CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

FEATHER RIVER - GRIDLEY (GRIC1)

Latitude: 39.37º N	Longitude: 121.65º W	Elevation: 92 Feet
Location: Butte County in California		Bulletin Group: Lower Sacramento		River Group: Feather Yuba

Issuance Time:

May 19 2025 at 7:45 AM PDT

Next Issuance:

May 20 2025 at 9:00 AM PDT

Action/Monitor: 94.0 Feet

Minor Flood: 103.0 Feet

Moderate Flood: 105.6 Feet

Major Flood: 106.6 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*	14,300	78.80	Feb 29, 2024
2023*	38,900	85.49	Mar 20, 2023
2022*	6,200	75.47	Mar 9, 2022
2021*	3,310	73.81	Jul 2, 2021
2020*	9,540	76.16	Oct 2, 2019
Historical High Stage/Flow Events (Period of Record - Mar 1929 to Present) - Ranked by Flow
1956	--	102.25**	Dec 23, 1955
1986*	--	100.06	Feb 19, 1986
1997*	--	98.83	Jan 2, 1997
2017*	129,000	96.37	Feb 14, 2017
1995*	89,434	94.66	Mar 12, 1995
2006*	76,964	91.97	Jan 3, 2006
* Discharge affected by regulation or diversion
** Peak stage before regulation by Oroville Dam began in 1967 (also old datum)
*** Datum difference is -2.9 ft and must be applied to data to convert from NGVD29 to NAVD88
**** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.7 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
106.5 Feet	Stages above 106.5 feet result in flooding outside the levees. Top of levee.
101.6 Feet	East bank overflows from Hamilton Bend to Four Corners and to near Hwy 40.
99.3 Feet	Water flows over Hwy 70 south of east Gridley Road.
97.5 Feet	General overflow of the east bank south of the gage to near Hwy 70 occurs. This floods extensive areas of farm land.
95.3 Feet	Overflow of the east bank begins east of Gridley. This water flows into orchards.

Official 7 Day National Weather Service Forecast (CAZ016)

Today: Sunny. Highs 85 to 90. North winds 10 to 15 mph.

Tonight: Clear. Lows 52 to 58. Northwest winds up to 10 mph with gusts to around 20 mph.

Tuesday: Sunny. Highs around 87. Northwest winds up to 10 mph with gusts to around 20 mph.

Tuesday Night: Clear. Lows 55 to 61. North winds up to 10 mph.

Wednesday: Sunny. Highs 89 to 95. Northwest winds around 10 mph with gusts to around 20 mph.

Wednesday Night: Clear. Lows around 59.

Thursday: Sunny. Highs 86 to 91.

Thursday Night and Friday: Clear. Lows around 55. Highs 83 to 91.

Friday Night: Mostly clear. Lows around 55.

Saturday: Sunny. Highs 82 to 87.

Saturday Night and Sunday: Mostly clear. Lows around 56. Highs 82 to 91.

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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