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% | 3.6 | 3.1 | 20.5 | 46.4 | 136.5 | 207.1 |
| 25% | 3.5 | 2.3 | 6.1 | 14.7 | 52.6 | 100.3 |
| 50% | 3.4 | 1.8 | 2.2 | 6.6 | 18.6 | 41.9 |
| 75% | 3.4 | 1.7 | 1.7 | 3.6 | 6.5 | 17.3 |
| 90% | 3.4 | 1.7 | 1.3 | 2.7 | 4.3 | 8.8 |
|
| Mean | 12.6 | 6.6 | 9.3 | 17.4 | 42.1 | 83.6 |
| %Mean | 27.0 | 27.3 | 23.7 | 37.9 | 44.2 | 50.1 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 266.7 | 319.2 | 265.5 | 389.5 | 365.1 | 186.6 |
| 25% | 136.9 | 228.8 | 212.7 | 282.0 | 254.7 | 82.0 |
| 50% | 76.5 | 125.7 | 132.1 | 202.0 | 96.9 | 30.1 |
| 75% | 26.9 | 61.0 | 101.9 | 104.7 | 46.2 | 11.9 |
| 90% | 16.6 | 44.0 | 72.2 | 77.5 | 22.3 | 7.2 |
|
| Mean | 91.6 | 124.8 | 162.5 | 230.5 | 159.3 | 57.5 |
| %Mean | 83.5 | 100.7 | 81.3 | 87.6 | 60.8 | 52.3 |
| 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. |
