CNRFC - Hydrology - River Guidance - Graphical RVF

CLEAR LAKE - LAKEPORT (CLKC1)

Latitude: 39.04º N	Longitude: 122.91º W	Elevation: 1318 Feet
Location: Lake County in California		River Group: Lower Sacramento

Issuance Time:

Mar 20 2023 at 2:42 PM PDT

Next Issuance:

Mar 21 2023 at 9:00 AM PDT

Monitor Stage: 8.0 Feet

Flood Stage: 9.0 Feet

Plot Type:

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View USGS Data for this station location.

Historical Stage/Flow Data
Water Year	Peak Storage (Ac-ft)	Stage (feet)	Date
Most Recent 5 Years
2021*	49,100	1.23	Mar 24, 2016
2020*	191,900	4.70	Apr 16, 2020
2019*	421,900	9.96	Mar 2, 2019
2018*	207,100	5.06	Apr 24, 2018
2017*	452,400	10.63	Feb 22, 2017
Historical High Stage/Flow Events (Period of Record - Oct 1984 to Present)**
1998	--	11.44	Feb 24, 1998
1986	480,900	11.34	Feb 2, 1986
1983	485,400	11.34	Jan 3, 1983
1914	471,800	11.09	Jan 28, 1914

* Data for the most recent 5 years utilizes mean daily values rather than instantaneous values
** Most recent continuous record back to Oct 1984 with segmented periods back to 1874

Location Photographs
Left of Gage Photo	Gage House Photo	Right of Gage Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ115)

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Chance of rain showers overnight. Snow level 3000 to 3500 feet. Lows 33 to 43.

Tuesday: Snow showers in the morning. Rain showers through the day. Snow level 3000 feet. Snow accumulations up to 2 inches. Highs 40 to 51. Northeast wind around 20 mph.

Tuesday Night: Mostly cloudy. Rain showers likely in the evening, then chance of rain showers overnight. Lows 34 to 44.

Wednesday: Mostly cloudy. Chance of rain showers. Highs 46 to 56.

Wednesday Night: Mostly cloudy. Slight chance of rain showers. Lows 33 to 43.

Thursday: Partly cloudy. Slight chance of rain showers. Snow level 3000 to 3500 feet. Highs 48 to 60.

Thursday Night through Friday Night: Partly cloudy. Lows 29 to 39. Highs 47 to 60.

Saturday and Saturday Night: Mostly clear. Highs 48 to 58. Lows 28 to 38.

Sunday: Mostly sunny in the morning then becoming mostly cloudy. Chance of rain and snow. Highs 46 to 57.

Sunday Night: Mostly cloudy. Chance of rain and snow. Lows 31 to 41.

Monday: Rain and snow likely. Highs 41 to 52.

Impacts - E19 Information
8.5 Feet	Minor flooding of some lake side residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks.
9.0 Feet	Low lying structures and some main roads around the lake are threatened by the high lake levels.
11.0 Feet	Major flooding occurs all around the north end of the lake, especially in Lakeport and Clearlake Oaks. Highway 20 around the north end of the lake is closed in some areas.

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 Eureka 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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