Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Sep 02 2026 at 8:01 AM PDT |
| Prob | Sep* | Oct | Nov | Dec | Jan | Feb |
| 10% | 0.3 | 1.3 | 2.1 | 7.0 | 3.2 | 5.9 |
| 25% | 0.1 | 0.4 | 1.5 | 2.0 | 2.6 | 3.1 |
| 50% | 0.1 | 0.2 | 0.5 | 1.2 | 1.3 | 1.8 |
| 75% | 0.0 | 0.1 | 0.2 | 0.6 | 0.8 | 1.1 |
| 90% | -0.0 | 0.0 | 0.1 | 0.3 | 0.4 | 0.9 |
|
| Mean | 0.2 | 0.6 | 1.2 | 2.3 | 2.2 | 2.5 |
| %Mean | 50.0 | 33.3 | 41.7 | 52.2 | 59.1 | 72.0 |
| Prob | Mar | Apr | May | Jun | Jul | Aug |
| 10% | 7.9 | 9.3 | 15.5 | 10.6 | 2.0 | 0.5 |
| 25% | 4.7 | 7.2 | 11.9 | 5.9 | 1.1 | 0.3 |
| 50% | 3.2 | 5.9 | 6.8 | 2.4 | 0.5 | 0.1 |
| 75% | 2.5 | 4.2 | 3.5 | 0.6 | 0.2 | 0.0 |
| 90% | 1.6 | 3.3 | 1.4 | 0.4 | 0.1 | 0.0 |
|
| Mean | 3.9 | 6.0 | 7.1 | 3.3 | 0.6 | 0.2 |
| %Mean | 82.1 | 98.3 | 95.8 | 72.7 | 83.3 | 50.0 |
| 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. |
