Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Sep 01 2026 at 8:20 AM PDT |
| Prob | Sep* | Oct | Nov | Dec | Jan | Feb |
| 10% | 2.0 | 3.9 | 5.0 | 9.5 | 8.2 | 10.9 |
| 25% | 1.6 | 2.7 | 4.0 | 5.0 | 5.3 | 6.4 |
| 50% | 1.4 | 1.7 | 3.5 | 3.7 | 3.6 | 3.7 |
| 75% | 1.3 | 1.5 | 2.8 | 3.2 | 3.0 | 3.0 |
| 90% | 1.3 | 1.3 | 2.2 | 2.9 | 2.6 | 2.2 |
|
| Mean | 4.6 | 4.9 | 5.3 | 5.8 | 7.0 | 7.1 |
| %Mean | 30.4 | 34.7 | 66.0 | 63.8 | 51.4 | 52.1 |
| Prob | Mar | Apr | May | Jun | Jul | Aug |
| 10% | 17.6 | 21.9 | 36.9 | 58.7 | 59.6 | 24.3 |
| 25% | 11.2 | 11.8 | 19.7 | 38.5 | 25.9 | 12.0 |
| 50% | 5.9 | 5.1 | 12.9 | 18.0 | 8.0 | 2.1 |
| 75% | 2.7 | 2.7 | 7.6 | 7.2 | 2.0 | 1.4 |
| 90% | 1.9 | 2.3 | 3.3 | 3.1 | 1.3 | 1.3 |
|
| Mean | 8.9 | 8.5 | 16.9 | 23.5 | 15.3 | 6.5 |
| %Mean | 66.3 | 60.0 | 76.3 | 76.6 | 52.3 | 32.3 |
| 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. |
