NEPAssist Mapping Layer Descriptions:

The below provides basic descriptions for the data included in the mapping layers available through NEPAssist. Be sure to use the appropriate metadata (data layer title, source and date) when citing the source of your supporting data.

EPA Facilities

EJScreen Indexes (2024)

Water Monitors

Places

Transportation

Water Features

Non-attainment Areas

Boundaries

Demographics Data

Critical Habitat

NWI Wetlands

FEMA Flood

Land Cover

Habitat Data

EPA Facilities

The below includes information EPA collects through various databases about facilities or sites subject to environmental regulation.

Hazardous Waste (RCRAInfo)

Description: Hazardous waste information contained in the Resource Conservation and Recovery Act Information (RCRAInfo) includes an inventory on all generators, transporters, treaters, storers, and disposers of hazardous waste that are required to provide information about their activities.

Source: EPA's Envirofacts

Date: Refer to the Envirofacts Data Update for RCRAInfo

Air Pollution (ICIS-AIR)

Description: The air pollution data (ICIS-AIR) contains compliance and permit data for stationary sources of air pollution (such as electric power plants, steel mills, factories, and universities) regulated by EPA, state and local air pollution agencies. The information in ICIS-AIR is used by the states to prepare State Implementation Plans (SIPs) and to track the compliance status of point sources with various regulatory programs under Clean Air Act.

Source: EPA's Envirofacts

Date: Refer to the Envirofacts Data Update for ICIS-AIR

Water Dischargers (NPDES)

Description: As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution by regulating sources, such as municipal and industrial wastewater treatment facilities, that discharge pollutants into waters of the United States. EPA tracks water discharge permits through the Permit Compliance System (PCS) and Integrated Compliance Information System (ICIS) databases, which includes information on when a permit was issued and when it expires, how much the company is permitted to discharge, and the actual monitoring data showing what the company has discharged.

Source: EPA's Envirofacts

Date: Refer to the Envirofacts Data Update for NPDES

Toxic Releases (TRI)

Description: The Toxics Release Inventory (TRI) contains information on toxic chemical releases and waste management activities reported annually by certain industries as well as federal facilities. The database also contains links to compliance and enforcement information.

Source: EPA's Envirofacts

Date: Refer to the Envirofacts Data Update for TRI

Superfund (NPL)

Description: The Superfund Enterprise Management System (SEMS) provides information regarding sites under the Comprehensive Environmental Response, Compensation, and Liability Act -- otherwise known as CERCLA or Superfund. CERCLA provides a Federal "Superfund" to locate, investigate, and clean up uncontrolled or abandoned hazardous-waste sites as well as accidents, spills, and other emergency releases of pollutants and contaminants into the environment. Sites on the National Priorities List (NPL) is the list of sites of national priority among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories. Sites on the Superfund Alternative Approach (SAA) list use the same investigation and cleanup process and standards that are used for sites listed on the NPL. Currently, sites with SAA agreements are a small subset of all Superfund cleanup agreements.

This dataset is composed of both the proposed and final NPL sites and SAA sites and contains the Superfund Site boundaries. Site boundaries are polygons representing the footprint of a whole site, defined for purposes of this effort as the sum of all of the Operable Units and the current understanding of the full extent of contamination. This dataset was initially created for EJScreen based on the downloaded data on 2/26/2024.

Source: EPA's NPL

Date: 2/26/2024

Brownfields (ACRES)

Description: The Assessment, Cleanup and Redevelopment Exchange System (ACRES) captures grantee reported data on environmental activities and accomplishments (assessment, cleanup and redevelopment), funding, job training, and details on cooperative partners and leveraging efforts for the Brownfields Program. The information in ACRES is provided at the property and grant level.

Source: EPA's Envirofacts

Date: Refer to Envirofacts Data Update for ACRES

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EJ Indexes (2024)

The EJScreen indexes are a combination of environmental and socioeconomic information. For example, the EJScreen index for traffic is a combination of the traffic indicator, the low-income population, and the people of color population. There are thirteen EJ indexes in EJScreen reflecting the 13 environmental indicators listed below.

EJScreen Index = (Percentile of Environmental Indicator) * (Demographic Index)

whereas the Demographic Index is an average of two individual Z-score values of percent low income and percent people of color.

Demographic Index = (% low income + % people of color) / 2

Note that an EJScreen index does not combine various environmental factors into a cumulative score--each environmental indicator has its own EJScreen index at Census block group level. The EJ index is higher in block groups with large numbers of mainly low-income and/or people of color residents with a higher environmental indicator value.

Particulate Matter 2.5 (PM2.5)

Description: The environmental burden indicator for PM2.5 measures the potential exposure to inhalable particles 2.5 microns or smaller (about 30 times smaller than the width of human hair) in terms of annual average concentration in micrograms per cubic meter (µg/m3). EJScreen presents PM2.5 concentrations using percentile rank, ranging from 0 (lowest) to 100 (highest). This indicator does not designate compliance with the national ambient air quality standard for PM2.5.

For more details on the PM2.5 indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for PM2.5.

Source: EPA’s Office of Air and Radiation.

