The fate and effect of sodium chloride applied to Californian highways in the Lake Tahoe, Truckee River, and Yuba River watersheds were studied over a period of 14 months in 1974-75. rhloride levels in streams below major frceways were found to be elevated during the winter. The high chloride levels occurred after the Application of salt to roads, decreasing as the time from application mxeases. Small lakes receiving runoff from major highways were also cnrichcd with chloride. Several of these lakes displayed a temporary :hemocline, which was sufficiently strong to stabilize a temperature ;iivcrsion in one Inke.
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