National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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CLEAR LAKE - LAKEPORT (CLKC1)
Latitude: 39.04º NLongitude: 122.91º WElevation: 1318 Feet
Location: Lake County in CaliforniaRiver Group: Lower Sacramento
Issuance Time: Mar 20 2023 at 2:42 PM PDTNext Issuance: Mar 21 2023 at 9:00 AM PDT
Monitor Stage: 8.0 FeetFlood Stage: 9.0 Feet

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

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
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
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 FeetMinor flooding of some lake side residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks.
9.0 FeetLow lying structures and some main roads around the lake are threatened by the high lake levels.
11.0 FeetMajor 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.