Chapter 3: Input data: file.cio
Contents
1. CHAPTER 3 SWAT INPUT FILE CIO 73 3 5 DATABASE FILES Variable name PLANTDB TILLDB PESTDB FERTDB URBANDB Definition Name of land cover plant growth database file crop dat This file contains growth parameters for the different land covers This file is reviewed in Chapter 14 Required Name of tillage database file till dat This file contains mixing efficiencies for different tillage implements This file is reviewed in Chapter 15 Required Name of pesticide database file pest dat This file contains parameters governing movement and degradation of pesticides This file is reviewed in Chapter 16 Required Name of fertilizer manure database file fert dat This file contains nutrient content data for fertilizers This file is reviewed in Chapter 17 Required Name of urban land type database file urban dat This file contains data required to model build up wash off in urban areas This file is reviewed in Chapter 18 Required 74 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 3 6 SPECIAL PROJECTS Variable name ISPROJ ICLB CALFILE Definition Special project flag SWAT includes sections of code specific to particular projects This variable flags the code used in the particular simulation There are two options 0 nota special project Repeat simulation test variable initialization A user will set this variable to something other than2. an equilibration period becomes more important as the simulation period of interest shortens For 30 year simulations an equilibrium period is optional For a simulation covering 5 years or less an equilibrium period is recommended An equilibration period of one year is usually adequate to get the hydrologic cycle fully operational 76 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name NYSKIP cont ILOG IPRP IPRS Definition NYSKIP allows the user to exclude data generated during the equilibration period from output summaries In addition to not writing data to the output files annual averages are not computed for the skipped years Averages for the entire simulation period will also exclude data from the skipped years The default value for NYSKIP is O Required Streamflow print code This variable allows the user to take the logio of the flow prior to printing streamflow values to the rch file There are two options 0 print streamflow in rch file I print log of streamflow in rch file In large basins for example the Mississippi River basin streamflow values printed to the rch file may exceed the range allowed by the file format statements This variable will eliminate print errors caused by very large values This variable should be set to 0 unless the output files have symbols instead of numbers this happens if the numbers are too big to fit in the allotted spaces Requi
3. chanvel out watrdep out Code for printing snowband out file 0 do not print snowband out file print snowband out file 82 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name Definition continued from previous page IMGT Code for printing output mgt file 0 do not print output mgt 1 print output mgt IWTR Code for printing output wtr and output pot files 0 do not print files print files ICALEN Code for writing calendar or julian day to daily outputs of output rch output sub and output hru files 0 print Julian day 1 print calendar day mm dd yyyy The format of file cio is Variable name Line Position Format F90 Format Comment lines 1 2 space 1 80 character a80 TITLE 3 5 space 1 80 character a80 Comment line 6 space 1 80 character a80 FIGFILE 7 space 1 13 character al3 NBYR 8 none integer free IYR 9 none integer free IDAF 10 none integer free IDAL 11 none integer free Comment line 12 space 1 80 character a80 IGEN 13 none integer free PCPSIM 14 none integer free IDT 15 none integer free IDIST 16 none integer free REXP 17 none real free NRGAGE 18 none integer free NRTOT 19 none integer free NRGFIL 20 none integer free TMPSIM 21 none integer free NTGAGE 22 none integer free NTTOT 23 none integer free NTGFIL 24 none integer free CHAPTER 3 SWAT INPUT FILE CIO 83 Variable name Line Position Format F90 Format SLRSIM 25 none integer free NSTOT 26 none integer free R
