CNRFC - Hydrology - River Guidance - Graphical RVF

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:

Apr 30 2025 at 7:29 AM PDT

Next Issuance:

May 01 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. Lows 51 to 57. West winds up to 10 mph in the evening becoming light.

Thursday: Sunny. Highs 79 to 88. West winds up to 10 mph. Gusts up to 20 mph in the afternoon.

Thursday Night: Clear. Lows 48 to 54. Southwest winds up to 10 mph with gusts to around 20 mph.

Friday: Sunny. Highs 74 to 82. South winds up to 10 mph with gusts to around 20 mph.

Friday Night: Mostly clear in the evening then becoming mostly cloudy. Lows around 54. South winds 10 to 15 mph with gusts to around 25 mph.

Saturday: Partly cloudy with a slight chance of rain showers. Highs 65 to 71.

Saturday Night: Partly cloudy with a slight chance of rain showers. Lows 48 to 54.

Sunday and Sunday Night: Mostly clear. Highs 69 to 76. Lows 48 to 56.

Monday and Monday Night: Clear. Highs 76 to 83. Lows 50 to 56.

Tuesday: Mostly sunny. Highs 75 to 83.

Tuesday Night: Clear. Lows around 52.

Wednesday: Mostly sunny. Highs 76 to 83.

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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