Runoff coefficients for 5 to 10 year storms
Runoff coefficients for 5- to 10-year storms (Source: Haan et al., 1994)
Link to this table
| Land use description | Runoff coefficient (C) |
|---|---|
| Forest | |
| <align="right">< 5% slope</align> | 0.30 |
| 5 to 10% slope | 0.35 |
| > 10% slope | 0.50 |
| Open space | |
| < 2% slope | 0.05 to 0.10 |
| 2 to 7% slope | 0.10 to 0.15 |
| > 7% slope | 0.15 to 0.20 |
| Industrial | 0.50 to 0.90 |
| Residential | |
| Multi-family | 0.40 to 0.75 |
| Single family | 0.30 to 0.50 |
| Impervious areas | 0.70 to 0.95 |
| Row crops1 | |
| < 5% slope | 0.50 |
| 5 to 10% slope | 0.60 |
| > 10% slope | 0.72 |
| Pasture | |
| N 5% slope | 0.30 |
| 5 to 10% slope | 0.36 |
| > 10% slope | 0.42 |
1For clay and silt loam soils.