File gt Get External Data gt Import navigate to Tutorialimaps Example1Data mab click Import Figure 8 e Click Select All and then OK to import the tables File gt Exit the database FI Microsoft Access File Edit View Insert Tools Window Help Cah GAY BB o B B Boo Mig a DB amp Example Database Access 2000 file format WDOUTLE WDREACI WDREACI WDWATE WDWATE weather tmp TSType uncomb urban usersoil_EAWAG usersoil_FAO Example1_landuses Example1_
38. ee that the dem and mask have been added and our stream network has been calculated and added Figure 12 To complete the delineation we need to identify the main outlet point and we can do this either by using an existing point shapefile containing that one point or as we will do by creating such a shapefile 3 MapWindow GIS Example1 EE File Edit View Plug ins j GIS Tools Shapefile Editor Watershed Delineation MWSWAT Help EN Terrain Analysis WI Stream Reach Shapefile net iv I lM Focus Mask amask asc zH FIA Base DEM dem asc zH M Data Layers Preview Map i Legend Lat 33 031 Long 95 853 x 13 654 000 Y1 106 778 000 Meters Figure 12 Ready to identify the outlet 14 Zoom into the area where our network cro sses the mask make sure Use a Custom Outlets Inlets Layer is checked click Draw Outlets Inlets You are asked if you wish to create a new shapefile for storing the outlet answer Yes Navigate to Tutoriallmaps type the name outlet and Save A new form appears allowing you to choose to identify an outlet or an inlet or a reservoir select outlet reservoir We just want an outlet so we click close to where the stream crosses the mask and click Done Figure 13 MapWindow GIS Example1 TEx It is possible at the File Edit View Plug ins GIS Tools Shapefile Editor Watershed Delineation MWSWAT Help same time by changing i 0D s ES oR a EJ i i a sib sip LT
39. either format Arc only imports and exports the second format Creating a project e Click the MWSWAT entry in the toolbar to get the main MWSWAT form Figure 2 MWSWAT Select Project New Project Existing Project Main Steps Save in Tutorial maps E SM My Recent Documents ATERBASE Figure 2 Main MWSWAT form e Click New Project to get a form to give the File name Examplell project name and location Navigate to the My Network Save astyne MapWindow Project mp folder Tutorial type Example and Save Figure 3 e A warning comes up Figure 4 click OK Figure 3 Choosing the project name and location MWSWAT Before proceeding please make sure that 1 all your maps are in an equal area projection such as UTM 2 Watershed Delineation is among your selected plugins Figure 4 A warning Project structure The project structure is shown in Figure 5 It consists of a folder with the project name Examplef containing e The MapWindow project file Example1 mwprj This stores the state of Jimtiiiuuieit ia Lakoikiab ie dil Dok File Edit View Favorites Tools Help the MapWindow system so that we can restart with the same maps loaded Q P seah E Foes fill e The MWSWAT configuration file s O C MW ProjectsiTutoria Examplet Example1 cfg This stores options we set while running MWSWAT to help us File and Folder Tasks Scenarios a Make a
40. elie junctions or from a source to a junction or from a junction vas A OES Nath to the main outlet O Use Current View Extents for Mask Use Grid or Shapefile for Mask Select a Mask Grid or Polygon Shapefile or Use Extents The watershed delineation plug in of MapWindow ti Selected performs these functions in three steps Use Existing Intermediate Files 1 Setup and Preprocessing The base DEM file is NPA et MA already selected If we had a good map of the streams ia _ we could burn it in to improve accuracy We do have a Lise Biting intermadiaja Fins focusing mask so we check Use a Focusing Mask Custom Qutlet Inlet Definition and Delineation Completion navigate IE to Tutorial maps select amask asc and click Si re MARINA Be Open Then we click the first Run button 2 Network Delineation The number of reaches in eo diii our stream network is determined by a threshold the area Se required to form the beginning of a stream which we can set in terms of the number of cells of the DEM grid or by an area We will use an area of 1100 hectares so set the units to hectares the number beside it to 1100 and press Enter The number of cells will change to 1100 since our cells are 100 meters square Click the second Run button Select a Point Shapefile then Select or Draw Dutlets Inlets Figure 11 Watershed delineation form 13 3 Outlet Definition and Delineation Completion If we look at the MapWindow form we s
