WATCH: In the last five months of 2022, the beloved alpine lake on the California-Nevada border was the clearest it's been since the 1980s.
It appears the push to keep Lake Tahoe blue is working.
In the last five months of 2022, the beloved alpine lake on the California-Nevada border was the clearest it's been since the 1980s, theTERC credited a native zooplankton resurgence for the lake's improved clarity. The zooplankton act as a natural cleanup squad, helping to enhance Tahoe's renowned blue water.
According to TERC, the lake's average annual water clarity in 2022 was 71.7 feet, compared to 61 feet the year prior. Between August and December 2022, average clarity depth improved to 80.6 feet.Sign up for NBC San Diego newsletters. The improvement in the final months of 2022 coincided with the highest numbers of zooplankton Daphnia and Bosmina, TERC said.
"Daphnia and Bosmina largely disappeared from the lake after they were grazed down following the introduction of the Mysis shrimp in the 1960s," TERC Director Geoffrey Schladow said in a statement."In late 2021, the Mysis population unexpectedly crashed, and it took 12 months for the Daphnia and Bosmina to build up their numbers and start their natural cleansing."
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