Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 17 2026 at 7:53 AM PDT |
| Prob | Aug* | Sep | Oct | Nov | Dec | Jan |
| 10% | 1.9 | 2.2 | 4.5 | 9.1 | 48.9 | 73.5 |
| 25% | 1.8 | 1.8 | 2.5 | 4.4 | 12.1 | 22.9 |
| 50% | 1.8 | 1.8 | 1.7 | 2.6 | 5.2 | 6.6 |
| 75% | 1.8 | 1.8 | 1.6 | 1.6 | 2.6 | 3.3 |
| 90% | 1.8 | 1.7 | 1.5 | 1.4 | 1.4 | 2.6 |
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| Mean | + | + | + | + | + | + |
| %Mean | + | + | + | + | + | + |
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 73.1 | 66.5 | 45.1 | 39.8 | 14.5 | 4.0 |
| 25% | 27.9 | 50.5 | 33.1 | 27.2 | 6.7 | 3.6 |
| 50% | 9.6 | 18.7 | 16.4 | 7.9 | 3.7 | 2.6 |
| 75% | 4.8 | 7.9 | 8.3 | 4.6 | 2.6 | 2.1 |
| 90% | 2.8 | 4.8 | 4.6 | 2.6 | 1.8 | 1.4 |
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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. |
