Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Sep 02 2026 at 7:50 AM PDT |
| Prob | Sep* | Oct | Nov | Dec | Jan | Feb |
| 10% | 13.0 | 42.5 | 95.8 | 270.8 | 281.3 | 322.7 |
| 25% | 9.9 | 15.8 | 61.0 | 147.5 | 178.6 | 208.1 |
| 50% | 8.5 | 7.7 | 19.8 | 52.3 | 109.5 | 126.9 |
| 75% | 7.8 | 5.7 | 8.4 | 22.3 | 53.0 | 70.1 |
| 90% | 7.4 | 5.3 | 5.7 | 10.4 | 29.2 | 52.6 |
|
| Mean | 7.4 | 16.6 | 42.1 | 84.9 | 121.9 | 134.6 |
| %Mean | 114.9 | 46.4 | 47.0 | 61.6 | 89.8 | 94.3 |
| Prob | Mar | Apr | May | Jun | Jul | Aug |
| 10% | 397.7 | 291.0 | 433.9 | 307.3 | 98.2 | 22.4 |
| 25% | 210.2 | 252.9 | 323.1 | 179.9 | 41.3 | 18.9 |
| 50% | 180.0 | 219.1 | 223.9 | 109.3 | 24.1 | 14.0 |
| 75% | 131.4 | 146.9 | 130.6 | 40.9 | 15.9 | 9.4 |
| 90% | 86.0 | 119.9 | 50.4 | 14.8 | 8.9 | 5.2 |
|
| Mean | 176.5 | 200.6 | 214.7 | 117.5 | 39.7 | 12.4 |
| %Mean | 102.0 | 109.2 | 104.3 | 93.0 | 60.7 | 112.9 |
| Note 1: %Mean is the "Median forecast monthly value (50%)" divided by the "monthly mean" (displayed as a %) |
| Note 2: For current month, graphic represents remaining forecast only, text represents observed + remaining forecast. |
