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 |