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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 23 2025 at 7:50 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.
Monthly Probability Plot
Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Jun 22 2025 at 8:55 AM PDT
ProbJun*JulAugSepOctNov
10%154.239.016.212.960.3120.3
25%153.536.914.28.818.945.1
50%153.336.113.87.17.526.6
75%153.234.613.76.95.98.2
90%153.234.113.76.94.95.5
Mean333.0131.029.914.526.247.1
%Mean46.027.646.249.028.656.5
ProbDecJanFebMarAprMay
10%248.9406.9361.5497.4453.1781.6
25%92.1187.9182.5297.2363.5583.2
50%44.282.698.4190.7276.3424.1
75%15.734.663.7124.7209.6268.6
90%8.020.434.4102.8173.7213.4
Mean97.2151.7164.8237.1300.9435.8
%Mean45.554.459.780.491.897.3
Note 1: %Mean is the "Median forecast monthly value (50%)" divided by the "monthly mean" (displayed as a %)
Note 2: For current month, graphic represents remaining forecast only, text represents observed + remaining forecast.

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Sunny. Highs 85 to 93. West winds up to 10 mph with gusts to around 20 mph.

Tonight: Clear. Lows 55 to 63. Northwest winds up to 10 mph with gusts to around 20 mph.

Tuesday: Sunny. Highs 85 to 93. West winds up to 10 mph.

Tuesday Night: Clear. Lows 53 to 61. Northwest winds up to 15 mph.

Wednesday: Sunny. Highs 88 to 96. Northwest winds up to 10 mph.

Wednesday Night: Clear. Lows 56 to 64.

Thursday: Sunny. Highs 90 to 96.

Thursday Night through Sunday: Clear. Lows 58 to 68. Highs 90 to 100.