4. transported with water out of reach metric tons SEDCONC Concentration of sediment in reach mg L ORGN IN Organic nitrogen transported with water into reach kg N ORGN OUT Organic nitrogen transported with water out of reach kg N ORGP IN Organic phosphorus transported with water into reach kg P 11 ORGP OUT Organic phosphorus transported with water out of reach kg P 12 NO3 IN Nitrate transported with water into reach kg N 13 NO3 OUT Nitrate transported with water out of reach kg N 14 NH4 IN Ammonium transported with water into reach kg N 15 NH4 OUT Ammonium transported with water out of reach kg N 16 NO2 IN Nitrite transported with water into reach kg N 17 NO2 OUT Nitrite transported with water out of reach kg N 18 MINP IN Mineral phosphorus transported with water into reach kg P 19 MINP OUT Mineral phosphorus transported with water out of reach kg P 20 CHLA IN Chlorophyll a transported with water into reach kg 21 CHLA OUT Chlorophyll a transported with water out of reach kg 22 IN Carbonaceous biochemical oxygen demand transported into reach kg O5 23 CBOD OUT Carbonaceous biochemical oxygen demand transported out of reach kg O5 24 DISOX IN Dissolved oxygen transported into reach kg 25 DISOX OUT Dissolved oxygen transported out of reach kg 26 SOLPST IN Soluble pesticide transported with water into reach mg a i 27 SOLPST_OUT Soluble pesticide transp
5. 4 69 none integer free IPDVAS 15 69 none integer free IPDVAS 16 69 none integer free IPDVAS 17 69 none integer free IPDVAS 18 69 none integer free IPDVAS 19 69 none integer free IPDVAS 20 69 none integer free Comment line 70 space 1 80 character a80 IPDHRU 1 71 none integer free IPDHRU 2 71 none integer free IPDHRU 3 71 none integer free IPDHRU 4 71 none integer free IPDHRU 5 71 none integer free IPDHRU 6 71 none integer free IPDHRU 7 71 none integer free IPDHRU 8 71 none integer free IPDHRU 9 71 none integer free IPDHRU 10 71 none integer free IPDHRU 11 71 none integer free IPDHRU 12 71 none integer free IPDHRU 13 71 none integer free IPDHRU 14 71 none integer free CHAPTER 3 SWAT INPUT FILE CIO 87 Variable name Line Position Format F90 Format IPDHRU 15 71 none integer free IPDHRU 16 71 none integer free IPDHRU 17 71 none integer free IPDHRU 18 71 none integer free IPDHRU 19 71 none integer free IPDHRU 20 71 none integer free COMMENT LINE 72 space 1 80 character a80 ATMOFILE 73 space 1 80 character a80 IPHR 74 none integer free ISTO 75 none integer free ISOL 76 none integer free I SUBW 77 none integer free SEPTDB 78 space 1 80 character a80 IA B 79 none integer free IHUMUS 80 none integer free ITEMP 81 none integer free ISNOW 82 none integer free IMGT 83 none integer free IWTR 84 none integer free ICALEN 85 none integer free 88 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012
6. 5 variables may be chosen in customized output Optional The codes for the output variables are PRECIP Average total precipitation on subbasin mm H gt 0 SNOMELT Snow melt mm H5O PET Potential evapotranspiration mm H gt 0 ET Actual evapotranspiration mm H5O SW Soil water content mm H gt 0 PERC Amount of water percolating out of root zone mm H20 SURQ Surface runoff mm H5O GW Q Groundwater discharge into reach mm H20 WYLD Net water yield to reach mm H20 SYLD Sediment yield metric tons ha ORGN Organic N released into reach kg ha ORGP Organic P released into reach kg ha NSURQ Nitrate released into reach kg ha SOLP Soluble P released into reach kg ha SEDP Mineral P attached to sediment released into reach kg ha Variable name IPDVAS CHAPTER 3 SWAT INPUT FILE CIO 79 Definition continued from previous page Output variables printed to the output hru file up to 20 variables may be chosen in customized output Optional The codes for the output variables are pi Wd AR 15 16 17 19 20 21 22 23 24 25 26 27 29 30 31 32 PRECIP Total precipitation on HRU mm H20 SNOFALL Precipitation falling as snow sleet or freezing rain mm H50 SNOMELT Amount of snow or ice melting mm H5O IRR Amount of irrigation water applied to HRU mm H5O PET Potential evapotran
