| 流量级 | 时段 | 新江口分流量(m3/s) | 新江口分流比(%) | 沙道观分流量(m3/s) | 沙道观分流比(%) | 松滋口分流量(m3/s) | 松滋口分流比(%) |
| 10,000 m3/s | 1956~1966 | 496 | 5.0 | 176 | 1.8 | 672 | 6.8 |
| 1967~1972 | 530 | 5.3 | 72.5 | 0.7 | 602 | 6 | |
| 1973~1980 | 457 | 4.6 | 42.3 | 0.4 | 500 | 5 | |
| 1981~2002 | 365 | 3.6 | 4.5 | 0.0 | 369 | 3.6 | |
| 2003~2020 | 270 | 2.7 | 0.3 | 0.0 | 270 | 2.7 | |
| 20,000 m3/s | 1956~1966 | 1649 | 8.2 | 826 | 4.1 | 2475 | 12.4 |
| 1967~1972 | 1781 | 8.9 | 734 | 3.7 | 2514 | 12.6 | |
| 1973~1980 | 1739 | 8.7 | 538 | 2.7 | 2277 | 11.4 | |
| 1981~2002 | 1577 | 7.9 | 356 | 1.8 | 1933 | 9.7 | |
| 2003~2020 | 1608 | 8.0 | 362 | 1.8 | 1970 | 9.8 | |
| 30,000 m3/s | 1956~1966 | 2431 | 8.1 | 1335 | 4.5 | 3766 | 12.6 |
| 1967~1972 | 2779 | 9.3 | 1296 | 4.3 | 4075 | 13.6 | |
| 1973~1980 | 2569 | 8.6 | 998 | 3.3 | 3567 | 11.9 | |
| 1981~2002 | 2469 | 8.2 | 782 | 2.6 | 3251 | 10.8 | |
| 2003~2020 | 2626 | 8.8 | 823 | 2.7 | 3449 | 11.5 | |
| 40,000 m3/s | 1956~1966 | 3280 | 8.2 | 1975 | 4.9 | 5255 | 13.1 |
| 1967~1972 | 3688 | 9.2 | 1932 | 4.8 | 5620 | 14.0 | |
| 1973~1980 | 3707 | 9.3 | 1653 | 4.1 | 5360 | 13.4 | |
| 1981~2002 | 3614 | 9.0 | 1359 | 3.4 | 4972 | 12.4 | |
| 2003~2020 | 3779 | 9.4 | 1303 | 3.3 | 5082 | 12.7 |