Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 08 2026 at 7:36 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 19.1 | 12.9 | 32.1 | 57.3 | 157.2 | 221.8 |
| 25% | 18.5 | 11.3 | 15.8 | 31.1 | 59.4 | 127.2 |
| 50% | 18.1 | 10.1 | 11.5 | 19.1 | 33.2 | 61.9 |
| 75% | 18.0 | 9.6 | 9.3 | 13.3 | 20.2 | 30.3 |
| 90% | 17.9 | 9.2 | 8.6 | 11.8 | 14.5 | 21.1 |
|
| Mean | 53.4 | 24.2 | 25.7 | 34.5 | 59.9 | 107.4 |
| %Mean | 33.9 | 41.7 | 44.7 | 55.4 | 55.4 | 57.6 |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 240.1 | 377.4 | 379.0 | 777.7 | 883.2 | 471.7 |
| 25% | 145.6 | 223.9 | 305.1 | 574.4 | 570.5 | 247.5 |
| 50% | 86.3 | 132.4 | 222.9 | 379.7 | 249.9 | 99.8 |
| 75% | 38.6 | 78.3 | 173.4 | 242.4 | 122.5 | 41.1 |
| 90% | 26.0 | 56.2 | 99.9 | 137.1 | 57.1 | 19.7 |
|
| Mean | 115.7 | 175.9 | 266.9 | 429.2 | 367.3 | 176.1 |
| %Mean | 74.6 | 75.3 | 83.5 | 88.5 | 68.0 | 56.7 |
| 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. |
