National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 |  End of River Group

MOKELUMNE RIVER - BENSON'S FERRY (THTC1)
Latitude: 38.26º NLongitude: 121.44º WElevation: 16 Feet
Location: Sacramento County in CaliforniaRiver Group: San Joaquin
Monitor Stage: 12.0 FeetFlood Stage: 17.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025 -- 11.84 Feb 16, 2025
2024 -- 10.87 Mar 4, 2024
2023 -- 20.23 Jan 1, 2023
2022 -- 10.71 Dec 29, 2021
2021 -- 6.71 Jan 29, 2021
 Historical High Stage/Flow Events (Period of Record - Jan 1959 to Present) - Ranked by Stage
1997 -- 21.69 Jan 02, 1997
2017 -- 20.57 Feb 11, 2017
2023 -- 20.23 Jan 1, 2023
2006 -- 18.54 Apr 06, 2006
1986 -- 18.32 Feb 18, 1986
1995 -- 17.51 Mar 12, 1995
 * Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is -0.75 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ017)
Tonight: Mostly clear. Lows 55 to 61. Light winds.

Saturday: Partly cloudy. Highs 84 to 90. West winds up to 10 mph.

Saturday Night: Mostly clear. Lows 52 to 60. West winds up to 10 mph with gusts to around 20 mph.

Sunday: Mostly sunny. Highs 80 to 88. Northwest winds up to 10 mph with gusts to around 25 mph.

Sunday Night: Mostly clear. Lows 49 to 55. West winds up to 10 mph in the evening becoming light.

Monday: Mostly sunny. Highs 82 to 88.

Monday Night: Mostly clear. Lows 51 to 57.

Tuesday through Thursday: Mostly clear. Highs 78 to 88. Lows 50 to 57.

Thursday Night and Friday: Partly cloudy. Lows 51 to 57. Highs 77 to 84.
Flood Impacts
29.6 FeetTop of Levee Left Bank
17.25 FeetSome local farm roads are closed. Low lying areas along the river are flooded.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.