Base Flow Data (*.rib)
Base flow data is used by the baseflow module to estimate base flows at river nodes that do not have hisoric records using the following formula:
Where:
\(FlowX\) = Flow at intermediate node to be estimated
\(FlowB\) = Base flow station(s)
\(FlowG\) = Gain flow station(s)
\(pf\) = Proration factor for gain term
\(coefB\) = Base flow coefficient
\(coefG\) = Gain flow coefficient
The first term \((FlowB(1) \times coefB(1) + FlowB(2) \times coefB(2)+ ....)\) typically represents upstream gaged flows. The second term
\(pf \times (FlowG(1) \times coefG(1) + FlowG(2) \times coefG(2)+ ....)\) typically represents the gain between gages. This file is read by subroutine VIRGEN.
| Row-data | Variable | Description |
|---|---|---|
| Base Station Data | ||
| 1 | Format (a12, 8x, i8, 10(f8.3, 1x, a12) | |
| 1-1 | FlowN | Intermediate river node ID |
| 1-2 | mbase | Number of base stations to follow |
| 1-3 | coefB(1) | Base flow coefficient |
| 1-4 | FlowB(1) | Base station ID |
Repeat for the number of gaged flows (mbase) |
||
| Proration Data | ||
| 2 | Format (12x, f8.2, i8, 10(f8.3, 1x, a12) | |
| 2-1 | pf | Proration factor for gain term |
| 2-2 | nbase | Number of gain stations to follow |
| 2-3 | coefG(1) | Base flow coefficient |
| 2-4 | FlowG(1) | Base station ID |
Repeat for the number of gain stations flows (nbase)
Repeat for the number of intermediate nodes where base flows are to be estimated