UC Davis Tahoe Environmental Research Center Releases 2025 Lake Tahoe Clarity Report

By Kat Kerlin

Lake Tahoe, Calif./Nev. – Staring into the depths of Lake Tahoe, you might think the view goes on forever. But researchers at the UC Davis Tahoe Environmental Research Center have been tracking precisely how far a person can see through the famed lake’s waters for nearly 60 years and sharing the results in the annual Lake Tahoe Clarity Report.

The 2025 Lake Tahoe Clarity Report, released today, shows that the annual average clarity remains at a plateau, neither significantly improving nor declining compared to previous years. The annual average was 69.2 feet in 2025. That is 7 feet clearer than last year’s average of 62.3 feet, but not statistically different from recent years, mostly due to a continuing trend of relatively low clarity during summer.

Read more at Tahoe.UCDavis.edu.

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Photo by Thea Schwartz