CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SACRAMENTO RIVER - MOULTON WEIR (CLSC1)

Latitude: 39.34º N	Longitude: 122.02º W	Elevation: 76 Feet
Location: Colusa County in California		Bulletin Group: Upper Sacramento		River Group: Upper Sacramento

Issuance Time:

Sep 21 2023 at 7:50 AM PDT

Next Issuance:

Sep 22 2023 at 9:00 AM PDT

Monitor Stage: 76.2 Feet

Flood Stage: 83.8 Feet

Danger Stage: 84.8 Feet

Plot Type:

Moulton Weir Location - Sacramento River Channel Stage/Flow (Estimated)

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2022*	0****	--	--
2021*	0****	--	--
2020*	0****	--	--
2019*	8,410	79.75	Mar 1, 2019
2018*	0****	--	--
Historical High Stage/Flow Events (Period of Record - Jan 1931 to Present)** - Ranked by Flow
1942	53,900	83.80	Feb 7, 1942
1958*	45,300	84.65***	Feb 20, 1958
1958*	44,200	84.62***	Feb 26, 1958
1983*	35,300	83.71	Mar 3, 1983
1956*	29,900	83.15	Jan 16, 1956
* Discharge affected by regulation or diversion
** Peak flow before regulation by Shasta Dam began in 1943
*** Old datum. The difference is -2.85 ft and must be applied to data to convert from NGVD29 to NAVD88
**** No weir flow observed during the entire water year
***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.6 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

Impacts - E19 Information
76.2 Feet	Moulton Weir crest elevation. Overflow begins into Butte Sink. River Road is flooded and closed.
88.6 Feet	Stages above 88.6 feet result in major flooding of areas outside the levees. Top of levee.

Official 7 Day National Weather Service Forecast (CAZ016)

Today: Sunny. Highs around 80. Northwest winds 10 to 20 mph with gusts to around 35 mph.

Tonight: Clear, cooler. Lows 48 to 56. Northwest winds around 10 mph shifting to the northeast up to 10 mph after midnight. Gusts up to 20 mph.

Friday: Sunny. Highs around 80. North winds up to 10 mph shifting to the northwest around 10 mph in the afternoon.

Friday Night: Clear. Lows 48 to 57. Southeast winds up to 10 mph.

Saturday: Sunny. Highs around 80. East winds up to 10 mph shifting to the south around 10 mph in the afternoon.

Saturday Night: Mostly clear. Lows 50 to 57.

Sunday: Mostly cloudy. Highs around 78.

Sunday Night: Partly cloudy. Lows 52 to 58.

Monday: Mostly cloudy with a slight chance of rain showers. Highs around 74.

Monday Night and Tuesday: Mostly cloudy with a chance of rain showers. Lows 52 to 60. Highs around 74.

Tuesday Night and Wednesday: Mostly clear. Lows 51 to 56. Highs around 76.

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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