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:

Oct 17 2021 at 7:38 AM PDT

Next Issuance:

Oct 18 2021 at 9:00 AM PDT

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/Flow Data
Water Year	Peak Storage (Ac-ft)	Stage (feet)	Date
Most Recent 5 Years
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
2016*	330,200	7.91	Mar 24, 2016
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 cloudy until late tonight then becoming partly cloudy. Rain showers in the evening, then slight chance of rain showers overnight. Lows 35 to 45. West wind around 20 mph in the evening.

Monday: Mostly sunny. Highs 53 to 64.

Monday Night: Partly cloudy. Lows 35 to 45.

Tuesday: Mostly sunny. Highs 55 to 66.

Tuesday Night and Wednesday: Rain showers. Lows 41 to 51. Highs 52 to 66. South wind around 20 mph.

Wednesday Night: Cloudy. Chance of rain showers. Lows 45 to 55.

Thursday and Thursday Night: Cloudy. Rain showers likely. Highs 58 to 68. Lows 46 to 56.

Friday: Mostly cloudy. Chance of rain showers. Highs 56 to 66.

Friday Night: Mostly cloudy. Slight chance of rain showers. Lows 40 to 50.

Saturday: Mostly cloudy. Chance of rain showers. Highs 54 to 64.

Saturday Night: Rain showers likely. Lows 43 to 53.

Sunday: Rain showers likely. Highs 53 to 63.

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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