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% | 11.1 | 10.9 | 57.7 | 114.1 | 248.5 | 294.0 |
| 25% | 10.8 | 6.5 | 15.8 | 42.4 | 91.2 | 180.0 |
| 50% | 10.7 | 5.3 | 6.1 | 23.8 | 43.5 | 79.7 |
| 75% | 10.7 | 5.2 | 4.8 | 7.6 | 15.5 | 35.2 |
| 90% | 10.7 | 5.1 | 3.9 | 5.0 | 7.8 | 20.0 |
|
| Mean | 29.6 | 14.3 | 26.1 | 46.7 | 95.7 | 149.9 |
| %Mean | 36.1 | 37.1 | 23.4 | 51.0 | 45.5 | 53.2 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 356.5 | 483.9 | 450.1 | 773.8 | 777.8 | 492.7 |
| 25% | 187.4 | 295.7 | 362.1 | 577.9 | 542.0 | 188.0 |
| 50% | 99.1 | 224.2 | 280.8 | 424.6 | 272.5 | 63.9 |
| 75% | 63.6 | 125.5 | 212.5 | 269.6 | 126.1 | 30.2 |
| 90% | 34.0 | 101.9 | 173.6 | 214.1 | 67.4 | 19.8 |
|
| Mean | 165.0 | 236.8 | 302.6 | 437.3 | 330.5 | 128.9 |
| %Mean | 60.1 | 94.7 | 92.8 | 97.1 | 82.5 | 49.6 |
| 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. |
