Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 29 2026 at 8:18 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 0.4 | 0.5 | 2.4 | 5.8 | 24.5 | 18.0 |
| 25% | 0.4 | -0.1 | 0.4 | 2.2 | 4.9 | 6.1 |
| 50% | 0.4 | -0.3 | -0.1 | 0.5 | 1.5 | 3.0 |
| 75% | 0.4 | -0.4 | -0.2 | 0.1 | 0.6 | 1.0 |
| 90% | 0.4 | -0.4 | -0.4 | -0.2 | -0.1 | 0.2 |
|
| Mean | 0.2 | 0.1 | 1.3 | 3.5 | 6.5 | 7.5 |
| %Mean | 200.0 | -300.0 | -7.7 | 14.3 | 23.1 | 40.0 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 26.4 | 37.8 | 46.0 | 76.8 | 50.5 | 13.3 |
| 25% | 9.4 | 23.2 | 39.6 | 54.5 | 28.8 | 7.7 |
| 50% | 4.8 | 12.1 | 24.0 | 31.2 | 12.9 | 4.0 |
| 75% | 2.5 | 6.8 | 15.4 | 18.4 | 5.0 | 1.3 |
| 90% | 1.6 | 4.5 | 9.7 | 7.9 | 2.9 | 0.5 |
|
| Mean | 9.3 | 17.2 | 27.2 | 31.5 | 17.0 | 3.7 |
| %Mean | 51.6 | 70.3 | 88.2 | 99.0 | 75.9 | 108.1 |
| 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. |
