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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: | Jan 12 2026 at 7:25 AM PST |
| 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 August 1 at 12 UTC) | Observed Available Apr 2 to Aug 1 | ||||
| Forecast Peak 1-Day Streamflow Volume: (April 1 at 12 UTC to August 1 at 12 UTC) | 10% (Max) 06/08/2026 51.9kaf | 25% 05/25/2026 33.6kaf | 50% (Prob) 05/10/2026 23.6kaf | 75% 04/19/2026 15.8kaf | 90% (Min) 04/06/2026 11.7kaf |
| Tabular 5-Day Volume Accumulations (1000s of Acre-Feet) | ||||
| Probability | 01/12 to 01/17 | 01/17 to 01/22 | 01/22 to 01/27 | 01/27 to 02/01 |
| 10% | 25.8 kaf | 42.1 kaf | 73.3 kaf | 53.0 kaf |
| 25% | 25.2 kaf | 27.0 kaf | 28.8 kaf | 31.1 kaf |
| 50% (Median) | 24.5 kaf | 23.9 kaf | 20.1 kaf | 20.2 kaf |
| 75% | 23.9 kaf | 22.0 kaf | 16.7 kaf | 13.5 kaf |
| 90% | 23.4 kaf | 20.2 kaf | 15.4 kaf | 12.3 kaf |
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ019) |
| Today: Patchy fog early in the morning. Areas of fog late in the morning. Mostly sunny. Highs around 58. Light winds. Tonight: Mostly clear. Patchy fog after midnight. Lows 37 to 43. Light winds. Tuesday: Partly cloudy in the morning then clearing. Patchy dense fog. Highs around 58. Light winds. Tuesday Night: Clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows 38 to 44. Light winds. Wednesday: Partly cloudy in the morning then clearing. Patchy fog in the morning. Highs 55 to 61. Light winds. Wednesday Night: Mostly clear. Patchy fog. Lows around 43. Thursday: Partly cloudy. Patchy fog. Highs around 59. Thursday Night through Saturday Night: Mostly clear. Lows around 44. Highs around 60. Sunday: Partly cloudy. Patchy fog. Highs around 59. |