7. 65 none integer free IPDVAR 10 65 none integer free IPDVAR I 1 65 none integer free IPDVAR 12 65 none integer free IPDVAR 13 65 none integer free IPDVAR 14 65 none integer free IPDVAR 15 65 none integer free IPDVAR 16 65 none integer free IPDVAR 17 65 none integer free IPDVAR 18 65 none integer free IPDVAR 19 65 none integer free IPDVAR 20 65 none integer free Comment line 66 space 1 80 character a80 IPDVAB 1 67 none integer free IPDVAB 2 67 none integer free IPDVAB 3 67 none integer free IPDVAB 4 67 none integer free IPDVAB 5 67 none integer free IPDVAB 6 67 none integer free IPDVAB 7 67 none integer free IPDVAB 8 67 none integer free IPDVAB 9 67 none integer free IPDVAB 10 67 none integer free IPDVAB 11 67 none integer free IPDVAB 12 67 none integer free IPDVAB 13 67 none integer free IPDVAB 14 67 none integer free IPDVAB 15 67 none integer free 86 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name Line Position Format F90 Format Comment line 68 space 1 80 character a80 IPDVAS 1 69 none integer free IPDVAS 2 69 none integer free IPDVAS 3 69 none integer free IPDVAS 4 69 none integer free IPDVAS 5 69 none integer free IPDVAS 6 69 none integer free IPDVAS 7 69 none integer free IPDVAS 8 69 none integer free IPDVAS 9 69 none integer free IPDVAS 10 69 none integer free IPDVAS 11 69 none integer free IPDVAS 12 69 none integer free IPDVAS 13 69 none integer free IPDVAS 1
8. CHAPTER 3 SWAT INPUT DATA FILE CIO File management is performed with the master watershed file file cio The master watershed file contains information related to modeling options climate inputs databases and output specifications The master watershed file can be divided into several sections brief description of the variables in the master watershed file follows They are grouped by section and listed in the order they appear within the file 63 64 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 3 1 TITLE SECTION Variable name TITLE Definition Three lines of file cio are reserved for a description of the simulation run The description may take up to 80 spaces per line The title given in file cio is printed to every output file Optional 3 2 GENERAL INFORMATION Variable name FIGFILE NBYR IYR IDAF WATERSHED CONFIGURATION Definition Name of watershed configuration file fig Contains the commands to add and route loadings through the watershed This file is reviewed in Chapter 2 Required Number of calendar years simulated The number of years simulated in a SWAT run is unlimited If a simulation is begun on August 1 of the year 1995 and ends July 30 of the year 1997 the model will be simulating 3 calendar years 1995 1996 and 1997 If a forecast period is simulated NBYR should include the forecast period as well as the period of normal simulation Requir
9. HSIM 27 none integer free NHTOT 28 none integer free WNDSIM 29 none integer free NWTOT 30 none integer free FCSTYR 31 none integer free FCSTDAY 32 none integer free FCSTCYCLES 33 none integer free COMMENT LINE 34 space 1 80 character a80 RFILE 1 35 space 1 13 character 313 RFILE 2 35 space 14 26 character 313 RFILE 3 35 space 27 39 character al3 RFILE 4 35 space 40 52 character al3 RFILE 5 35 space 53 65 character 313 RFILE 6 35 space 66 78 character 313 RFILE 7 36 space 1 13 character 313 RFILE 8 36 space 14 26 character 313 RFILE 9 36 space 27 39 character 313 RFILE 10 36 space 40 52 character 313 RFILE 11 36 space 53 65 character 313 RFILE 12 36 space 66 78 character 13 RFILE 13 37 space 1 13 character 13 RFILE 14 37 space 14 26 character 13 RFILE 15 37 space 27 39 character al3 RFILE 16 37 space 40 52 character al3 RFILE 17 37 space 53 65 character al3 RFILE 18 37 space 66 78 character 313 COMMENT LINE 38 space 1 80 character a80 TFILE 1 39 space 1 13 character 313 TFILE 2 39 space 14 26 character 13 3 39 27 39 character 313 TFILE 4 39 space 40 52 character 313 TFILE 5 39 space 53 65 character 313 TFILE 6 39 space 66 78 character 313 TFILE 7 40 space 1 13 character 313 84 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name Line Position Format F90 Format TFILE 8 40 space 14 26 character 313 TFILE 9 40 space 27 39 character 313 TFILE 10 40 space 40 52 charac
