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Federal
Change in Permafrost Temperatures in Alaska, 1978-2023
U.S. Environmental Protection Agency —
This map shows the change in permafrost temperature per decade for long-term borehole sites in Alaska. As the circles get larger, the rate of warming per decade... -
Federal
Heating and Cooling Degree Day by State, 1960–2023 Versus 1895–1959
U.S. Environmental Protection Agency —
This indicator shows how heating and cooling degree days have changed by state, based on a comparison of the first 65 years of available data (1895–1959) with the... -
Federal
Streamflow in the United States, 1940–2022
U.S. Environmental Protection Agency —
This map shows percentage changes in the minimum annual rate of water carried by rivers and streams across the country, based on the long-term rate of change from... -
Federal
Change in Growing Degree Days in the Contiguous 48 States, 1948–2020
U.S. Environmental Protection Agency —
This map shows trends in the total number of growing degree days per year at 305 weather stations . The color and size of the symbols represent percent change between... -
Federal
U.S. Level III and IV Ecoregions (U.S. EPA)
U.S. Environmental Protection Agency —
This map service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the U.S. Environmental Protection... -
Federal
Average Rate of Heat-Related Hospitalizations in 23 States, 2001-2010
U.S. Environmental Protection Agency —
This map shows the 2001–2010 average rate of hospitalizations classified as “heat-related” by medical professionals in 23 states that participate in CDC’s...