Stale — older than 1 week USGS

W.Fk Lafferty Gulch Cr Abv S.Well At Mt. Rushmore

Updated April 22, 2025 at 09:00:00 PM · Provisional · Site 435300103270800

Current conditions

Historical trends

Hourly measurements

Detailed readings by hour, organized by day

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Official USGS page: https://waterdata.usgs.gov/monitoring-location/USGS-435300103270800/ (may include cooperator information)