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)
Today: Partly cloudy in the morning then clearing. Widespread fog in the morning. Highs around 66. Light winds.

Tonight: Clear. Lows 39 to 47. Light winds.

Thursday: Mostly sunny. Highs 65 to 71. Light winds.

Thursday Night: Mostly cloudy. Lows around 46. Light winds.

Friday: Mostly cloudy. Highs around 65. Light winds.

Friday Night: Mostly clear. Lows around 44.

Saturday: Partly cloudy. Highs around 64.

Saturday Night: Partly cloudy. Lows around 46.

Sunday: Mostly cloudy with a slight chance of rain. Highs around 62.

Sunday Night through Tuesday: Mostly cloudy with a chance of rain. Lows around 43. Highs around 57.
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.