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San Ramon Creek
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| Watershed Size | 32915.36 acres |
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| Length of Longest Branch of Creek | 18.89 miles |
| Total Channel Length in Watershed | 136.73 miles |
| Average Annual Rainfall | 21.4 inches |
| Estimated Mean Daily Flow | 27.15 cfs |
| Estimated 100-Year Flood Flow | 13100 cfs* |
| Highest Elevation in Watershed | 2060 feet |
| Population (estimated) | 72400 people |
| Estimated Percent Impervious | 20.00% |
| Recognized Pollutants of Concern | Diazinon |