| 重现期(年) | 入库洪峰(m3/s) | 出库洪峰(m3/s) | 削峰量(m3/s) |
| 1000 | 16,750 | 11,290 | 5460 |
| 900 | 16,570 | 11,160 | 5410 |
| 800 | 16,360 | 11,020 | 5340 |
| 700 | 16,130 | 10,850 | 5280 |
| 600 | 15,860 | 10,660 | 5200 |
| 500 | 15,540 | 10,440 | 5100 |
| 400 | 15,150 | 10,160 | 4990 |
| 300 | 14,650 | 9800 | 4850 |
| 200 | 13,930 | 9300 | 4630 |
| 100 | 12,690 | 8530 | 4160 |
| 50 | 11,420 | 7930 | 3490 |