Tuesday, 21 May 2024

Clear Lake officially 'full' after recent rains

LAKEPORT – At 6:15 a.m. Sunday, Clear Lake officially surpassed the “full” mark and continued to rise throughout the day as the low pressure system with heavy rains and strong winds moved across Lake County.


On Sunday morning, the US Geological Survey gauge for Clear Lake showed the lake's level at 7.57 feet Rumsey, the special measure used for Clear Lake.


A full lake is 7.56 feet Rumsey, according to Lake County's Water Resources Division.


Three months ago in January, the level of Clear Lake was less than 1.0 Rumsey, as previously reported, which means that Clear Lake, encompassing nearly 42,000 acres with 100 mile of shoreline, increased almost eight feet in depth since that time.


According to Lake County Water Resources, the Rumsey level is the natural level of Clear Lake which has been maintained by the Grigsby Riffle, a rock sill located at the confluence of Cache and Seigler Creeks near Lower Lake.


The natural low water level of Clear Lake was established as "Zero Rumsey" and all subsequent lake measurements are based on this elevation, which is equivalent to 1318.256 feet above sea level, according to the Lake County Water Resources Web site.


By 5 p.m. Sunday, Clear Lake had risen to 7.70 feet Rumsey according to the USGS gauge, although the rains had ended for the afternoon but more rain is forecast for overnight. It edged slightly higher before midnight.


The National Weather Service in Sacramento predicted more rain overnight with an 80 percent chance of rain Monday, and winds kicking back up throughout the day.


But the winds and rain will taper off in the evening, as the storm system moves out of Lake County, according to the National Weather Service's forecast.


Skies should clear somewhat, with the National Weather Service predicting high temperatures near 60 on Tuesday, with temperatures in the mid- to upper 30s at lake-level.


Partly cloudy skies with a small chance of rain will remain throughout the week, according to the National Weather Service, with highs below 60 and overnight temperatures remaining above the freezing mark at lower elevations.


For up-to-the-minute weather information, please visit the home page.


E-mail Terre Logsdon at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow Lake County News on Twitter at http://twitter.com/LakeCoNews and on Facebook at http://www.facebook.com/pages/Lake-County-News/143156775604?ref=mf .

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