CNRFC - Hydrology - River Guidance - Graphical RVF

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

Location:

AMERICAN RIVER - SACRAMENTO AT H STREET (SAMC1)

Latitude: 38.57º N	Longitude: 121.42º W	Elevation: 45 Feet
Location: Sacramento County in California		Bulletin Group: Lower Sacramento		River Group: Lower Sacramento

Issuance Time:

Jun 16 2025 at 6:13 AM PDT

Next Issuance:

Jun 17 2025 at 9:00 AM PDT

Action/Monitor: 39.0 Feet

Minor Flood: 42.0 Feet

Moderate Flood: 45.7 Feet

Major Flood: 46.7 Feet

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*	--	24.20	Feb 23, 2024
2023*	--	31.13	Mar 15, 2023
2022*	--	17.92	Jan 8, 2022
2021*	--	17.08	Mar 13, 2021
2020*	--	17.36	Jul 20, 2020
Historical High Stage/Flow Events (Period of Record - Jul 1921 to Present) - Ranked by Stage
1951	--	45.70**	Nov 21, 1950
1986*	--	43.40***	Feb 19, 1986****
1928	--	43.40	Mar 26, 1928
1997*	--	42.70	Jan 03, 1997*****
1963*	--	41.30	Feb 02, 1963
* Discharge affected by regulation or diversion
** Flood of record prior to Folsom Dam construction
*** Flood of record after Folsom Dam construction
**** Maximum Folsom Dam release of 130,000 cfs
***** Maximum Folsom Dam release of 115,000 cfs
****** Datum changed from NGVD29 to NAVD88 on 10/01/2016. The difference is -0.84 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
46.7 Feet	Stages above 46.7 feet result in flooding outside the levees. Top of levee.

Official 7 Day National Weather Service Forecast (CAZ017)

Tonight: Clear, cooler. Lows 49 to 55. South winds 10 to 15 mph with gusts to around 30 mph.

Friday: Sunny. Highs 76 to 84. South winds 10 to 15 mph. Gusts up to 30 mph in the afternoon.

Friday Night: Clear. Lows 49 to 55. West winds 10 to 15 mph with gusts to around 35 mph.

Saturday: Sunny. Highs 77 to 83. Northwest winds 10 to 20 mph with gusts to around 30 mph.

Saturday Night: Clear. Lows 54 to 62. Northwest winds 10 to 15 mph with gusts to around 30 mph.

Sunday: Sunny. Highs 83 to 89.

Sunday Night: Clear. Lows 52 to 60.

Monday: Sunny. Highs 87 to 93.

Monday Night: Mostly clear. Lows 53 to 60.

Tuesday through Thursday: Clear. Highs 88 to 98. Lows 53 to 63.

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.