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Change in Ice Thaw Dates for Selected U.S. Lakes, 1905-2019

Published by U.S. EPA Office of Air and Radiation (OAR) - Office of Atmospheric Programs (OAP) | U.S. Environmental Protection Agency | Catalog Last Checked: May 26, 2026 at 04:12 PM | Dataset Last Updated: August 02, 2016 at 12:00 AM
This figure shows the change in the "ice-off" date, or date of ice thawing and breakup, for 14 U.S. lakes during the period from 1905 to 2019. All of the lakes have red circles with negative numbers, which represent earlier thaw dates. Larger circles indicate larger changes. For more information: www.epa.gov/climatechange/science/indicators

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