Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 19 2026 at 7:20 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 0.1 | 0.3 | 2.9 | 3.0 | 5.8 | 3.0 |
| 25% | 0.1 | 0.1 | 0.5 | 1.1 | 1.5 | 1.1 |
| 50% | 0.1 | 0.0 | 0.2 | 0.5 | 0.4 | 0.6 |
| 75% | 0.1 | 0.0 | 0.1 | 0.2 | 0.3 | 0.3 |
| 90% | 0.1 | 0.0 | 0.0 | 0.2 | 0.2 | 0.2 |
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| Mean | + | + | + | + | + | + |
| %Mean | + | + | + | + | + | + |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 9.2 | 10.8 | 22.9 | 42.9 | 33.0 | 7.8 |
| 25% | 2.1 | 7.3 | 18.9 | 29.8 | 14.9 | 3.4 |
| 50% | 1.1 | 4.0 | 14.8 | 18.5 | 6.2 | 1.3 |
| 75% | 0.6 | 2.6 | 11.3 | 9.0 | 2.9 | 0.5 |
| 90% | 0.3 | 1.5 | 6.0 | 7.2 | 2.0 | 0.3 |
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| Mean | + | + | + | + | + | + |
| %Mean | + | + | + | + | + | + |
| 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. |
