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SAN JOAQUIN RIVER - PATTERSON (PATC1)
Latitude:
37.49º N
Longitude:
121.08º W
Elevation:
97 Feet
Location: Stanislaus County in CA
River Group: San Joaquin
Issuance Time: May 10 2025 at 8:53 AM PDT
Action/
Monitor:
48.0 Ft
Minor
Flood:
54.7 Ft
Moderate
Flood:
57.3 Ft
Major
Flood:
58.3 Ft
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  PATC1
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What information is considered in this forecast?
Verification / Historical Plots
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Location Photographs

ESRI™ Locator Map
Flood Impacts
58.3 FeetStages above 58.3 feet result in flooding outside the levee. Top of levee.
Official 7 Day National Weather Service Forecast   (CAZ019)
Tonight: Clear. Lows 53 to 59. Northwest winds up to 15 mph.

Sunday: Sunny. Highs 74 to 84. Northwest winds up to 15 mph with gusts to around 25 mph.

Sunday Night: Clear, cooler. Lows 45 to 51. Northwest winds 10 to 15 mph with gusts to around 30 mph.

Monday: Partly cloudy with a slight chance of rain showers in the morning, then partly cloudy in the afternoon. Highs 63 to 71. Southwest winds up to 10 mph shifting to the west with gusts to around 25 mph in the afternoon.

Monday Night: Mostly clear. Lows 44 to 50. West winds up to 15 mph. Gusts up to 30 mph decreasing to 20 mph after midnight.

Tuesday: Mostly sunny. Highs 65 to 74.

Tuesday Night: Clear. Lows 46 to 52.

Wednesday through Thursday: Clear. Highs 76 to 86. Lows 46 to 55.

Thursday Night through Saturday: Mostly clear. Lows 52 to 59. Highs 79 to 89.

Flood Impacts
58.3 FeetStages above 58.3 feet result in flooding outside the levee. Top of levee.