Aqua dams stretch along the sidewalk atop the seawall at Lakeport's Library Park, helping keep the Clear Lake from swamping the park. Photo by Steve Stangland.

Clear Lake reached flood stage – 9 feet Rumsey – early Friday morning, and by early Sunday the lake was measured at 9.34 feet Rumsey, according to a US Geological Survey gauge.

In addition to the flood warning, the National Weather Service issued a hazardous weather outlook for the county based on forecasts of snow in higher elevations.

Clear Lake is at flood stage for the first time in 13 years.

The north softball field at Lakeside County Park in Lakeport, Calif., was underwater on Saturday, March 26, 2011. The bleachers and backstop can be seen just to the left of the big oak in the center of the shot. Photo by Philip Murphy.

The lake has pushed up over the seawall at Lakeport's Library Park, where the encroaching waters are being held back by aqua dams the city installed late last week. In Clearlake, Redbud Park's docks were partially swamped.

Elsewhere, creeks and streams are running high, and the rain filled up Boggs Lake.

Releases from Cache Creek Dam in the south county were at 3,860 cubic feet per second early Sunday, according to the US Geological Survey.

Clear Lake is forecast to hit 9.5 feet Rumsey by Monday morning, according to Lake County Water Resources.

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Clear Lake partially covers some of the docks at Redbud Park in Clearlake, Calif., on Saturday, March 26, 2011. Photo by Marty Paradzinski.

Canada Geese enjoying the newly filled Boggs Lake, located south of Kelseyville, Calif., on Saturday, March 26, 2011. Photo by Ed Oswalt.