41. ercentage higher than this would mean trying to remove all HRUs from at least one subbasin We set the same percentage of 10 for soil and click Go and also for slope Figure 31 Then we complete the HRU selection by clicking Create HRUs The form closes and we are informed that we have selected 190 HRUs in the 15 subbasins Click OK In the pull down menu for Reports on the main MWSWAT form we see there is a new report HRUs T his is rather like the Basin report we saw earlier but reflects the new distributions of landuse soil and slope bands and also gives us details of the HRUs that we have selected 28 In subbasin 13 for example we see B HruLanduseSoilSlopeRepSwat txt Notepad ile Edi i l that landuses AGRL and WATR have EP disappeared as expected 18 HRUs area ha have been formed in this subbasin a R 1729 3 Landuse pen If we are not happy with the HRU 523 selection we can re open the Create 1396 HRUs form from the main MWSWAT form change our parameters and re a th select HRUs i FRSD TX620 1 5 16 FRSD TX620 0 6 1 5 FRSD TX620 0 0 6 FRSD TX3 57 1 5 16 FRSD TX3 57 0 6 1 5 FRSD TX357 0 0 6 PAST TX620 1 5 16 PAST TX620 0 6 1 5 PAST TX620 0 0 6 PAST TX3 57 1 5 16 PAST TX357 0 6 1 5 PAST TX357 0 0 6 RNGE TX620 1 5 16 RNGE TX620 0 6 1 5 RNGE TX620 0 0 6 RNGE TX3 57 1 5 16 RNGE TX3 57 0 6 1 5 RNGE TX357 0 0 6 ODODOOOoOooooooooDo H Figure 32 HRUs report fragment 29
42. form Set the grid to be clipped as na_soil_3 Use the drop down menu rather than the find file button as the grid is already loaded Clip Grid Select mymask as the polygon shapefile to clip PAL Clip Gri Select a Grid to Clip with atali na_soil_3 Do NOT check Clip to Extents Fast Sate i Select a Polygon Shapefile to Clip With Set the result file to where vou want to store the Po a i result and the name you want It will be a tif file C Clip to Extents Fast since the soil map is a tif file Itis a good idea to Fileto Save Results To keep for example Il in the name to remind you it C MW_Projects ArcS WATE xamplel maps soil_clip_Il tf is a lat long projected file Add Results to Map 0 shapes selected Click Select Shapes to select Figure 75 Clip Grid form polygon and click Done The Clip Grid form reports that 1 shape is selected so click OK 83 If we hide the map na soil 3 Figure 77 we see that the clipping polygon was too small some of the basin is outside the clipped soil map We must remove the clipped grid laver increase the size of the polvgon in mvmask using the Shapefile Editor and reclip Figure 76 The landuse and elevation DEM maps are clipped in the same wav Thev are much less coarse than the soil map so the new clipping polvgon will be fine for them MapWindow GIS World Data Grids EER MapWindow GIS World Data Grids Edit View Plug ins GIS Tools Sha
43. fragment 25 The Basin report shows the area and B LanduseSoilSlopeRepSwat txt Notepad percentage distribution of each File Edit Format View Help landuse soil and slope band for the area ha whole basin and for each subbasin subbasin 13 1729 3 Landuse Figure 27 Basin report fragment 26 HRU Selection Subdividing the watershed into areas having unique land use soil and slope combinations enables the model to reflect differences in evapotranspiration for various crops and soils Runoff is predicted separatelv for each HRU and routed to obtain the total runoff for the watershed This increases accuracv and gives a much better phvsical description of the water balance ESTIZ Dominant HRU v The user has a choice between making each subbasin into just one HRU or dividing it into multiple HRUs via a pull down menu on the Create HRUs form Figure 28 i ions i i illai i Figure 28 There are two single options Dominant tanduse soil slope will give to the singe HRU Sek a nae the landuse with the largest area of the subbasin s landuses and similarly for soil and choice slope Dominant HRU will choose the landuse soil and slope combination of the largest potential HRU in the subbasin HARU Threshold by 4rea Percentage If the multiple option is chosen it is also possible to reduce the number of HRUs by ay eliminating small ones and redistributing their area proportionately amo ngst the larger By Area
44. he 2d Bar 2d Line pull down menu plus Update Graph to switch between them The tool also shows the data that was input and calculates and displays correlation coefficients and Nash Sutcliffe efficiency coefficients for each pair of inputs 15 The graph can be copied into the clipboard and so input into tools like Paint to make pictures 76 D o jew a a wo oO N o Leli a F II af F KERGET k RASENE N N pia al k NI ASTET A t l U gesl N k sual kI ITEN o o Ww Lu N Month Default subbasin 15 Gw Bmm Default subbasin 11 Gw Bmm Default subbasin d GW Emm Default subbasin 2 G w_OQmm T1 Observed data Observed data for input into SWATPIot is essentially a comma separated value file with e Headings on the first line separated by commas e As many data values as there are headings on eac h succeeding line separated by commas e As many data lines as there are dates in the SWAT output If the first heading is DATE or date Date or the same 4 letters in any cases then the first column is ignored It is assumed and not checked that the d ates correspond to the dates in the SWAT output 78 Preparation of watershed files from global files WaterBase provides global files for landuse and soil data and helps you identify which tile you want from the SRTM set of File Edit View Plug ins GIS Tools Shapefile Editor elevation tiles that cover
