Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Sep 02 2026 at 7:50 AM PDT |
| Prob | Sep* | Oct | Nov | Dec | Jan | Feb |
| 10% | 9.7 | 30.4 | 120.8 | 268.7 | 352.9 | 366.4 |
| 25% | 7.3 | 15.6 | 61.4 | 202.0 | 183.3 | 233.1 |
| 50% | 6.7 | 5.7 | 24.4 | 91.7 | 128.4 | 118.7 |
| 75% | 6.5 | 5.0 | 9.7 | 48.0 | 87.6 | 78.1 |
| 90% | 6.2 | 4.6 | 4.8 | 21.3 | 51.9 | 58.1 |
|
| Mean | 11.8 | 20.5 | 55.5 | 144.5 | 178.0 | 167.4 |
| %Mean | 56.8 | 27.8 | 44.0 | 63.5 | 72.1 | 70.9 |
| Prob | Mar | Apr | May | Jun | Jul | Aug |
| 10% | 365.6 | 266.0 | 291.2 | 209.3 | 53.9 | 25.1 |
| 25% | 240.6 | 235.8 | 246.4 | 119.2 | 37.3 | 21.2 |
| 50% | 174.5 | 173.6 | 170.2 | 75.8 | 28.0 | 15.5 |
| 75% | 125.4 | 119.8 | 86.0 | 28.9 | 16.0 | 9.7 |
| 90% | 83.7 | 86.5 | 39.8 | 20.7 | 11.4 | 6.5 |
|
| Mean | 192.3 | 181.3 | 172.4 | 95.3 | 34.0 | 15.6 |
| %Mean | 90.7 | 95.8 | 98.7 | 79.5 | 82.4 | 99.4 |
| 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. |
