Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 05 2026 at 8:34 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 1.8 | 4.0 | 11.9 | 25.7 | 39.0 | 28.7 |
| 25% | 1.7 | 1.7 | 6.4 | 11.4 | 16.5 | 20.0 |
| 50% | 1.7 | 1.3 | 2.2 | 6.8 | 7.7 | 11.7 |
| 75% | 1.7 | 1.3 | 1.6 | 3.0 | 4.6 | 6.8 |
| 90% | 1.7 | 1.2 | 1.3 | 2.0 | 2.3 | 4.6 |
|
| Mean | 2.3 | 1.8 | 8.0 | 10.4 | 15.7 | 20.8 |
| %Mean | 73.9 | 72.2 | 27.5 | 65.4 | 49.0 | 56.2 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 35.8 | 43.9 | 66.7 | 125.2 | 140.7 | 96.3 |
| 25% | 21.4 | 37.6 | 54.0 | 101.8 | 98.3 | 37.5 |
| 50% | 13.6 | 24.2 | 46.5 | 75.8 | 54.0 | 12.7 |
| 75% | 9.5 | 19.5 | 35.7 | 54.2 | 22.2 | 5.6 |
| 90% | 5.7 | 16.0 | 29.9 | 47.1 | 16.5 | 3.8 |
|
| Mean | 20.5 | 32.1 | 52.8 | 79.1 | 57.9 | 20.7 |
| %Mean | 66.3 | 75.4 | 88.1 | 95.8 | 93.3 | 61.4 |
| 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. |
