Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Feb 21 2026 at 9:32 AM PST |
| Prob | Feb* | Mar | Apr | May | Jun | Jul |
| 10% | 158.4 | 398.1 | 448.5 | 619.6 | 500.1 | 235.4 |
| 25% | 147.4 | 285.7 | 384.8 | 530.4 | 379.0 | 145.3 |
| 50% | 140.6 | 246.0 | 319.0 | 414.9 | 234.2 | 93.9 |
| 75% | 131.1 | 218.6 | 280.4 | 320.6 | 191.4 | 70.0 |
| 90% | 127.1 | 183.6 | 245.9 | 267.8 | 151.2 | 58.3 |
|
| Mean | 115.7 | 175.9 | 266.9 | 429.2 | 367.3 | 176.1 |
| %Mean | 121.5 | 139.9 | 119.5 | 96.7 | 63.8 | 53.3 |
| Prob | Aug | Sep | Oct | Nov | Dec | Jan |
| 10% | 87.4 | 45.8 | 44.7 | 69.4 | 168.7 | 222.6 |
| 25% | 48.6 | 27.7 | 31.7 | 34.8 | 64.2 | 131.9 |
| 50% | 37.2 | 20.3 | 21.0 | 26.9 | 35.0 | 66.3 |
| 75% | 31.3 | 16.9 | 15.7 | 20.5 | 27.0 | 31.8 |
| 90% | 26.8 | 12.6 | 12.8 | 16.8 | 19.2 | 24.9 |
|
| Mean | 53.4 | 24.2 | 25.7 | 34.5 | 59.9 | 107.4 |
| %Mean | 69.7 | 83.9 | 81.7 | 78.0 | 58.4 | 61.7 |
| 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. |
