Reservoir Target File - Monthly (*.tar or *.tam)
The reservoir target file contains monthly targets for a reservoir's minimum and maximum contents. Data should be entered in the order of the structure (*.res) file. Positive maximum contents are end of month targets. Negative values are forecasted inflows. When forecasted inflows are provided the monthly target is estimated as follows:
Where:
\(~\text{Target} (im)\) is the reservoir target.
\(~\text{Current Storage} (im)\) is the total reservoir storage in month im.
\(~\text{Forecast} (im)\) is the total inflow for the remaining forecast period. Note for a linear forecast this term is often set to -1.
\(~\text{End Target}\) is the target at the end of the forecast period.
\(~\text{Months Remaining}\) is the total of all months remaining to be forecasted in a year.
For example, if the forecast data for April, May, June, July is 1,000 AF, -1, -1, and 700 AF and the Current Storage in April = 1000 AF, then the Target in May is: 1000 - (1000 - 1 -700)/3 = 900.
This file is read by subroutine MDAINP.
| 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, 1x, a12, 12f8.0, 10x, f8.2) | |
| 2-1 | iyr | Year |
| 2-2 | cistat | Reservoir station ID |
| 2-3 | conmin(1-12,1) | Minimum reservoir targets (AF) for months 1-12 |
| Time Series Data | ||
| 3-1 | iyr | Year |
| 3-2 | xista2 | Reservoir station ID |
| 3-3 | targetx(1-12,1) | Positive values equal the maximum reservoir targets (AF) by month. Negative values equal the forecasted inflow for future months |
Repeat for the number of stations numres
Repeat for each year of the simulation