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Mt. Diablo Creek
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| Watershed Size | 23845.8 acres |
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| Length of Longest Branch of Creek | 17.24 miles |
| Total Channel Length in Watershed | 79.95 miles |
| Average Annual Rainfall | 17.93 inches |
| Estimated Mean Daily Flow | 16.53 cfs |
| Estimated 100-Year Flood Flow | N/A cfs* |
| Highest Elevation in Watershed | 3849 feet |
| Population (estimated) | 24400 people |
| Estimated Percent Impervious | 20.00% |
| Recognized Pollutants of Concern | Diazinon* |