Irrigation Water Requirement File - Daily (*.ddx)
The daily consumptive water requirement (*.ddx) file contains the CU requirement for direct diversion and
well only structures for each day of the simulation period. It is only used when the control file (*.ctl)
variable efficiency control (ieffmax) = 1. To simplify the preparation of daily data, StateMod allows the
user to provide daily data or a pattern to be used with monthly data. When the diversion station variable
cdividy is set to the diversion station variable cdivid daily data controls and any monthly data provided
in the monthly consumptive water requirement file (*.ddc) is ignored. When the river station variable cdividy
is set to any ID other than its own direct flow station variable cdivid. StateMod uses daily data as a pattern
to estimate daily data using the same approach described under daily streamflow data (Section 4.36).
This file is only required if the model is operated in a daily mode with variable efficiency (control
file itsfile = 1 or 10). Data can be entered with stations entered in any order. This file is read by subroutine
DAYDATA.
| Row-data | Variable | Description |
|---|---|---|
| Control Data | ||
| 1 | Format (i5,1x,i4,5x,i5,1x,i4,a5,a5) | |
| 1-1 | ibm | Beginning month of data (e.g. 1 = Jan) |
| 1-2 | iby | Beginning year of data (e.g. 1975) |
| 1-3 | iem | Ending month of data |
| 1-4 | iey | Ending year of data |
| 1-5 | cunit | Units of data |
| (' ACFT' or 'CFS') | ||
| 1-6 | cyr | Year type |
| 'CYR' = calendar year (1-12) | ||
| 'WYR' = water year (10-9) | ||
| 'IYR' = irrigation year (11-12) | ||
| Time Series Data | ||
| 2 | Format (i4, i4, 1x, a12, 31f8.2, f8.0) | |
| 2-1 | iy | Year |
| 2-2 | im | Month |
| 2-2 | cresidx | Daily station ID |
| 2-3 | targex2(1-31) | Consumptive Water Requirement(cfs) or pattern for days 1-31 |
Repeat for the number of stations numdiv
Repeat for each year of the simulation