| 用水级别 | 权重系数α | ||
| 模型B1 | 模型B2 | 模型B3 | |
| 1_SH | 6 | 100 | 100 |
| 0_SH | 5 | 100 | 100 |
| 1_GY | 4 | 100 | 20 |
| 0_GY | 3 | 100 | 10 |
| 1_NY | 2 | 10 | 2 |
| 0_NY | 1 | 1 | 1 |