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Federal
US EPA Nonattainment Areas and Designations
U.S. Environmental Protection Agency —
This web service contains the following state level layers:Ozone 8-hr (1997 standard), Ozone 8-hr (2008 standard), Lead (2008 standard), SO2 1-hr (2010 standard),... -
Federal
EPA Sole Source Aquifers
U.S. Environmental Protection Agency —
Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level. A national... -
Federal
EnviroAtlas - Estimated floodplain map for the Conterminous United States
U.S. Environmental Protection Agency —
Understanding the relationship between flood inundation and floodplains is critical for ecosystem and community health and well-being, as well as targeting floodplain... -
Federal
EnviroAtlas - 303(d) Impairments by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset depicts the total length of stream or river flowlines that have impairments submitted to the EPA by states under section 303(d) of the Clean... -
Federal
EnviroAtlas Estimated Percent Green Space Along Walkable Roads Web Service
U.S. Environmental Protection Agency —
This EnviroAtlas dataset estimates green space along walkable roads. Green space within 25 meters of the road centerline is included and the percentage is based on... -
Federal
Heat Wave Characteristics in 50 Large U.S. Cities, 1961–2023
U.S. Environmental Protection Agency —
These maps show changes in the number of heat waves per year (frequency); the average length of heat waves in days (duration); the number of days between the first... -
Federal
EnviroAtlas - Public outdoor recreation areas availability and accessibility for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas map estimates the accessibility and availability of public outdoor recreational areas (e.g., urban parks, national forests) within 800m along... -
Federal
EnviroAtlas - Selected National Air Toxics Assessment Results by Census Tract - 2014
U.S. Environmental Protection Agency —
These layers are a selection of the National Air Toxics Assessment (NATA) 2014 estimates of ambient concentrations and health-effect results by 2010 U.S. Census... -
Federal
EnviroAtlas - 2011 Land Cover, Impervious Surface, and Riparian Land Cover Proportions by County for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents land cover across a county and in riparian areas for each county in the conterminous United States for use in the Compare my Area... -
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
EnviroAtlas - Memphis, TN - Tree Cover Configuration and Connectivity, Water Background
U.S. Environmental Protection Agency —
This EnviroAtlas dataset categorizes forest land cover into structural elements (e.g. core, edge, connector, etc.). Forest is defined as Trees & Forest and Woody... -
Federal
Mandatory Class 1 Federal Areas Web Service
U.S. Environmental Protection Agency —
This web service contains the following layers: Mandatory Class 1 Federal Area polygons and Mandatory Class 1 Federal Area labels in the United States. The polygon... -
Federal
Cleanups In My Community (CIMC) - Brownfields Properties, National Layer
U.S. Environmental Protection Agency —
This data layer provides access to Brownfields Properties as part of the CIMC web service, although the data are generally more broadly applicable. Brownfields are... -
Federal
EnviroAtlas - Baltimore, MD - Estimated Percent Green Space Along Walkable Roads
U.S. Environmental Protection Agency —
This EnviroAtlas dataset estimates green space along walkable roads. Green space within 25 meters of the road centerline is included and the percentage is based on... -
Federal
EnviroAtlas - St. Louis, MO - Impervious Proximity Gradient
U.S. Environmental Protection Agency —
In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of impervious surface within 1 square kilometer centered over the... -
Federal
EnviroAtlas - Fruit and vegetable crops by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset includes data on the area, yield, and number of fruit and vegetable crops grown per 12-digit Hydrologic Unit (HUC) in the conterminous USA.... -
Federal
EnviroAtlas - Austin, TX - Estimated Percent Green Space Along Walkable Roads
U.S. Environmental Protection Agency —
This EnviroAtlas dataset estimates green space along walkable roads. Green space within 25 meters of the road centerline is included and the percentage is based on... -
Federal
EnviroAtlas - Phoenix, AZ - Tree Cover Configuration and Connectivity, Water Background
U.S. Environmental Protection Agency —
This EnviroAtlas dataset categorizes forest land cover into structural elements (e.g. core, edge, connector, etc.). In this community, forest is only trees &... -
Federal
EPA RCRA Corrective Action Boundary Data, U.S. EPA Regional Offices
U.S. Environmental Protection Agency —
This GIS dataset contains polygons depicting RCRA Corrective Action boundary features from all EPA Regions. The Resource Conservation and Recovery Act (RCRA), among... -
Federal
EnviroAtlas - San Diego, CA - Impervious Proximity Gradient
U.S. Environmental Protection Agency —
In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of impervious surface within 1 square kilometer centered over the...