Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 16 2026 at 7:22 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | -0.1 | 0.3 | 1.6 | 5.8 | 57.2 | 107.4 |
| 25% | -0.1 | 0.1 | 0.8 | 2.2 | 21.2 | 38.8 |
| 50% | -0.1 | 0.0 | 0.2 | 1.0 | 6.5 | 15.1 |
| 75% | -0.1 | 0.0 | 0.1 | 0.4 | 1.0 | 3.7 |
| 90% | -0.1 | 0.0 | 0.0 | 0.1 | 0.3 | 1.1 |
|
| Mean | 0.6 | 0.7 | 0.9 | 4.2 | 16.9 | 37.2 |
| %Mean | -16.7 | 0.0 | 22.2 | 23.8 | 38.5 | 40.6 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 110.5 | 121.9 | 41.3 | 21.7 | 7.5 | 4.1 |
| 25% | 53.9 | 63.2 | 25.1 | 9.9 | 5.6 | 3.1 |
| 50% | 20.4 | 26.1 | 10.9 | 5.1 | 1.5 | 0.1 |
| 75% | 7.2 | 12.4 | 4.0 | 1.6 | 0.1 | 0.0 |
| 90% | 1.7 | 3.3 | 2.4 | 0.9 | 0.0 | 0.0 |
|
| Mean | 39.7 | 41.3 | 18.4 | 6.6 | 2.3 | 1.1 |
| %Mean | 51.4 | 63.2 | 59.2 | 77.3 | 65.2 | 9.1 |
| 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. |
