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 Mean Daily Stage/Storage Data
Water Year	Peak Storage (Ac-ft)	Stage (feet)	Date
Most Recent 5 Years
2025*	349,706	8.35	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)

Tonight: Mostly clear. Lows 21 to 31.

Friday: Partly cloudy in the morning then becoming mostly cloudy. Patchy valley fog in the morning. Highs 42 to 52.

Friday Night: Mostly cloudy. Slight chance of rain and snow through the night. Snow level 2000 to 2500 feet. Lows 27 to 37. Southeast wind around 20 mph in the valleys and southeast 20 to 30 mph at higher elevation.

Saturday: Mostly cloudy. Chance of rain and snow. Snow level 3000 feet in the morning. Highs 45 to 55. Southeast wind around 20 mph with gusts at higher elevations to around 35 mph.

Saturday Night: Mostly cloudy. Windy. Rain likely. Lows 35 to 45. Southeast wind 20 to 30 mph with gusts at higher elevations to around 45 mph.

Sunday: Windy, rain. Highs 51 to 61. South wind 20 to 30 mph with gusts at higher elevations to around 45 mph.

Sunday Night: Rain likely. Lows 43 to 53.

Monday: Rain. Highs 54 to 64.

Monday Night and Tuesday: Rain. Lows 43 to 53. Highs 52 to 64.

Tuesday Night: Rain likely. Lows 39 to 49.

Wednesday through Thursday: Mostly cloudy. Chance of rain. Highs 54 to 66. Lows 39 to 49.

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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