A.5 Depression Storage
| Surface Type | Depth of Depression Storage |
| Impervious surfaces | 0.05-0.10 inches |
| Lawns | 0.10 - 0.20 inches |
| Pasture | 0.20 inches |
| Forest litter | 0.30 inches |
Source: ASCE, (1992). Design & Construction of Urban Stormwater Management Systems, New York, NY.