Lake Tahoe’s clear waters are benefiting from a record-breaking effort to reduce pollution, according to a new report from California and Nevada. The report by the Lahontan Regional Water Quality Control Board found that an estimated 727,000 pounds of fine sediment; more than 5,800 pounds of nitrogen; and nearly 2,100 pounds of phosphorus were prevented from reaching the lake in 2024 — all annual record highs since the program began tracking these statistics in 2016. These pollutants can fuel algae growth and harm the lake’s clarity.

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