Instream Flow Demand File - Daily (*.ifd)
The daily instream flow demand file contains instream flow demands or a daily pattern for each day of the simulation period. Data should be
entered in the order of the structure file (*.ifs). 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 instream flow station variable cifridy is set to 3 the instream flow station variable cifrid
is used to indicate daily data controls and any monthly data provided in the annual instream flow demand file (*.ifa) is ignored. When the diversion
station variable cifridy is set to any ID including its own (cifrid) StateMod uses daily data as a pattern to estimate daily data from monthly 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. 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 | cifridx | Daily station ID |
| 2-3 | flowrx(1-31) | Demand (cfs) or pattern (unitless) for days 1-31, etc. |
Repeat for the number of instream flows stations
Repeat for each year of the simulation