Glossary
USGS
The U.S. Geological Survey (USGS) collects and publishes inland water observations—streamgages, lake levels, and related datasets—that feed many third-party lake apps and research products.
Published May 16, 2026 · Editorial standards
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Watts Bar Lake
/lakes/wattsbar
Explore Watts Bar Lake for live levels, pool context, and lake intelligence on Lake Insights. Published levels use MSL unless the lake page notes otherwise.
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Cypress Lake
/lakes/cypress-lake
Explore Cypress Lake for live levels, pool context, and lake intelligence on Lake Insights. Published levels use NGVD29 relative to MSL unless the lake page notes otherwise.
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Lake Havasu
Reference information only. See data sources, editorial standards, or suggest a correction.

