Why is Lake Tahoe drying up?

The receding water level, which is driven by climate change and drought, comes as the latest insult to the treasured tourist destination nestled in the Sierra Nevada. Its waters have already been clouded by smoke and ash from multiple wildfires this summer. Lake Tahoe's water level is always fluctuating.



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In 2017, the lake was filled to the maximum limit after years of ongoing drought. According to U.S. Geological Survey data, this is something that is possible again for 2023, which can bring potential threats to Tahoe's landscape.

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Lake Tahoe suffers from increased loads of fine sediment and dissolved nutrients. The nutrient inflows, mostly phosphorus and nitrogen, are literally fertilizers, which support the growth of free-floating and attached algae.

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First of all, Lake Tahoe's only natural outlet, the Truckee River, carries water into Nevada, not California, where it terminates at Pyramid Lake. This means there are no legal water rights to use Tahoe water in California, aside from a few local uses along the river's path to Nevada.

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Lake Tahoe is the largest freshwater lake in the Sierra Nevada and the largest alpine lake in North America. At 122,160,280 acre feet, only the five Great Lakes are larger by volume. Lake Tahoe's deepest point is 1,645 feet, making it the second-deepest in the United States after Crater Lake in Oregon.

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While past years have seen some declines in Lake Tahoe's water clarity, the TMDL Program has helped stabilize these levels. In 2022, Lake Tahoe's water clarity was measured at a depth of 72 feet – almost 11 feet deeper than the 2021 recording.

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The water in Lake Tahoe is of excellent quality, and our community treatment plants are designed to remove or inactivate microorganisms, meeting exacting standards .

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Now, researchers report that Tahoe is the clearest it's been in 40 years—and it's thanks to tiny zooplankton that gobble up the particles that make the water cloudy.

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North Lake Tahoe and Truckee are amazing locations for investment purposes, with a wealth of activities in both summer and winter, this is an area that's appealing for an active and relaxing get away, for beach lovers and skiers, for adventure and romantic vacations.

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Uncovered and exposed: Secrets of pristine Lake Tahoe
  • There is a nude beach (and you can drink on the beach legally)
  • Most of the ski terrain is hidden in the backcountry.
  • There's a better way to access Tahoe's amazing historic sites.
  • A Frank Sinatra overdose helped put Tahoe on the map.
  • Tahoe isn't the only lake in town.


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Glenbrook. This historic gated community—one of the first Lake Tahoe area settlements—has 300 houses on 750 acres, of which only 150 acres are developed.

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Despite the copious amounts of snow and persistent cold, Lake Tahoe remains sparkling blue and largely free of any ice cover, with the exception of marinas along the shore. Experts say it won't freeze this year and likely never has in human memory. That's because Lake Tahoe is deep — very deep.

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The research team says the lake's native zooplankton, which recently surged in population, is responsible for the change. The microscopic animal helps keep the lake clear by eating tiny particles that make the water cloudy.

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Compared to other lakes, Tahoe's cast of aquatic characters is fairly small. Among those you can see with the naked eye, there are several species of trout (rainbow, brook, brown and lake), the Kokanee salmon, crayfish, mysis shrimp, and a few other near-shore and bottom-dwelling fish.

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