10. UT FILE CIO 81 Definition continued from previous page Numbers of HRUs whose data will be printed to the HRU output files up to 20 HRUs may be specified in customized output If all IPDHRU values are set to zero the model will print output data for all HRUs in the watershed Atmospheric deposition filename Code for printing hourly output file hourq dat 0 no print 1 print file Code for printing soil storage values by soil layer soilst out 0 no print print file Code for printing phosphorus nitrogen in soil profile output sol 0 no print print file We define headwaters as subbasins where the streams originate and do not have any incoming flow For sediment the MUSLE equation estimates the amount of sediment reaching the subbasin outlet Routing sediment through the main channel may double account for the delivery that is implicit in MUSLE Thus the user may opt not to route sediment through the headwater channels Code for routing headwaters 0 do not route 1 route Septic database filename septwq dat Optional Code for binary output of files rch sub hru files only 0 do not print binary files print binary files Code for output file for humus 0 do not print watqual out file 1 print watqual out Code for channel velocity and water depth output files input code affects both files 0 do not print chanvel out watrdep out I print
11. ed Beginning year of simulation for example 1980 The value entered for this variable is not important unless measured data e g weather is used in the run When measured data is used the model uses IYR to locate the beginning year within the data file Required Beginning Julian day of simulation With this variable SWAT is able to begin a simulation at any time of the year If the variable is left blank or set to zero the model starts the simulation on January 1 Required CHAPTER 3 SWAT INPUT FILE CIO Variable name Definition IDAL Ending Julian day of simulation With this variable SWAT will end the simulation on the date specified If the variable is left blank or set to zero the model ends the simulation on December 31 If a forecast period is simulated IDAL should be set to the last day of the forecast period Required 3 3 CLIMATE Variable name IGEN Definition Random generator seed code A set of random numbers is needed by SWAT to generate weather data SWAT has a set of default random numbers embedded in the code To use the default random numbers the user should set IGN 0 This is the default value for IGN In some situations a user may wish to vary the weather sequence between runs One method to do this is to set IGN to a different number every time the model is run This code will activate a random number generator which will replace the default set of ra
12. ed only if forecast data is being used for a portion of the simulation The forecast period should be simulated a minimum of 20 times to obtain a representative distribution of possible weather scenarios given the predicted probabilities Name of measured precipitation input file 1 pcp This file is reviewed in Chapter 6 Required only if measured precipitation data are used Name of measured precipitation input file 2 pcp Optional Name of measured precipitation input file 3 pcp Optional 70 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name RFILE 4 RFILE 5 RFILE 6 RFILE 7 RFILE 8 RFILE 9 RFILE 10 RFILE 11 RFILE 12 RFILE 13 RFILE 14 RFILE 15 RFILE 16 RFILE 17 RFILE 18 Definition Name of measured precipitation input file 4 pcp Optional Name of measured precipitation input file 5 pep Optional Name of measured precipitation input file 46 pcp Optional Name of measured precipitation input file 7 pcp Optional Name of measured precipitation input file 8 pcp Optional Name of measured precipitation input file 9 pcp Optional Name of measured precipitation input file 10 pep Optional Name of measured precipitation input file 11 pep Optional Name of measured precipitation input file 12 pep Optional Name of measured precipitati
