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% | 3.1 | 7.0 | 38.7 | 83.8 | 91.8 | 78.2 |
| 25% | 2.0 | 4.5 | 18.7 | 55.2 | 55.1 | 54.9 |
| 50% | 1.7 | 2.4 | 11.5 | 25.7 | 39.0 | 33.8 |
| 75% | 1.5 | 1.4 | 4.2 | 14.1 | 25.7 | 25.1 |
| 90% | 1.5 | 1.2 | 2.6 | 8.5 | 16.0 | 17.4 |
|
| Mean | 2.9 | 4.9 | 14.8 | 37.6 | 44.7 | 42.0 |
| %Mean | 58.6 | 49.0 | 77.7 | 68.4 | 87.2 | 80.5 |
| Prob | Mar | Apr | May | Jun | Jul | Aug |
| 10% | 89.7 | 68.0 | 48.9 | 21.0 | 8.8 | 5.4 |
| 25% | 59.6 | 49.3 | 42.5 | 16.9 | 7.0 | 4.4 |
| 50% | 42.2 | 38.1 | 23.9 | 11.2 | 5.5 | 3.6 |
| 75% | 33.6 | 23.2 | 15.6 | 7.5 | 4.2 | 2.5 |
| 90% | 22.0 | 19.3 | 9.7 | 5.6 | 3.1 | 1.8 |
|
| Mean | 48.6 | 40.5 | 31.0 | 14.4 | 5.8 | 3.5 |
| %Mean | 86.8 | 94.1 | 77.1 | 77.8 | 94.8 | 102.9 |
| 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. |
