| Anticipated Well Yield in gpm |
Nominal Size of Pump Bowls in inches |
Optimum Size of Well Casing in inches |
| Less than 100 | 4 | 6 ID |
| 75 to 175 | 5 | 8 ID |
| 150 to 350 | 6 | 10 ID |
| 300 to 700 | 8 | 12 ID |
| 500 to 1000 | 10 | 14 OD |
| 800 to 1800 | 12 | 16 OD |
| 1200 to 3000 | 14 | 20 OD |
| 2000 to 3800 | 16 | 24 OD |
| 3000 to 6000 | 20 | 30 OD |