| 洪水频率P | 50% | 33.3% | 20% | 10% | 5% | 3.33% | 2% | 1% | 0.5% |
| 洪峰流量(m3/s) | 802 | 1110 | 1360 | 1840 | 2330 | 2630 | 3000 | 3520 | 4050 |
| 调洪后最高水位(m) | 1161.27 | 1167.90 | 1181.16 | 1186.09 | 1189.17 | 1191.69 | 1195.20 | 1201.19 | 1207.00 |
| 最大下泄流量(m3/s) | 511 | 543 | 741 | 1148 | 1580 | 2079 | 2229 | 2384 | 2524 |
| 削峰流量(m3/s) | 291 | 567 | 619 | 692 | 750 | 551 | 771 | 1136 | 1526 |
| 削峰比例 | 36.3% | 51.1% | 45.5% | 37.6% | 32.2% | 21.0% | 25.7% | 32.3% | 37.7% |