45. he SWAT ClO COD PCP PCP and TMP TMP input files Once all input files are setup the Run SWAT button is activated in the bottom right of the Run SWAT dialog Click the button labeled Run SWAT This will run the SWAT executable file A message box will indicate the successful completion of SWAT run The button Save SWAT Run is activated now You need to save the current setting of the SWAT project to another folder If the user doesn t use this function the user interface will not allow the user to use the Sensitivity Analysis and Auto calibration and Uncertainty Analysis functions Click the Save SWAT Run button and input Demo as the name of current SWAT Run Click OK Then the interface will copy the files under Tutorial Example1 Scenarios Default to Save SWAT Run as ArcGWAT ES e Jl 2 SWAT Run Successfully Saved as Demo Figure 70 Dialog of saving SWAT run Tutorial Example1 Scenarios Demo And a dialog will appear to notify you that the current SWAT run has been saved as Demo Figure 70 69 Step 2 Sensitivitv Analvsis of SWAT After saving current SWAT run to another folder the buttons Sensitivitv Analvsis and Auto Calibration and Uncertaintv Analvsis are activated under the SWAT Simulation menu 1 Click Sensitivitv Analvsis button A dialog for sensitivitv analvsis of SWAT will appear Figure 71 In order to run sensitivitv analvsis of SWAT the name of SWAT run and the l
46. hemical data editor To modify the displayed data click the Edit Values button to activate all the textboxes After the modification of Soil Chemical Data the user also can extend the modification to other user specified HRUs Edit Soil Chemical Data L JOIXI M Soil Chemical Data Soil Layer SOL_NO3 mg kg SOL_ORGN mg kg SOL_LABP mg kg SOL_ORGP mg kg jo jo jo 0 M Soil Pesticide Data Pesticide Add Pesticide PLTPST kg ha SOLPST mg kg PSTENR jo jo jo Remove Pesticide 3 m Extend Parameter Edits Selected HRUs Edit Values T Extend ALL CHM Parameters Subbasins Land Use Soils Cancel Edits IV Extend Edits to Current HAU Save Edits Slope Extend Edits to All HRUS EM T Extend Edits to Selected HAUS Figure 64 Soil chemical input data editor 63 12 To edit pond data click on the pnd in the Select Input file section of Edit Subbasin Inputs dialog box A new dialog box Figure 65 will appear displaving the pond data editor To modifv the displaved data click the Edit Values button to activate all the textboxes After the modification of pond data the user also can extend the modification to other user specified Subbasins Edit Pond Wetland Parameters Ioj xi m Pond Parameters IPND1 month IPND2 month IFLOD1 month IFLOD2 month NDTARG days 1 1 jo jo 0 gt Pond Wetland Parameters Water Body Type Pond
47. new folder restart the project B Publish this Folder to re i the Web Source e The initial project database EB share this folder Ex ample 1 mdb Examplet cfg A CFG File e A subfolder Scenarios which will be used Other Places IKB to store SWAT outputs Tutorial e A subfolder Source which will be used to 3 My Documents i Shared D t store copies of our input maps and the a led iQ My Computer Example mwprj intermediate maps we generate My Network Places en Project File If you want to delete a project you just delete the project folder here Example7 Figure 5 Project structure Adding tables to the project database It is sometimes necessary to add extra tables to the project database and this is a good time to do it In the Tutorial maps folder you will find a small Access database Example1Data mdb with some tables we need to add to the project database The tables are e Example1_landuses which relates values integers from our landuse map to SWAT landuse codes e Example1_soils which relates values integers from our soil map to soil names e Example1_weather which contains information about the weather stations we will use e Example1_usersoil which contains data about our soils e Some tmpnnnn and pcpnnnn tables with temperature and precipitation data for our weather stations NEE ca Views a Home Create kl B 7 8 JI A View Clipboard Font Microsoft Access Tabl
48. nimation is in fact a series of snapshots of a changing file Only one variable is allowed and it may be a reach subbasin or if single HRUs were chosen an HRU variable In the Visual Output form select reach as the output and select Animation variable This allows you to choose a variable from output rch and we choose SEDCONCmg kg Click Save We have to confirm we are happy to overwrite the existing results shapefile Click Yes If we wanted to preserve it we could answer No change the name of the shapefile to something new and click Save again The MapWindow display is updated for the new variable Figure 47 with the colour scheme recalibrated To enable this the initial values for subbasins 1 and 2 are temporarily set to the minimum and maximum values of the variable for the whole basin If you want to change the colour scheme now is the time to do it 44 MapWindow GIS Example Sec Is MWSWAT Help Fl Results OM results shp SEDCONCmg kg Clo 600 J 600 1 2E 03 B 1 2 03 1 8E 03 E 1 8E 03 2 4E403 IBNI 2 4E403 3E 03 EM Terrain Analysis Y Weather stations Watershed Shapetile demw shp Y Stream Reach Shapefile net demnet shp Y Outletsiniets Shaperile outlet shp Y FullHRUs C Focus Mask amask asc WI Base DEM dem asc EH Data Layers OM landuse Gl RNGE Mi past Gi FRSD Mi WATR B acre i MDA RO No Data l E MI soil E Tx047 BI TX236 E 1x357
