Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Feb 10 2026 at 7:49 AM PST |
| Prob | Feb* | Mar | Apr | May | Jun | Jul |
| 10% | 56.6 | 86.3 | 57.8 | 58.3 | 33.7 | 22.2 |
| 25% | 46.7 | 67.0 | 43.0 | 41.1 | 24.5 | 19.2 |
| 50% | 36.3 | 45.3 | 36.9 | 30.4 | 20.2 | 17.7 |
| 75% | 27.5 | 32.7 | 28.0 | 23.8 | 16.9 | 15.2 |
| 90% | 23.0 | 25.2 | 25.2 | 17.7 | 14.8 | 13.5 |
|
| Mean | 39.7 | 44.7 | 37.2 | 36.5 | 27.5 | 19.5 |
| %Mean | 91.4 | 101.3 | 99.2 | 83.3 | 73.5 | 90.8 |
| Prob | Aug | Sep | Oct | Nov | Dec | Jan |
| 10% | 19.7 | 18.3 | 24.8 | 37.9 | 85.4 | 87.0 |
| 25% | 17.5 | 16.1 | 17.8 | 22.8 | 44.7 | 50.6 |
| 50% | 16.1 | 15.1 | 15.7 | 16.2 | 24.8 | 31.3 |
| 75% | 14.1 | 13.3 | 13.8 | 14.8 | 17.0 | 21.7 |
| 90% | 12.6 | 12.0 | 12.4 | 12.2 | 14.6 | 16.4 |
|
| Mean | 15.8 | 14.8 | 16.9 | 20.6 | 33.1 | 39.4 |
| %Mean | 101.9 | 102.0 | 92.9 | 78.6 | 74.9 | 79.4 |
| 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. |