13. lows users to use recorded data or import values generated with an independent weather generator The default or recommended option is 2 allow SWAT to generate relative humidity values Required Number of relative humidity records within the hmd file A maximum of 300 relative humidity records may be placed in the hmd file Required if measured relative humidity data are used Variable name WNDSIM NWTOT FCSTYR FCSTDAY FCSTCYCLES RFILE 1 RFILE 2 RFILE 3 CHAPTER 3 SWAT INPUT FILE CIO 69 Definition Wind speed input code This variable identifies the method the model will use to process wind speed data There are two options measured data read for each subbasin 2 wind speed generated for each subbasin Option 1 allows users to use recorded data or import values generated with an independent weather generator The default or recommended option is 2 allow SWAT to generate wind speed values Required Number of wind speed records within the wnd file A maximum of 300 wind speed records may be placed in the wnd file Required if measured wind speed data are used Year that forecast period begins Required only if forecast data is being used for a portion of the simulation Day that forecast period begins Julian date Required only if forecast data is being used for a portion of the simulation Number of times that the forecast period is simulated Requir
14. ndom numbers with a new set The value to which IGN is set determines the number of times the random number generator is cycled before the simulation begins The seeds produced by the random number generator are then utilized by the weather generator instead of the default values Measured weather data read into the model is not affected by this variable However if the measured data contains missing values the weather generator is activated to produce data to replace the missing values The data produced to replace missing values will be affected by this variable Required 66 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name PCPSIM IDT IDIST REXP NRGAGE NRTOT Definition Rainfall input code This variable identifies the method the model will use to process rainfall data There are two options measured data read for each subbasin 2 rainfall generated for each subbasin If observed rainfall data is available for a watershed the user should read in the measured data Required Time step used to report measured rainfall data minutes Required if IEVENT 2 or 3 see Chapter 4 for a description of IEVENT One of the following should be chosen 1 min 2 min 3 min 4 min 5 min 6 min 10 min 12 min 15 min 20 min 30 min Rainfall distribution code used to generate daily precipitation values There are two options 0 skewed distribution I mixed exponential distribution Req
15. on input file 13 pep Optional Name of measured precipitation input file 14 pep Optional Name of measured precipitation input file 15 pep Optional Name of measured precipitation input file 16 pep Optional Name of measured precipitation input file 17 pep Optional Name of measured precipitation input file 18 pep Optional Variable name TFILE 1 TFILEQ TFILE 3 TFILE 4 TFILE 5 TFILE 6 TFILE 7 TFILE 8 TFILE 9 TFILE 10 TFILE 11 TFILE 12 TFILE 13 TFILE 14 TFILE 15 CHAPTER 3 SWAT INPUT FILE CIO Definition Name of measured temperature input file 1 tmp This file is reviewed in Chapter 7 Required if measured temperature data are used 71 Name of measured temperature input file 2 tmp Optional Name of measured temperature input file 43 tmp Optional Name of measured temperature input file 44 tmp Optional Name of measured temperature input file 45 tmp Optional Name of measured temperature input file 46 tmp Optional Name of measured temperature input file 47 tmp Optional Name of measured temperature input file 48 tmp Optional Name of measured temperature input file 49 tmp Optional Name of measured temperature input file 410 tmp Optional Name of measured temperature input file 11 tmp Opti
16. onal Name of measured temperature input file 12 tmp Optional Name of measured temperature input file 13 tmp Optional Name of measured temperature input file 14 tmp Optional Name of measured temperature input file 415 tmp Optional 72 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name TFILE 16 TFILE 17 TFILE 18 SLRFILE RHFILE WNDFILE FCSTFILE Definition Name of measured temperature input file 16 tmp Optional Name of measured temperature input file 17 tmp Optional Name of measured temperature input file 418 tmp Optional Name of measured solar radiation input file slr This file is reviewed in Chapter 8 Required if measured solar radiation data are used Name of measured relative humidity input file hmd This file is reviewed in Chapter 10 Required if measured relative humidity data are used Name of measured wind speed input file wnd This file is reviewed in Chapter 9 Required if measured wind speed data are used Name of weather forecast input file cst This file is reviewed in Chapter 13 Required if a forecast period is simulated 3 4 WATERSHED MODELING OPTIONS Variable name BSNFILE Definition Name of basin input file bsn Contains inputs for physical processes modeled or defined at the watershed level This file is reviewed in Chapter 4 Required
