Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Jul 21 2026 at 7:58 AM PDT |
| Prob | Jul* | Aug | Sep | Oct | Nov | Dec |
| 10% | 46.7 | 46.7 | 44.5 | 45.6 | 49.2 | 74.6 |
| 25% | 46.7 | 46.7 | 44.4 | 45.4 | 45.3 | 54.0 |
| 50% | 46.7 | 46.7 | 44.3 | 45.2 | 43.4 | 45.5 |
| 75% | 46.7 | 46.6 | 44.3 | 45.1 | 43.2 | 44.2 |
| 90% | 46.7 | 46.6 | 44.3 | 45.1 | 43.1 | 44.0 |
|
| Mean | 49.8 | 48.0 | 45.4 | 46.2 | 45.8 | 51.6 |
| %Mean | 93.8 | 97.3 | 97.6 | 97.8 | 94.8 | 88.2 |
| Prob | Jan | Feb | Mar | Apr | May | Jun |
| 10% | 74.8 | 72.0 | 93.4 | 91.7 | 93.0 | 71.8 |
| 25% | 58.7 | 64.1 | 73.0 | 71.8 | 76.5 | 57.2 |
| 50% | 48.6 | 47.9 | 63.1 | 63.0 | 59.7 | 51.9 |
| 75% | 44.6 | 40.7 | 52.4 | 51.3 | 50.1 | 44.5 |
| 90% | 43.3 | 39.1 | 46.7 | 45.6 | 45.7 | 41.5 |
|
| Mean | 52.6 | 53.7 | 66.0 | 64.7 | 64.7 | 53.5 |
| %Mean | 92.4 | 89.2 | 95.6 | 97.4 | 92.3 | 97.0 |
| 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. |
