| 年份 | 洪峰流量(m3/s) | 7天洪量(亿m3) | 15天洪量(亿m3) | ||||||
| 调度前 | 调度后 | 削减率 | 调度前 | 调度后 | 削减率 | 调度前 | 调度后 | 削减率 | |
| 1954 | 99,810 | 80,000 | 19.85% | 459 | 361 | 21.38% | 934 | 786 | 15.92% |
| 1968 | 102,666 | 80,000 | 22.08% | 481 | 427 | 11.24% | 911 | 842 | 7.54% |
| 1981 | 103,472 | 80,000 | 22.68% | 555 | 503 | 9.46% | 926 | 874 | 5.67% |
| 1982 | 103,186 | 80,000 | 22.47% | 507 | 450 | 11.28% | 924 | 862 | 6.74% |
| 1998 | 94,430 | 80,000 | 15.28% | 416 | 367 | 11.64% | 910 | 829 | 8.90% |
| 2020 | 107,348 | 80,000 | 25.48% | 571 | 492 | 13.79% | 987 | 904 | 8.41% |