17. ool kg P ha L AP Transformation of P from labile to active mineral pool kg P ha A SP Transformation of P from active mineral to stable mineral pool kg P ha DNIT Amount of N removed from soil by denitrification kg N ha NUP Nitrogen uptake by plants kg N ha PUP Phosphorus uptake by plants kg P ha ORGN Organic N contributed by HRU to reach kg N ha ORGP Organic P contributed by HRU to reach kg P ha SEDP Mineral P attached to sediment contributed by HRU to reach kg P ha NSURQ NO contributed by HRU in surface runoff to reach kg N ha NLATQ NO contributed by HRU in lateral flow to reach kg N ha NO3L leached below the soil profile kg N ha NO3GW NO contributed by HRU in groundwater flow to reach kg N ha SOLP Soluble phosphorus contributed by HRU in surface runoff to reach kg P ha P GW Soluble phosphorus contributed by HRU in groundwater flow to reach kg P ha W STRS Number of water stress days TMP STRS Number of temperature stress days N STRS Number of nitrogen stress days P STRS Number of phosphorus stress days BIOM Total plant biomass metric tons ha LAI Leaf area index YLD Harvested yield metric tons ha BACTP Persistent bacteria in surface runoff cfu m BACTLP Number of less persistent bacteria in surface runoff cfu m Variable name IPDHRU ATMOFILE IPHR ISTO ISOL I SUBW SEPTDB IA B IHUMUS ITEMP ISNOW CHAPTER 3 SWAT INP
18. orted with water out of reach mg a i gt 78 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name IPDVAB Definition continued from previous page 28 29 30 31 32 33 34 35 36 37 38 39 SORPST_IN Pesticide sorbed to sediment transported with water into reach mg a i SORPST OUT Pesticide sorbed to sediment transported with water out of reach mg a i REACTPST Loss of pesticide from water by reaction mg a i VOLPST Loss of pesticide from water by volatilization mg a i SETTLPST Transfer of pesticide from water to river bed sediment by settling mg a i RESUSP PST Transfer of pesticide from river bed sediment to water by resuspension mg a i DIFFUSEPST Transfer of pesticide from water to river bed sediment by diffusion mg a i REACBEDPST Loss of pesticide from river bed sediment by reaction mg a i BURYPST Loss of pesticide from river bed sediment by burial mg a i BED_PST Pesticide in river bed sediment mg a i BACTP_OUT Number of persistent bacteria transported out of reach cfu 100 mL BACTLP_OUT Number of less persistent bacteria transported out of reach cfu 100 mL CMETAL 1 Conservative metal 1 transported out of reach kg CMETAL 2 Conservative metal 2 transported out of reach kg CMETAL 3 Conservative metal 3 transported out of reach kg Output variables printed to the output sub file up to 1
19. red Print code for output pst file There are two options 0 do not print pesticide output output pst will be empty print pesticide output Required Print code for soil chemical output files There are two options do not print final soil chemical information output chm will be empty I print final soil chemical information for every HRU in chm format Not operational future feature CHAPTER 3 SWAT INPUT FILE CIO 77 For long runs the output files can get so large that the user may have difficulty in opening the files to look at output The user has the option of customizing the output printed to the output files Lines of file cio are used to specify the variables to be printed to the reach output file output rch the subbasin output file output sub and the HRU output file output hru If these lines contain only zeros the model will print all the output variables to the file Variable name Definition IPDVAR Output variables printed to the output rch file up to 20 variables may be chosen in customized output Optional The codes for the output variables are FLOW IN Average daily streamflow into reach m s FLOW OUT Average daily streamflow out of reach m s EVAP Average daily loss of water from reach by evaporation m s TLOSS Average daily loss of water from reach by transmission m s SED IN Sediment transported with water into reach metric tons SED OUT Sediment
