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:

Feb 15 2019 at 2:57 PM PST

Next Issuance:

Feb 16 2019 at 9:00 AM PST

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
2017*	452,400	10.63	Feb 22, 2017
2016*	330,200	7.91	Mar 24, 2016
2015*	186,000	4.56	Feb 22, 2015
2014*	99,400	2.47	Apr 14, 2009
2013*	257,000	6.23	Apr 6, 2013
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 (CAZ064)

Tonight: Rain showers at lower elevations and and rain and snow showers at higher elevations. Lows 32 to 40. No snow accumulation lower elevations and 2 to 4 inches higher elevations. Snow level 3000 feet. Prevailing southwest winds 10 to 20 mph with gusts to around 40 mph.

Saturday: Mostly cloudy. At lower elevations, a chance of rain showers in the morning, then a chance of rain showers and a slight chance of thunderstorms in the afternoon. At higher elevations, rain and snow showers likely. Highs 34 to 44 higher elevations and 45 to 51 lower elevations. No snow accumulation lower elevations and up to 2 inches higher elevations. Snow level 3000 feet. Prevailing west winds 10 to 20 mph with gusts to around 40 mph.

Saturday Night: Partly cloudy. At lower elevations, a slight chance of rain showers in the evening, then a slight chance of rain and snow showers after midnight. At higher elevations, a slight chance of rain and snow showers in the evening, then a slight chance of snow showers after midnight. Lows 27 to 35. Snow level 2500 feet. Prevailing west winds up to 15 mph. Gusts up to 35 mph in the evening.

Sunday: Partly cloudy with a slight chance of rain and snow showers in the morning, then mostly cloudy with a chance of rain and snow showers in the afternoon. Highs 39 to 50. Snow level 1500 feet. Prevailing north winds up to 15 mph.

Sunday Night: Mostly clear. Lows 26 to 34. Prevailing north winds 5 to 15 mph with gusts to around 30 mph.

Washingtons Birthday: Sunny. Not as cool. Highs 44 to 56.

Monday Night: Mostly clear. Lows 27 to 35.

Tuesday: Mostly sunny. Highs 43 to 56.

Tuesday Night: Partly cloudy. Lows 30 to 36.

Wednesday through Thursday: Partly cloudy with a slight chance of rain and snow showers. Highs 40 to 53. Lows 27 to 36.

Thursday Night: Mostly clear. Lows 28 to 36.

Friday: Partly cloudy. Highs 41 to 53.

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 Sacramento 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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