49. o a number of other file types used internally by MapWindow bmp shx mwleg mwsr MapWindow comes with a plug in GIS Tools that can perform a number of operations on grids and shapefiles such as reprojection changing grid formats clipping and merging To add a map grid or shapefile to MapWindow use View gt Add Layer To change the relative positions of layers drag the entry for a layer up or down the legend panel To see information about a layer right click its entry in the legend panel and select Properties To see the attributes of a shapefile right click its entry in the legend panel and sel ect View Attribute Table Editor Exchanging files between MapWindow and ESRI tools If you need to exchange files between MapWindow and ESRI tools like ArcView or ArcGIS then shapefiles may be exchanged immediately Grids need to be exchanged as ASCII grids which may be imported to or exported from Arc provided you have the Spatial Analyst extension To go from MapWindow to Arc you need to change the header of the ASCII grid using WordPad for example The grid needs to have square cells and in the header the first few lines of the asc file you must replace the two lines where n is a number DX n DY n by the single line cellsize n You can tell the cells are square by DX and DY the horizontal and vertical sizes of a cell having the sam e value n MapWindow outputs ASCII grids in the first format but inputs
50. ocation of subbasin needs to be specified 2 Click the Demo under the SWAT simulation select a subbasin to run analvsis on and check the appropriate Sensitivitv Parameters Click the Write Input Files button on the bottom of the dialog box A folder named Sensitivity will be created under th e folder Tutorial Example1 Scenarios Demo TxtInOut After writing the input files the Run Sensitivitv Analvsis button is activated Clicking this button executes the SWA 12005 xe file 70 lel ES Sensitivity Analysis Sensitivity Analysis i Sensitivity Analysis Output Analysis Location M Input Settings SWAT Simulation Number of Intervals within latin hypercube Choose Parameter fi 0 Parameter change for DAT Random seed number OrgP 0 05 2003 Noa Subbasin Observed data file name Current Output Parameters je sl IV Use observed data Parameter Sensitivity Parameters IV Add Flow Parameters V Add Sediment Parameters V Add Water Quality Parameters Lower Bound Upper Bound Choose Parameter Output Parameter Sensitivity responsmet dat Avg Thresh Cone Load L JDIXI Sensitivity Analysis Input Sensitivity Analysis Qutput Average Threshold Criteria Threshold Average si l Concentration Load Sensitivity sl Load si Add To List AutoCalNum Threshold Delete Selected From List Variation Method gt Add To List HRU Num fal 2001 2001 2001 2001 2001
51. onse units HRUs Each HRU is a particular combination of subbasin landuse soil and optionally slop e range We have identified our subbasins so the next step is to add landuse and soil information Our main form shows that Step 1 Delineate Watershed is Done Figure 15 We click Step 2 Create HRUs and we get a new form Create HRUs MWSWAT Select Project New Project Existing Project Main Steps Wa Done Delineate Watershed ATERBASE stp Figure 15 Ready to create HRUs 17 To select the Landuse Map we navigate to Tutorial maps select landuse asc and click Open Similarly the Soil Map is soil asc in the same folder They are copied to Sourcelcrop and Source soil folders and added as new lavers The landuse and soil maps are just grids of numbers We have to relate these numbers to landuse codes and soil names and it was for this that we previously added the tables Examplef landuses and Examplet soils to the project database We use the pull down menus to select the two tables The pull down menu Landuse Table offers us all tables in the database that contain the string landuse and similarly for the Soil Table Figure 17 This makes it easy to find the tables we want provided we gave them appropriate names earlier If at this point you realize you had forgotten to add the tables to the project database close the Create HRUs form add the tables to the database and start the form agai n from the main MWSWAT form
