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This probabilistic forecast is issued by the California Nevada River Forecast Center.
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About this graph
Forecasts for the Clear Lake at Lakeport are issued routinely year-round.
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Zoom Level:15
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11.9
Flood Stage: 9
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 11.51 ft on 02/24/1998
(2) 11.34 ft on 01/03/1983
(3) 11.34 ft on 02/02/1986
(4) 11.09 ft on 01/28/1914
(5) 10.63 ft on 02/22/2017
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(P): Preliminary values subject to further review.

Recent Crests
(1) 8.47 ft on 03/21/2023 (P)
(2) 9.96 ft on 03/02/2019
(3) 5.07 ft on 04/20/2018
(4) 10.63 ft on 02/22/2017
(5) 8.60 ft on 01/25/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
11 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 Low lying structures and some main roads around the lake are threatened by the high lake levels.
8.5 Minor flooding of some lake side residents occurs. More buildings are threatened from Lakeport to Clearlake Oaks.

Other Real-time and/or Archive Data Sources:

Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Eureka Weather Forecast Office
300 Startare Drive
Eureka, CA 95501
(707) 443-6484
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Page last modified: 2-Nov-2020 7:27 PM
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