20. spiration mm H5O ET Amount of water removed by evapotranspiration mm H gt 0 SW INIT Soil water content at beginning of time period mm H5O SW END Soil water content at end of time period mm H gt 0 PERC Amount of water percolating out of the root zone mm H20 GW RCHG Amount of water entering both aquifers mm H20 DA RCHG Amount of water entering deep aquifer from root zone mm H gt 0 REVAP Water in shallow aquifer returning to root zone mm H gt 0 SA IRR Amount of water removed from shallow aquifer for irrigation mm H gt 0 DA IRR Amount of water removed from deep aquifer for irrigation mm H gt 0 SA ST Amount of water in shallow aquifer storage at end of time period mm H gt 0 DA ST Amount of water in deep aquifer storage at end of time period mm H gt 0 SURQ GEN Surface runoff generated during time step mm H gt 0 SURQ CNT Surface runoff contribution to reach mm H gt 0 TLOSS Amount of water removed from tributary channels by transmission mm H gt 0 LATQ Lateral flow contribution to reach mm H gt 0 GW Q Groundwater discharge into reach mm H20 WYLD Net amount of water contributed by the HRU to the reach mm H gt 0 DAILYCN Average curve number for time period TMP AV Average air temperature for time period TMP MX Average of daily maximum air temperatures for time period TMP MN Average of daily minimum air temperatures for time period SOL TMP Average soil temperat
21. ter 313 TFILE 11 40 space 53 65 character 313 TFILE 12 40 space 66 78 character 313 TFILE 13 41 space 1 13 character 13 TFILE 14 41 space 14 26 character 13 TFILE 15 41 space 27 39 character 313 TFILE 16 41 space 40 52 character al3 TFILE 17 41 space 53 65 character al3 TFILE 18 41 space 66 78 character al3 SLRFILE 42 space 1 13 character al3 RHFILE 43 space 1 13 character al3 WNDFILE 44 space 1 13 character al3 FCSTFILE 45 space 1 13 character al3 Comment line 46 space 1 80 character a80 BSNFILE 47 space 1 13 character al3 Comment line 48 space 1 80 character a80 PLANTDB 49 space 1 13 character al3 TILLDB 50 space 1 13 character al3 PESTDB 51 space 1 13 character al3 FERTDB 52 space 1 13 character al3 URBANDB 53 space 1 13 character al3 Comment line 54 space 1 80 character a80 ISPROJ 55 none integer free ICLB 56 none integer free CALFILE 57 space 1 13 character al3 Comment line 58 space 1 80 character a80 IPRINT 59 none integer free NYSKIP 60 none integer free ILOG 61 none integer free IPRP 62 none integer free IPRS 63 none integer free Comment line 64 space 1 80 character a80 CHAPTER 3 SWAT INPUT FILE CIO 85 Variable name Line Position Format F90 Format IPDVAR 1 65 none integer free IPDVAR 2 65 none integer free IPDVAR 3 65 none integer free IPDVAR 4 65 none integer free IPDVAR 5 65 none integer free IPDVAR 6 65 none integer free IPDVAR 7 65 none integer free IPDVAR 8 65 none integer free IPDVAR 9
22. uired Value of exponent for mixed exponential rainfall distribution A value for REXP is needed only if IDIST 1 The model will set REXP 1 3 if no value is entered Number of precipitation gage pcp files used in the simulation Up to 18 files may be used Required if measured precipitation data are used Total number of precipitation gage records used in the simulation If each pcp file contains only one precipitation gage record NRTOT NRGAGE Otherwise NRTOT gt NRGAGE A maximum of 5400 precipitation gage records may be used in a simulation Required if measured precipitation data are used Variable name NRGFIL TMPSIM NTGAGE NTTOT NTGFIL CHAPTER 3 SWAT INPUT FILE CIO 67 Definition Number of precipitation gage records within each pcp file A maximum of 300 precipitation gage records may be placed in each pcp file Required if measured precipitation data are used Temperature input code This variable identifies the method the model will use to process temperature data There are two options measured date read for each subbasin 2 daily max min generated for each subbasin If observed temperature data is available for the watershed the user should read in the measured data Required Number of temperature gage tmp files used in the simulation Up to 18 files may be used Required if measured temperature data are used Total number of temperat