52. outputs E EE E Battle jil e are stored in the folder Tutorial Scenarios Default TxtInOut If you click Save run 955 anew one you will be offered the form shown in Figure 49 where runf has been typed into the lower box If some runs had been saved previously they would appear in the upper box so that you can avoid overwriting an older one or overwrite it according to the name you choose This will copy TxtInOut to make Tutorial Scenarios run1 TxtinOut unt If you forget to do this you can do it again when you next run the project as long as when you get to the SWAT Setup and Run form you click on Save run before Write files Note however that the Elevation Basin and HRUs reports Figure 49 Saving the run will belong to the new run rather than the old one The rest is easy e Close the SWAT Setup and Run form e Exit from the MWSWAT main form e File gt Exit from MapWindow 47 Rerunning the project If vou want to run the project again to change some of the settings a few things are different from the first run On the main MWSWAT form vou select Existing project and then navigate to the MapWindow project file Example1 mwpr in the project folder Tutorial Example1 Click Open Watershed delineation is marked as done and you don t need to rerun it unless you want to add or remove a mask or stream map to burn in change the subbasin threshold or change the inlets outlets or reservoirs Create
53. pefile Editor Plug ins GIS Tools Shapefile Editor oM Data Layers soil_clip_ltit H soil_clip_ltit Hg J mymask o 7 mymask o O na_soil_3 Ho O na_soil_3 zH amask_Reproj 4 r amask_Reproj H na bas Il 50 OI b na bas Il r500C EJ Preview E Legend E Preview S Legend Lat 33 833 Long 96 411 Lat 33 746 Long 96 356 Figure 77 Clipping polygon too small Figure 76 Clipping polygon OK Reproject the soil map We want to reproject soil clip Il tif to Albers Equal Area We use the GIS Tools plug in 1 Select GIS Tools gt Raster gt Reproject Choose Projection Grids A form on which to collect the grid files Please select the new arid projection appears and you may add as many as you wish We select soil_clip_ll tif and click OK i i Continental North America 2 We are invited to choose a projection We Name USA Contiguous Albers Equal Area Conic USGS choose the Category Projected Coordinate Systems the Group Continental North America and Name USA Contiguous Albers Equal Area Conic USGS See Figure 78 3 On completion you are asked if you want to open the map now There is usually no point as the current project is lat long The landuse and DEM are projected in the same way In fact you could reproject all three by selectin g all three at step 1 above The landuse and DEM take longer to reproject as they have more cells Category Projected Coordinate Systems Figure 78 Choosing projection
54. puts M fel x 1 Select the Point Source Discharges option 7 Select Point Source Data Type under the Edit SWAT Input menu Edit Point Constant zi Source Inputs dialog box Figure 53 with a list Pai Loadnas l i l l Flow m3 Sediment ton Organic N ka Organic P ka of subbasins containing point discharges will ooo p pp p appear Nitrate NO3 ka Ammonia NH3 kg Nitrite NO2 kg Mineral P ka L L L jo jo jo 0 2 Click on the subbasin number whose point CBOD kal Dissolved Oxygen ka Chlorophyll a ka Soluble Pesticide ka discharge database needs to be edited A te A yoy Sorbed Pesticide Persistent bacteria ess Persistent Bacteria Conservative Metal Point Discharges Data dialog box appears EE EE EE with the list of attributes of the point data The Conservative Metal 2 ka Conservative Metal 3 ka jo 0 dialog box allows the input of point source data in one of four formats constant daily loadings a a i Average Daily Daily Loading File gl average annual loadings average monthly loadings and daily loadings Cancel Edits Save Edits Exit 3 Choose a format by clicking the button next to the format to be used The default point source data format option is constant daily loadings If you select this format you will have the option of either inputting average daily flow m s sediment loading tons and organic N organic P NO3 mineral P loadings all in kg three conservative metals
55. re Meth 1 Inactive si pom aena Crack Flow SURLAG ISED_DET ADJ PKR TB_ADJ Inlet Discharges inactive si ja Triangular Dist 7 fo BEES Cae PRE SPCON SPEXP Subbasins Data fi fo 0001 fi General Data BSN Wat lity Data LWA Re Writa SWAT Input Files Reaches ae eae aN Channel Routing MSK_CO1 MSK_CO2 MSK_X Channel Degredalion Variable Storage si jo 3 5 fo 2 Inactive si Stream Water Quality TRNSRCH EVACH Routing Pesticide inactive si jo fi si Edit Values Cancel Edits Save Edits Exit Figure 67 General Watershed Parameters Editor 66 15 Go to the Watershed Data item under the Edit SWAT Input menu and select the Water Qualitv Data WWQ button then a new dialog Figure 68 will appear This interface allows you to modify the parameters concerned with Watershed Water Quality Simulation After revision of the parameters click Save Edits Edit Watershed Water Quality Parameters Iof x er oa HRU Analysis Y Write Input Tables Edit SWAT Input 7 SWAT Simulation Y eia EN EEN N A low day user value kai Nutrient si f jo 08 Databases Point Source Discharges alz AB ag aE IL ki joos fis m Pz fio Inlet Discharges ROERE MUMAX RHOQ TFACT Subbasins Data 2 Jo E f a7 l a General Data BSN LAMBDAD LAMBDA1 LAMBDAZ Water Quality Data WWO Re Write SWAT Input Files f z fi jo 03 fo 054 mi Edit Values Cancel Edits Save Edits Exit 4 Figure 68 Watershed Water Qu
