CNRFC - Hydrology - Observed River/Reservoir Conditions

CLEAR LAKE - LAKEPORT (CLKC1)

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

Monitor Stage: 8.0 Feet

Flood Stage: 9.0 Feet

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

Historical Stage/Storage Data
Water Year	Peak Storage (Ac-ft)	Stage (feet)	Date
Most Recent 5 Years
2025*	351,900	8.40	Feb 16, 2025
2024*	352,800	8.42	Feb 23, 2024
2023*	344,400	8.23	Mar 22, 2023
2022*	7,360	0.55	Feb 13, 2022
2021*	49,100	1.23	Mar 24, 2021
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)

Today: Sunny. Highs 70 to 81.

Tonight: Partly cloudy. Lows 45 to 55.

Wednesday: Sunny. Highs 70 to 80.

Wednesday Night: Partly cloudy. Slight chance of rain showers. Lows 45 to 55.

Thursday: Mostly cloudy. Patchy valley fog. Chance of rain showers and isolated thunderstorms. Highs 62 to 73.

Thursday Night: Mostly cloudy. Chance of rain showers and isolated thunderstorms. Lows 43 to 53.

Friday: Mostly cloudy. Patchy valley fog. Chance of rain showers and isolated thunderstorms. Highs 60 to 70.

Friday Night through Saturday Night: Mostly cloudy. Chance of rain. Lows 40 to 50. Highs 58 to 70.

Sunday: Mostly cloudy. Chance of rain. Highs 54 to 64.

Sunday Night: Partly cloudy. Slight chance of rain. Lows 36 to 46.

Monday: Mostly sunny. Highs 60 to 70.

Flood Impacts
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.
9.0 Feet	Low lying structures and some main roads around the lake are threatened by the high lake levels.
8.5 Feet	Minor flooding of some lake side residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks.
8.5 Feet	Minor flooding of some lakeside residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks.
8.0 Feet	Minor flooding of some lakeside residents occurs.

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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