Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Feb 01 2026 at 7:32 AM PST |
| Prob | Feb* | Mar | Apr | May | Jun | Jul |
| 10% | 120.4 | 183.8 | 117.5 | 47.0 | 13.4 | 5.8 |
| 25% | 86.8 | 134.3 | 71.1 | 21.8 | 9.0 | 4.2 |
| 50% | 41.5 | 81.6 | 41.1 | 15.3 | 6.3 | 2.5 |
| 75% | 13.7 | 44.3 | 18.5 | 9.9 | 4.8 | 1.4 |
| 90% | 12.2 | 14.6 | 9.2 | 5.8 | 3.5 | 0.5 |
|
| Mean | 107.8 | 100.9 | 47.4 | 19.3 | 7.5 | 2.9 |
| %Mean | 38.5 | 80.9 | 86.7 | 79.3 | 84.0 | 86.2 |
| Prob | Aug | Sep | Oct | Nov | Dec | Jan |
| 10% | 1.6 | 1.7 | 8.4 | 97.2 | 237.5 | 280.7 |
| 25% | 0.6 | 0.7 | 4.7 | 32.7 | 171.0 | 160.4 |
| 50% | 0.1 | 0.1 | 1.6 | 9.7 | 66.6 | 83.9 |
| 75% | 0.0 | 0.0 | 0.5 | 3.5 | 26.0 | 52.0 |
| 90% | 0.0 | 0.0 | 0.0 | 1.8 | 5.6 | 21.6 |
|
| Mean | 1.5 | 1.3 | 5.5 | 31.5 | 89.4 | 111.8 |
| %Mean | 6.7 | 7.7 | 29.1 | 30.8 | 74.5 | 75.0 |
| 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. |
