STUDY: Lake Tahoe Water Clarity BEST in 10+ Years: Lake Tahoe water clarity hit it’s best point since 2002 at 77.8-feet of clarity. That’s a 7.5-feet improvement in clarity from last year and a huge improvement of the lowest ever recording of 64.1-feet in 1997. The best clarity measurement for Tahoe was 102.4-feet in 1968. They acquire this measurement by dropping a 10-inch diameter white disk and sinking it until it is no longer visible. The last depth the disk is visible is the depth they use as the clarity measurement. Researchers actually got one reading this past July […] SnowBrains | April 8, 2015 0 Comments