Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 16 2026 at 7:22 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 1.2 | 1.6 | 20.9 | 28.4 | 102.5 | 114.9 |
| 25% | 1.1 | 1.0 | 2.4 | 12.6 | 33.4 | 56.1 |
| 50% | 1.1 | 0.7 | 1.3 | 4.3 | 17.3 | 26.4 |
| 75% | 1.1 | 0.6 | 1.1 | 1.9 | 6.5 | 14.0 |
| 90% | 1.1 | 0.6 | 0.8 | 1.3 | 2.7 | 9.9 |
|
| Mean | 6.4 | 4.2 | 9.0 | 17.4 | 39.4 | 62.5 |
| %Mean | 17.2 | 16.7 | 14.4 | 24.7 | 43.9 | 42.2 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 140.8 | 196.2 | 197.6 | 325.7 | 308.1 | 104.7 |
| 25% | 74.5 | 128.8 | 154.5 | 231.7 | 181.9 | 54.6 |
| 50% | 35.9 | 75.5 | 111.0 | 152.5 | 72.9 | 17.9 |
| 75% | 20.3 | 50.2 | 84.5 | 98.4 | 33.2 | 8.4 |
| 90% | 14.5 | 37.0 | 64.1 | 61.3 | 18.9 | 4.4 |
|
| Mean | 72.9 | 101.0 | 132.0 | 172.5 | 106.0 | 29.8 |
| %Mean | 49.2 | 74.8 | 84.1 | 88.4 | 68.8 | 60.1 |
| 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. |
