CNRFC - Hydrology - River Guidance - Graphical RVF

FEATHER RIVER - GRIDLEY (GRIC1)

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

Issuance Time:

Aug 01 2021 at 7:18 AM PDT

Next Issuance:

Aug 02 2021 at 9:00 AM PDT

Monitor Stage: 94.0 Feet

Flood Stage: 103.0 Feet

Danger Stage: 104.0 Feet

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
2020*	9,540	76.16	Oct 2, 2019
2019*	24,900	82.90	Apr 7, 2019
2018*	14,200	79.49	Apr 7, 2018
2017*	129,000	96.37	Feb 14, 2017
2016*	10,912	78.37	Jun 29, 2016
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

Official 7 Day National Weather Service Forecast (CAZ016)

Tonight: Clear. Lows 58 to 68. Southeast winds 10 to 15 mph.

Monday: Sunny. Highs around 95. South winds up to 10 mph.

Monday Night: Partly cloudy. Lows 59 to 69. Southeast winds up to 10 mph.

Tuesday: Mostly sunny. Highs around 99. South winds up to 10 mph.

Tuesday Night: Clear. Lows 57 to 67. South winds 10 to 15 mph.

Wednesday: Sunny. Highs around 95.

Wednesday Night: Clear, cooler. Lows 52 to 62.

Thursday through Sunday: Clear. Highs around 94. Lows 56 to 66.

Impacts - E19 Information
95.3 Feet	Overflow of the east bank begins east of Gridley. This water flows into orchards.
97.5 Feet	General overflow of the east bank south of the gage to near Highway 70 occurs. This floods extensive areas of farm land.
99.3 Feet	Water flows over Highway 70 south of East Gridley Road.
101.6 Feet	East bank overflows from Hamilton Bend to Four Corners and to near Highway 40.
106.5 Feet	Stages above 106.5 feet result in flooding outside the levees. Top of levee.

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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