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Federal
Average Temperatures in the Southwestern United States, 2000–2020 Versus Long-Term Average recent views
U.S. Environmental Protection Agency —
This indicator shows how the average air temperature from 2000 to 2020 has differed from the long-term average (1895 - 2020). To provide more detailed information,... -
Federal
Change in the Magnitude of River Flooding in the United States, 1965-2015 recent views
U.S. Environmental Protection Agency —
This figure shows changes in the size and frequency of flooding events in rivers and streams in the United States between 1965 and 2015. Blue upward-pointing symbols... -
Federal
Streamflow in the United States, 1940–2022 recent views
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 Ragweed Pollen Season, 1995-2015 recent views
U.S. Environmental Protection Agency —
This figure shows how the length of ragweed pollen season changed at 11 locations in the central United States and Canada between 1995 and 2015. Data were provided by... -
Federal
Changes in Stream Water Temperatures in the Chesapeake Bay Region, 1960-2014 recent views
U.S. Environmental Protection Agency —
This map shows the changes in stream water temperatures in the Chesapeake Bay region from 1960 to 2014. Blue circles represent cooling trends in stream water...