56. s and slopes creates a new shapefile called FullHRUs and also creates a slope bands grid This immediatelv brings up a request to confirm that our project projection is suitable Figure 23 MWSWAT needs a projection that is at least approximatelv equal area and UTM is the most common such This project is in an Albers Equal Area projection and so is OK we click Yes MWSWAT Project projection proj aea lat_1 29 5 lat_2 45 5 lat_O 23 lon_O 96 x_0 0 y_0 0 ellps GR580 datum N4D83 units m no_defs does not seem to be a UTM projection Continue Figure 23 Projection check The shapefile FullHRUs shows us all the potential HRUs in our watershed To ex amine it zoom in to subbasin 13 use the right mouse button on the FullHRUs entry in the legend to get a menu allowing you to View Attribute Table Editor set Select mode in the MapWindow toolbar and click somewhere in subbasin 13 Figure 24 We see for example that there is an HRU in subbasin 13 with landuse FRSD soil TX620 and slope band 0 6 1 5 with a total area of 210 ha which is 12 1 of the subbasin The HRU is composed of many parts but the SWAT model will treat them all as if it were one area with these landuse soil and slope values draining directly into the reach for subbasin 13 22 3 MapWindow GIS Example1 z ae ools Se Editor Watershed Delineation MWSWAT Watershed Shapefile demw C Stream Reach Shapefile netfw Outle
57. s to Selected Subbasins you have made all editing changes click the OK button The Figure 58 Edit Subbasin Sub dialog interface will save all changes and return you to the Edit Subbasin Inputs box The user can select to 1 extend edits to current Subbasin which is the default setting 2 extend edits to all Subbasins or 3 extend edits to selected Subbasins For selecting multiple subbasins hold the Shift key when clicking the preferred subbasin numbers 58 6 To edit general HRU data click on the Edit HRU Parameters L JOIXI M HAU Parameters HRU_FR km2 km2 hru extension in the Select Input Table section of the Edit Subbasin Inputs dialog box Figure 59 A new LAT SED mg l 0 RSDIN Kgsha 0 dialog box will appear displaving the RIP_FR existing general HRU data for the i SLSUBBSN m HRU_SLP m m OV_N LAT TIME days 121 9512 fo 001 349931 0 15 jo SLSOIL m CANMX mm ESCO EPCO 0 0 jo jo ERORGN ERORGP POT_FR FLD_FR 0 0 jo jo selected subbasin To modifv data POT_TILE m3 s 0 activate a field bv positioning the cursor over the text box and clicking DEP IMP rom Once a cursor appears in the field M HRU Pothole Parameters Note an HAU is defined as a pothole HRU in the Subbasin edit form POT VOLX 1074 m3 POT VOL 1074 m3 0 0 POT_NSED mg l 0 POT_NOSL mg l 0 make the desired changes Once
58. ses Suppose for example we know that 50 of the landuse AGRL generic agriculture in this area is actually row crops AGRR Then we could use the Split Landuses form as illustrated in Figure 21 In this exercise we will not split any landuses Exempt Landuses EBR Landuse Threshold Exemptions Split Landuses Select New Landuse to Split AGRL w Add Landuse Sub landuse AGRL Delete AGAL Exempting landuses means Sub landuse Select landuse Exempt landuses marking them as not tobe removed n v URBN Delete Split Landuse when we come later to remove small HRUs For example Figure 20 shows the URBN urban landuse being exempted In this exercise we will not exempt any landuses Set bands for slope Slope bands 0 0 6 1 5 9999 Figure 19 Slope bands set Cox Select Split Landuse to Edit i Sub landuse Percent AGRL 50 AGRR 50 Cancel Edits Figure 20 Exempting a landuse Figure 21 Splitting a landuse 20 The tool discovers that our soils are not defined in the MWSWAT default usersoil table Figure 22 It finds a suitable table Examplef usersoil and asks us to confirm this is the one to use If we reject it any other suitable tables will be offered MWSWAT Use Example1_usersoil as usersoil table Figure 22 Selecting a usersoil table 21 The final stage in preparing the HRUs is to click Read This reads the grids for the subbasins landuses soil
59. si PND FRA PND_PSA PND_PVOL PND_ESA PND_EVOL jo jo jo jo jo PND VOL PND SED PND_NSED PND_K PSETLI 0 0 jo jo fi 0 PSETL2 NSETLI NSETL2 CHLA SECCI fi 0 55 55 fi fi PND_NO3 PND_SOLP PND_ORGN PND_ORGP 0 D jo 0 Edit Values M Extend Parameter Edits Selected Subbasins T Extend ALL SUB Parameters Subbasins Cancel Edits IV Extend Edits to Current Subbasin Save Edits T Extend Edits to All Subbasins Exit T Extend Edits to Selected Subbasins 4 Figure 65 Dialog to edit pond input data file 13 To edit stream water quality input data file click on th e swq in the Select Input Table section of Edit Subbasin Inputs dialog box A new dialog box Figure 66 will appear displaving the stream water qualitv input data editor To modifv the displaved data click the Edit Values button to activate all the textboxes After the modification of stream water qualitv input data the user also can extend the modification to other user specified Subbasins Edit Stream Water Qualitv Parameters L JDIXI M Nutrient Parameters RS1 m dap 1 RSB 1 day 25 RK4 mg m 2 day 2 BC3 1 dap 0 21 RS2 mg m 2 day 0 05 RS mg m 2 day 25 RKS 1 day 2 BC4 1 dap 0 35 RS3 mg m 2 day 0 5 RK1 1day 1 71 RK6 1 day 1 71 RS4 1 dav 0 05 RK2 1 day 50 BCI 1 day 0 55 RSS 1 day 0 05 RK3 1 day 0 36 BC2 1 day 11 m Pesticide Parameters CHPST_REA 1 dap 0
