Duration of infiltration period, t = (Volume of runoff to be infiltrated (cf) × 12 in/ft3)/(Infiltration area (sf)) × Recharge rate (in/hr)
| Basin | infiltration volume (cf) | Basin Surface Area (sf) | Recharge Rate (in/hr) | t (hr) |
|---|---|---|---|---|
| Surface #1 | 34901 | 4231 | 3.1 | 31.9 |
| Surface #2 | 18586 | 2628 | 1.05 | 80.8 |
| Subsurface (TYP) | 3080 | 533 | 3.25 | 21.3 |