Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Apr 07 2026 at 7:43 AM PDT |
| Prob | Apr* | May | Jun | Jul | Aug | Sep |
| 10% | 29.6 | 22.8 | 7.8 | 3.0 | 1.1 | 1.2 |
| 25% | 27.5 | 15.3 | 5.8 | 2.1 | 0.8 | 0.7 |
| 50% | 22.9 | 11.9 | 4.8 | 1.7 | 0.6 | 0.5 |
| 75% | 20.6 | 10.4 | 3.9 | 1.4 | 0.4 | 0.4 |
| 90% | 19.8 | 8.6 | 3.4 | 1.1 | 0.4 | 0.4 |
|
| Mean | 24.9 | 32.8 | 19.0 | 5.2 | 1.2 | 0.9 |
| %Mean | 92.0 | 36.3 | 25.3 | 32.7 | 50.0 | 55.6 |
| Prob | Oct | Nov | Dec | Jan | Feb | Mar |
| 10% | 3.0 | 6.1 | 23.5 | 16.5 | 24.4 | 31.8 |
| 25% | 1.2 | 2.7 | 5.0 | 6.1 | 9.2 | 20.1 |
| 50% | 0.7 | 1.2 | 2.4 | 3.5 | 4.9 | 10.8 |
| 75% | 0.6 | 0.9 | 1.2 | 1.6 | 2.8 | 6.4 |
| 90% | 0.5 | 0.6 | 0.7 | 0.9 | 2.0 | 4.7 |
|
| Mean | 2.0 | 4.0 | 6.1 | 7.1 | 8.2 | 14.2 |
| %Mean | 35.0 | 30.0 | 39.3 | 49.3 | 59.8 | 76.1 |
| 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. |