60. soils Example1_weather Cancel Select All Deselect All Options gt gt usersoil_orig Watershed Watershed Shape Index WDOUTLET wgn wus EJ EJ EJ EJ B EA EJ EA EA EJ EJ EJ E3 EJ EJ Figure 8 Importing extra tables into the project database 11 Watershed Delineation We are now readv to take the first step in running MWSWAT MWSWAT Our main form indicates that we should first Select Project Delineate Watershed Figure 9 Main Steps A new form appears inviting us to select the base digital Step 1 elevation map DEM so we click the folder button I Sh navigate to Tutorial maps select dem asc and click ATERBASE Open The form indicates that dem asc copied into the Source folder is selected Figure 10 and we click Process DEM This brings up the Automatic Watershed Delineation form Figure 11 Figure 9 Ready to delineate Watershed Delineate Watershed DEM Processing Select Base DEM alNExample1 Source dem as ATERBASE Figure 10 Ready to process DEM Automatic Watershed Delineation The purpose of watershed delineation is to identifv L Setup and Preprocessing e where the streams will run Elevation Units Base Elevation Data DEM Layer e which parts of the area will drain into which reaches Meters eg bore DEM deri asc of the stream C Burn in Existing Stream Polpline A reach of a stream is a portion between two stream Selecta Stream Polina Shap
61. taining the string weather We also EW navigate to the weather generator file ATERBASE TXKaufman wgn in folder Tutoriallmaps Weather Sources i Database tables Weather Stations Table E lel th Figure 35 Then click Done The tool in nn Local files calculates which weather station to use O Global f obal files for each subbasin and adds a shapefile Weather Generator File C M W_Projects Tutorial maps TXKaufman wan showing where these three that are actually used are located Figure 35 Choosing weather sources 33 Write SWAT Input Files The SWAT Setup and Run form SWAT Setup and Run now has the expected dates of Penod at similior Weather Sources the run taken from the pcp and es disis 1 w Janay WI 1977 31 w December w 1978 Choose tmp tables which should all a Month ae Day Aaah Year cover the same period It also Rainfall Runoff Routing Rainfall distribution Potential ET method offers a number of other options z Circo RA EN O Piiestley Taylor H all al d We will take the alreadv selected a a O Mixed exponential A oes A L argreaves defaults and check Write all files O Read in Figure 36 Crack Flow Channel water routing Channel dimensions method Write weather files f i Vari ti Write bsn file Then we click the Write files Not active Variable storage Not active biez O Active Muskingum Active Wite cio file button This takes a few
62. the subbasin number and click OK then a new dialog box will appear displaving the existing general subbasin data for the sele cted subbasin Figure 58 To modifv data activate all fields bv clicking Edit Values button For the elevation band parameters the user can choose ELEVB ELEVB FR and SNOEB in the combo box beside the Elevation Band then change the parameter values for each band Also the user can choose RFINC TMPINC RADINC HUMINC in the combo box aside of Weather Adjustment then change the parameter values for each month Once Edit Subbasin Parameters L IDIXI M Subbasin Parameters HRUTOT SUB KM km 2 SUB LAT degrees SUB ELEV m PLAPS mm km 6 13 9500000259839 33 089781 7303819 149 0 TLAPS C km SNO_SUB mm CH LI km CH 51 m m CHOW m 0 0 7 669896 3 520278E 05 6 270963 CH_K1 mm hr CH NI CO2 ppm FCST REG Pothole HAU 0 5 0 014 0 1 None M Elevation Bands Parameter 0 Band 1 Band 2 Band 3 Band 4 Band 5 jo fo 0 jo 0 Band 6 Band 7 Band 8 Band 9 Band 10 Pp Pp b b bo Weather Adjustments Parameter i 0 Jan Feb Mar Apr May Jun jo fo 0 jo 0 jo Jul Aug Sep Oct Nov Dec fo fo fo fo fo p Edit Values Extend Parameter Edits _ _ f Selected Subbasins T Extend ALL SUB Parameters Subbasins Cancel Edits Save Edits era EEEA E IV Extend Edits to Current Subbasin J Extend Edits to All Subbasins Exit T Extend Edit
