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% | 0.7 | 1.0 | 2.8 | 5.9 | 23.1 | 16.4 |
| 25% | 0.7 | 0.5 | 1.0 | 2.6 | 4.9 | 6.0 |
| 50% | 0.7 | 0.3 | 0.5 | 1.1 | 2.1 | 3.3 |
| 75% | 0.7 | 0.2 | 0.4 | 0.7 | 1.1 | 1.5 |
| 90% | 0.7 | 0.2 | 0.2 | 0.4 | 0.5 | 0.8 |
|
| Mean | 1.2 | 0.9 | 2.0 | 4.0 | 6.1 | 7.1 |
| %Mean | 58.3 | 33.3 | 25.0 | 27.5 | 34.4 | 46.5 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 24.2 | 31.4 | 38.3 | 73.4 | 50.1 | 14.0 |
| 25% | 9.1 | 19.9 | 32.5 | 52.2 | 28.7 | 8.3 |
| 50% | 4.8 | 10.7 | 22.2 | 31.4 | 13.5 | 4.6 |
| 75% | 2.6 | 6.2 | 15.1 | 18.6 | 5.7 | 2.0 |
| 90% | 1.9 | 4.6 | 10.0 | 8.5 | 3.5 | 1.1 |
|
| Mean | 8.2 | 14.2 | 24.9 | 32.8 | 19.0 | 5.2 |
| %Mean | 58.5 | 75.4 | 89.2 | 95.7 | 71.1 | 88.5 |
| 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. |
