Drainage Radius Examples
Drainage radius can be calculated as either the radius of a circle inscribed within a square or as the radius of a circle that has an equivalent area of the square.
| Drainage Radius, re | ||
|---|---|---|
| Square Area (Acres) | Inscribed Radius (ft) | Equivalent Radius (ft) |
| 10 | 330 | 372 |
| 20 | 467 | 527 |
| 40 | 660 | 745 |
| 80 | 933 | 1053 |
| 160 | 1320 | 1489 |
| 320 | 1867 | 2106 |
| 640 | 2640 | 2979 |
| 1320 | 3791 | 4278 |