63. ts to Selected HAUS Figure 56 Edit soil input file dialog 56 4 To edit the weather generator data click on the wgn extension For the wgn file you only need to sel ect the subbasin number and then the OK button will be activated Click OK a new dialog box Figure 57 will appear which will allow you to modify the data in wgn file Similar to sol file the interface also a llows the user to extend the current edits to other subbasins The user can select to 1 extend edits to current Subbasin which is the default setting 2 extend edits to all Subbasins or 3 extend edits to selected Subbasins Edit Weather Generator Data L IDIXI m Weather Station Parameters Station Name WLATITUDE deg WLONGITUDE deg WELEV m RAIN_YRS yrs TXPARIS 33 65 35 58 fi 73 8 fi 0 M Monthly Weather Parameters Parameter si 0 Jan Feb Mar Apr May Jun 11 68 13 94 18 82 23 62 27 61 32 32 Jul Aug Sep Oct Nov Dec 34 87 34 38 jai 39 25 74 fi 8 38 fi 3 08 he es a c ser Edit Values Extend Parameter Edits Selected Subbasins J Extend ALL SUB Parameters Subbasins Cancel Edits IV Extend Edits to Current Subbasin I Extend Edits to All Subbasins Exit F Extend Edits to Selected Subbasins Save Edits Ea Ba aa Figure 57 Edit weather generator input file main dialog 57 5 To edit general subbasin data click on the sub extension Select
64. tsAnlets ShapeFile outl M FullHRUs C Focus Mask amask asc W IN V Base DEM dem asc zH IT AM Data Layers Ji E aM landuse i TH a Gi RNGE CI JIN Gi past mit H 7 El Attribute Table Editor Edit 27806 1 of 436 Selected C MW_Projects T utoriaKExamplel SourceFulHRUs shp SHAPE ID SUBBASIN LANDUSE SOIL SLOPE BAN AREA ha View Selection Tools SUBBASIN A La 37 113 0 6 1 5 378 13 FRSD TX620 1 5 16 65 0 lann ana sett TM TAIC mar aan Figure 24 Examining FullHRUs 23 If we look at the main MWSWAT form we see that two reports are now available Elevation and Basin Figure 25 Each can by opened by selecting it in the pull down menu Seles MWSWAT Select Project New Project Main Steps Done Delineate Watershed Existing Project SMe Create HRUs ATERDASE i Reports Elevation Figure 25 Elevation and Basin reports available 24 The Elevation report shows the area and percentage distribution of elevation for the whole watershed and for each subbasin Elevation report for the watershed Tuesday November 25 2008 10 42 57 AM Minimum elevation 121 Maximum elevation 195 Mean elevation 154 193527697861 Standard deviation 12 7299570656565 Elevation area up to elevation area of watershed 121 0 08 0 08 122 0 14 0 06 123 0 18 0 05 124 0 25 0 07 125 0 34 0 09 Figure 26 Elevation report
65. ut variable of the reach with the maximum subbasin number is an output for the whole watershed Impoundment or Water outout wtr contains information for ponds wetlands and depressional impounded areas in the HRUs Reservoir output rsv contains information for reservoirs Each of these files is written as a fixed format spreadsheet and can be quite easily imported into tools like Excel See next page for an example It is possible to extract data for particular subbasins or HRUs in Excel by selecting cutting and pasting but it is a slightly tedious process SWATPlot is designed to ease this task 12 H output sub WordPad File Edit View Insert Format Help Cel 446 raeo B SWAT Sept OS VERSIONZO05 General Input Output section ifile cioj Wednesday November 26 2008 10 23 05 AM MapWindow SWAT interface MON AREAkKMZ PRECIPmm SNOMELTrren PE Treen E Treen S Wren PERCrmm SURQMM GU Oren 1 35740E 02 29 200 0 000 66 891 21 304 119 387 0 000 0 039 0 000 1 30680E 02 29 200 0 000 66 901 21 409 119 855 0 000 0 000 0 000 1 20640E 02 29 200 0 000 66 886 21 379 119 734 0 000 0 012 0 000 1 13720E 02 29 200 0 000 66 8687 21 216 119 003 0 000 0 081 0 000 1 16050E 02 29 200 0 300 67 478 20 134 121 060 0 000 0 020 0 000 1 44190E 02 29 200 0 300 69 178 20 172 120 039 0 000 0 082 0 000 1 11622E 03 29 200 0 300 67 463 20 137 121 103 0 000 0 000 0 000 1 61930E 02 29 200 0 300 69 173 16 636 113 369 0 000 0 227 0 000 1 83970E 02 29 200 0 300 69 17
66. z write fig file l A tream water quality Write gw files seconds longer if we are using processes Wita hau flee global data O Not active Write mat files Active Write pnd files Write ppi files 3 Write res files Printout frequency Write tte files ATERBASE O Daip a ml fie Monthly Write sub files Write swq files O Yeaty Write wgn files Write wus files NYSKIP o Write wg file Fn Wa Figure 36 Ready to write files 34 If as in this example our watershed seems to be in the USA we are Heat Unit Estimation Seles invited to estimate the heat units for plant growth from a special program This program currently only works within the USA so for the rest of the world this option is not offered and the default value of 1800 is used Within the USA we have the choice of using the Sh estimation program which we do just click Done or setting a global ATERBASE default value which can be 1800 or any number we choose to enter in the box See Figure 37 Heat Units In the US only it is possible to estimate plant growth heat units from climate data Please choose between estimation and using a default value The heat unit estimates or default value will appear in the which you may change first if you wish management mgt files generated by MWSWAT for input into SWAT We can change the values later with the SWAT Editor Estimate from climate data US only Use default value of 1800 The

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