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| TUOLUMNE RIVER - NEW DON PEDRO RESERVOIR (NDPC1) | ||||||||||||||||||
| Latitude: 37.70º N | Longitude: 120.42º W | Elevation: 272 Feet | ||||||||||||||||
| Location: Tuolumne County in CA | ||||||||||||||||||
| River Group: San Joaquin | ||||||||||||||||||
| Issuance Time: | Jun 07 2026 at 7:11 AM PDT |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. Flow data on this product are unregulated / full natural flow. |
| 4x5-Day Probability Plot |

| Tabular 4 x 5-Day Streamflow Volume Data | |||||
| Observed Peak 1-Day Streamflow Volume: (April 1 at 12 UTC to Current Date at 12 UTC) | Observed 05/12/2026 12.9kaf | ||||
| Forecast Peak 1-Day Streamflow Volume: (Current Date at 12 UTC to August 1 at 12 UTC) | 10% (Max) 06/17/2026 5.5kaf | 25% 06/16/2026 5.1kaf | 50% (Prob) 06/14/2026 4.9kaf | 75% 06/08/2026 4.8kaf | 90% (Min) 06/08/2026 4.8kaf |
| Tabular 5-Day Volume Accumulations (1000s of Acre-Feet) | ||||
| Probability | 06/07 to 06/12 | 06/12 to 06/17 | 06/17 to 06/22 | 06/22 to 06/27 |
| 10% | 21.9 kaf | 25.0 kaf | 20.3 kaf | 17.2 kaf |
| 25% | 21.7 kaf | 24.2 kaf | 18.6 kaf | 14.9 kaf |
| 50% (Median) | 21.4 kaf | 23.5 kaf | 17.8 kaf | 13.6 kaf |
| 75% | 21.1 kaf | 22.7 kaf | 17.2 kaf | 12.0 kaf |
| 90% | 21.0 kaf | 21.8 kaf | 16.6 kaf | 11.5 kaf |
| Location Photographs | ||
| ESRI™ Locator Map |