"LAKE TAHOE, Calif. -- Today, for the first time since 1997, the governors of both California and Nevada attended the annual Lake Tahoe Summit, and they pledged their cooperation in returning clarity to the clouded waters of the famous lake."

"By personally attending the summit and bringing top officials from both states to the same table, the two governors are making Lake Tahoe a top priority and seeking greater cooperation on issues affecting the lake shared by their two states.

At California's Homewood Mountain Resort, California Governor Jerry Brown, a Democrat, and Nevada Governor Brian Sandoval, a Republican, signed an agreement to return clarity to the lake to a depth of 100 feet within 65 years.

The water clarity of Lake Tahoe declined from a visibility level of 105 feet in 1967 to an all time low of 64 feet in 1997. Ten years of scientific study has determined that fine particulate matter is the prime reason for the impaired clarity of the lake. "

Environment News Service had the story August 16, 2011. [2]