Lake Lahontan

ancient lake, North America

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June 30, 2026

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Lake Lahontan was a vast ancient lake that covered much of present-day western Nevada and extended into California during the Pleistocene epoch, due to increased rainfall. Pyramid Lake is a remnant of this ancient body of water. The lake's formation dates back to the Pleistocene Epoch, approximately 2.6 million to 11,700 years ago.12

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North America
Lakes of North America
…rise to the enormous Lakes Lahontan and Bonneville. The Great Salt Lake is a relic of Lake Bonneville, the ancient strandlines of which are up to 1,000 feet (300 meters) above the present shoreline. Similarly, present-day Lake Chapala in Mexico represents only a small portion of the large body of…
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…rise to the enormous Lakes Lahontan and Bonneville. The Great Salt Lake is a relic of Lake Bonneville, the ancient strandlines of which are up to 1,000 feet (300 meters) above the present shoreline. Similarly, present-day Lake Chapala in Mexico represents only a small portion of the large body of…
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Holocene Epoch
Holocene climatic trends and chronology
…America, notably Lake Bonneville and Lake Lahontan (enormous ancestors of present-day Great Salt Lake and Pyramid Lake). Two peaks of lake levels were reached at about 12,000 ± 500 bp (the beginning of the Allerød Warm stage) and approximately 9000 ± 500 bp (the early Boreal Warm stage). At Lake…
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…America, notably Lake Bonneville and Lake Lahontan (enormous ancestors of present-day Great Salt Lake and Pyramid Lake). Two peaks of lake levels were reached at about 12,000 ± 500 bp (the beginning of the Allerød Warm stage) and approximately 9000 ± 500 bp (the early Boreal Warm stage). At Lake…
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