Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 09 2026 at 7:39 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 2.9 | 2.4 | 7.2 | 16.6 | 41.8 | 79.6 |
| 25% | 2.9 | 2.1 | 2.7 | 8.8 | 18.3 | 37.5 |
| 50% | 2.9 | 2.1 | 2.0 | 4.1 | 10.2 | 16.5 |
| 75% | 2.9 | 2.0 | 1.9 | 2.4 | 3.8 | 7.8 |
| 90% | 2.9 | 2.0 | 1.8 | 2.2 | 2.6 | 4.3 |
|
| Mean | 9.9 | 5.1 | 5.9 | 9.7 | 16.5 | 33.4 |
| %Mean | 29.3 | 41.2 | 33.9 | 42.3 | 61.8 | 49.4 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 78.7 | 137.2 | 127.7 | 190.9 | 202.5 | 101.2 |
| 25% | 42.3 | 70.9 | 93.3 | 130.8 | 127.4 | 46.2 |
| 50% | 21.4 | 38.3 | 61.7 | 85.3 | 53.4 | 13.3 |
| 75% | 11.5 | 18.7 | 40.5 | 53.0 | 26.1 | 6.7 |
| 90% | 6.2 | 12.0 | 24.0 | 30.2 | 9.5 | 3.0 |
|
| Mean | 35.5 | 56.0 | 70.8 | 100.1 | 77.6 | 33.5 |
| %Mean | 60.3 | 68.4 | 87.1 | 85.2 | 68.8 | 39.7 |
| 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. |
