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MCCLOUD RIVER - SHASTA LAKE (MSSC1)
Latitude:
40.95º N
Longitude:
122.22º W
Elevation:
1100 Feet
Location: Shasta County in CA
River Group: Upper Sacramento
Issuance Time: Feb 04 2026 at 7:46 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.
Monthly Probability Plot
Monthly Streamflow Volume (1000s of Acre-Feet)
Data Updated: Aug 09 2013 at 1:01 PM PDT
Prob Feb Mar Apr May Jun Jul
10% 153.4 251.8 174.0 137.6 94.0 76.9
25% 101.7 181.5 132.0 105.0 77.3 69.2
50% 71.3 139.4 105.1 94.3 66.5 62.5
75% 58.4 105.6 90.2 80.2 58.4 56.5
90% 55.7 75.0 77.8 69.0 52.5 50.9
Mean
%Mean
Prob Aug Sep Oct Nov Dec Jan
10% 69.0 63.7 63.5 115.4 219.7 354.8
25% 65.0 59.1 56.3 76.1 158.4 216.3
50% 59.0 53.3 50.7 56.3 84.1 119.9
75% 54.1 49.5 46.5 43.3 50.2 68.3
90% 49.2 45.6 43.1 38.8 41.9 49.8
Mean
%Mean
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.

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