Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Jul 22 2026 at 7:37 AM PDT |
| Prob | Jul* | Aug | Sep | Oct | Nov | Dec |
| 10% | 5.9 | 2.7 | 2.3 | 8.4 | 29.8 | 80.2 |
| 25% | 5.9 | 2.6 | 1.9 | 3.0 | 17.1 | 47.6 |
| 50% | 5.9 | 2.5 | 1.6 | 1.8 | 4.7 | 17.7 |
| 75% | 5.9 | 2.5 | 1.4 | 1.1 | 1.7 | 8.6 |
| 90% | 5.9 | 2.5 | 1.4 | 1.0 | 1.1 | 1.8 |
|
| Mean | 4.2 | 2.9 | 2.7 | 4.1 | 10.4 | 29.6 |
| %Mean | 140.5 | 86.2 | 59.3 | 43.9 | 45.2 | 59.8 |
| Prob | Jan | Feb | Mar | Apr | May | Jun |
| 10% | 97.9 | 132.1 | 108.4 | 73.8 | 42.7 | 18.3 |
| 25% | 59.2 | 70.3 | 78.7 | 51.6 | 29.4 | 14.2 |
| 50% | 28.8 | 34.6 | 49.8 | 21.6 | 13.7 | 8.6 |
| 75% | 12.7 | 12.9 | 16.6 | 12.6 | 6.5 | 4.2 |
| 90% | 6.5 | 7.2 | 8.8 | 6.2 | 4.5 | 2.2 |
|
| Mean | 47.1 | 57.8 | 59.1 | 35.8 | 21.0 | 9.4 |
| %Mean | 61.1 | 59.9 | 84.3 | 60.3 | 65.2 | 91.5 |
| 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. |