23. ure gage records used in the simulation If each tmp file contains only one temperature gage record NTTOT NTGAGE Otherwise NTTOT gt NTGAGE A maximum of 2700 temperature gage records may be used in a simulation Required if measured temperature data are used Number of temperature gage records within each tmp file A maximum of 150 temperature gage records may be placed in each tmp file Required if measured temperature data are used 68 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name SLRSIM NSTOT RHSIM NHTOT Definition Solar radiation input code This variable identifies the method the model will use to process solar radiation data There are two options measured data read for each subbasin 2 solar radiation generated for each subbasin Option 1 allows users to use recorded data or import values generated with an independent weather generator The default or recommended option is 2 allow SWAT to generate solar radiation values Required Number of solar radiation records within the slr file A maximum of 300 solar radiation records may be placed in the slr file Required if measured solar radiation data are used Relative humidity input code This variable identifies the method the model will use to process relative humidity data There are two options measured data read for each subbasin 2 relative humidity generated for each subbasin Option 1 al
24. ure in time period SOLAR Average daily solar radiation for time period MJ m SYLD Amount of sediment contributed by the HRU to the reach metric tons ha USLE USLE soil loss metric tons ha N APP Amount of N fertilizer applied in regular fertilizer operation kg N ha P APP Amount of P fertilizer applied in regular fertilizer operation kg P ha 80 SWAT INPUT OUTPUT FILE DOCUMENTATION VERSION 2012 Variable name Definition continued from previous page 38 39 41 42 43 55 57 58 59 NAUTO Amount of N fertilizer applied automatically kg N ha PAUTO Amount of P fertilizer applied automatically kg P ha NGRZ Nitrogen applied to HRU in grazing operation during time step kg N ha PGRZ Phosphorus applied to HRU in grazing operation during time step kg P ha CFERTN Nitrogen applied to HRU in continuous fertilizer operation during time step kg N ha CFERTP Phosphorus applied to HRU in continuous fertilizer operation during time step kg P ha NRAIN Nitrate added in rainfall kg N ha NFIX Amount of N fixed by legumes kg N ha F MN Transformation of N from fresh organic to mineral pool kg N ha A MN Transformation of N from active organic to mineral pool kg N ha A SN Transformation of N from active organic to stable organic pool kg N ha F MP Transformation of P from fresh organic to mineral solution pool kg P ha AO LP Transformation of P from organic to labile p
25. zero only if the SWAT programmers have told him to do so Required Automated method flag This variable defines the automated method used in a SWAT simulation 0 no automated method performed I sensitivity analysis 2 uncertainty analysis autocalibration 3 sensitivity and uncertainty analysis autocalibration This variable should be set to a value other than 0 only after an initial manual calibration has been performed Optional Name of file containing auto calibration parameters Required only if ICLB is set to a value other than 0 This file is reviewed in the SWAT User s Manual CHAPTER 3 SWAT INPUT FILE CIO 75 3 7 OUTPUT INFORMATION Variable name IPRINT NYSKIP Definition Print code This variable governs the frequency that model results are printed to output files There are three options 0 Monthly Daily 2 Annually If you choose to print results on a daily basis the number of years simulated should be limited and or the variables printed to the output file should be restricted If these precautions are not taken the output files will be too large to view Required Number of years to not print output The options are O print output for all years of the simulation I print output after the first year of simulation 2 print output after the second year of simulation nbyr no output will be printed Some simulations will need a warm up or equilibration period The use of
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