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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)
Probability06/07 to 06/1206/12 to 06/1706/17 to 06/2206/22 to 06/27
10%21.9 kaf25.0 kaf20.3 kaf17.2 kaf
25%21.7 kaf24.2 kaf18.6 kaf14.9 kaf
50%
(Median)
21.4 kaf23.5 kaf17.8 kaf13.6 kaf
75%21.1 kaf22.7 kaf17.2 kaf12.0 kaf
90%21.0 kaf21.8 kaf16.6 kaf11.5 kaf

Location Photographs

ESRI™ Locator Map