klamath weekly water report 070711

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Weekly water report

Herald and News July 7, 2011

The elevation of Upper Klamath Lake was 4,142 feet on Wednesday.

The lake exceeded a biological opinion minimum requiring it be at 4,140.5 feet by the end of June.

By the end of July the lake level must be at least 4,139.3 feet.

The A Canal was flowing at a rate of 816 cubic feet per second (cfs) on Monday, the most recent data available.

On Wednesday, the Williamson River was flowing at a rate of 936 cfs, which is 144 percent of the long term average for the date.

Clear Lake’s elevation was 4,528.73 feet on Thursday, the most recent data available, with 179,910 acre-feet of storage.

Gerber Reservoir’s elevation was 4,828.26 feet Thursday, with 68,384 acre-feet of storage.

The National Weather Service is reporting that since Sept. 30, the end of the 2010 water year, Klamath Falls has received 10.36 inches of precipitation, which is 94 percent of the historical average.