CNRFC - Hydrology - River Guidance - Graphical RVF

End of River Group

Location:

MOKELUMNE RIVER - BENSON'S FERRY (THTC1)

Latitude: 38.26º N	Longitude: 121.44º W	Elevation: 16 Feet
Location: Sacramento County in California		Bulletin Group: San Joaquin		River Group: North San Joaquin

Issuance Time:

Jul 19 2025 at 8:02 AM PDT

Next Issuance:

Jul 20 2025 at 9:00 AM PDT

Action/Monitor: 12.0 Feet

Minor Flood: 17.0 Feet

Moderate Flood: 28.6 Feet

Major Flood: 29.6 Feet

Please Note:

On August 14, 2025, the moderate flood stage for this location will change to 19.0 ft, and the major flood stage will change to 20.0 ft. More information can be found here.

Plot Type:

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2024	--	10.87	Mar 4, 2024
2023	--	20.23	Jan 1, 2023
2022	--	10.71	Dec 29, 2021
2021	--	6.71	Jan 29, 2021
2020	--	8.25	Apr 8, 2020
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
29.6 Feet	Top of Levee Left Bank
17.25 Feet	Some local farm roads are closed. Low lying areas along the river are flooded.

Official 7 Day National Weather Service Forecast (CAZ017)

Tonight: Clear. Lows 53 to 62. South winds up to 10 mph with gusts to around 20 mph.

Sunday: Sunny. Highs 86 to 96. South winds up to 10 mph with gusts to around 20 mph.

Sunday Night: Clear. Lows 55 to 62. South winds 10 to 15 mph with gusts to around 25 mph.

Monday: Sunny. Highs 80 to 88. South winds 10 to 15 mph with gusts to around 25 mph.

Monday Night: Mostly clear. Lows 54 to 60. South winds 10 to 15 mph with gusts to around 30 mph.

Tuesday: Mostly sunny. Highs 77 to 85.

Tuesday Night: Mostly clear. Lows 51 to 59.

Wednesday through Saturday: Clear. Highs 79 to 88. Lows 51 to 59.

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.

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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.