Date: 2020

Ozone

Description: The environmental burden indicator for ozone measures how much ground-level ozone people might be exposed to by looking at the highest levels of ozone recorded at the ground-level and averaging the top ten days of the year. Ozone concentrations were measured as daily maximum eight-hour averages. EJScreen presents ground-level ozone concentrations using percentile rank, ranging from 0 (lowest) to 100 (highest). This indicator does not designate compliance with the national ambient air quality standard for ozone.

For more details on the ozone indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Ozone.

Source: EPA’s Office of Air and Radiation.

Date: 2020

Nitrogen Dioxide (NO2)

Description: The environmental burden indicator for NO2 measures how much surface level NO2 people might be exposed to in terms of annual average concentration in parts per billion. EJScreen presents surface level NO2 concentrations using percentile rank, ranging from 0 (lowest) to 100 (highest). This indicator does not designate compliance with the national ambient air quality standard for NO2.

For more details on the NO2 indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for NO2.

Source: Goddard Earth Sciences Data and Information Services Center.

Date: 2020

Diesel Particulate Matter

Description: The environmental burden indicator for diesel PM measures how much diesel PM (a mixture of particles from diesel exhaust) people might be exposed to in terms of micrograms per cubic meter (µg/m3). EJScreen presents diesel PM concentrations using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the diesel PM indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Diesel PM.

Source: EPA’s Air Toxics Screening Assessment.

Date: 2020

Toxic Releases to Air

Description: The environmental burden indicator for toxic releases to air measures the average annual chemical concentrations in air weighted by the toxicity of each chemical. This indicator includes chemicals covered by EPA’s Toxics Release Inventory (TRI) Program which can cause cancer, other significant human health effects, are reactive, ignitable, or cause significant adverse environmental effects. EJScreen presents these toxic releases using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the toxic releases to air indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Toxic Releases to Air.

Source: EPA’s RSEI Geographic Microdata.

Date: 2021

Traffic Proximity

Description: The environmental burden indicator for traffic proximity measures the count of vehicles per day (average annual daily traffic- AADT) divided by distance. EJScreen presents traffic proximity using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the traffic proximity indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Traffic Proximity.

Source: U.S. Department of Transportation National Transportation Atlas Database, Highway Performance Monitoring System.

Date: 2020

Lead Paint

Description: The environmental burden indicator for lead paint is based on the percentage of housing units built before 1960, a proxy for how much lead paint people might be exposed to. EJScreen presents this potential exposure to lead paint using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the lead paint indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Lead Paint.

Source: Census Bureau's American Community Survey 5-year summary estimates.

Date: 2018-2022

Superfund Proximity

Description: The environmental burden indicator for Superfund proximity measures how close people might live to sites listed on the National Priorities List (NPL). This indicator calculates the total count of sites proposed and listed on the NPL within 5 km (or nearest within 10 km), divided by distance. EJScreen presents Superfund proximity using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the Superfund proximity indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Superfund Proximity.

Source: EPA’s CERCLIS database.

Date: 2024

RMP Facility Proximity

Description: The environmental burden indicator for RMP facility proximity measures how close people might live to an active facility with a required Risk Management Plan (potential chemical accident management plan). This indicator calculates the total count of RMP facilities within 5 km (or nearest within 10 km), divided by distance. EJScreen presents RMP facility proximity using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the RMP facility proximity indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for RMP Facility Proximity.

Source: EPA’s RMP database.

Date: 2024

Hazardous Waste Proximity

Description: The environmental burden indicator for hazardous waste proximity measures how close people might live to a facility that handles hazardous waste. This indicator calculates the total count of hazardous waste facilities (TSDFs and LQGs) within 5 km (or nearest within 10 km), divided by distance. EJScreen presents hazardous waste proximity using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the hazardous waste indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Hazardous Waste Proximity.

Source: EPA’s RCRAInfo database.

Date: 2024

Underground Storage Tanks

Description: The environmental burden indicator for UST measures how many underground storage tanks and UST release sites are near where people live. This indicator is based on the sum of LUSTs and USTs within a 1,500-foot buffered block group. EJScreen presents this relative density of USTs using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the UST indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for UST.

Source: EPA’s UST Finder tool.

Date: 2023

Wastewater Discharge

Description: The environmental burden indicator for wastewater discharge measures how much relative risk there is of being exposed to pollutants from wastewater that flows into rivers or other bodies of water downstream. This relative risk is based on estimated concentrations of pollutants in downstream water bodies within 500 meters, divided by distance in km. EJScreen presents wastewater discharge proximity using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the wastewater discharge indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Wastewater Discharge.

Source: EPA’s RSEI modeled toxic concentrations to stream reach segments.

Date: 2021

Drinking Water Non-Compliance

Description: The environmental burden indicator for drinking water non-compliance highlights populations served by community water systems that have challenges complying with Safe Drinking Water Act requirements. Points are calculated using a modified version of EPA’s Enforcement Targeting Tool criteria, which accounts for violation severity and age. EJScreen presents drinking water non-compliance using percentile rank, ranging from 0 (lowest) to 100 (highest).

For more details on the drinking water non-compliance indicator, including why it is important and what you can do moving forward, please visit the EJScreen Indicator Overview for Drinking Water Non-Compliance.

Source: EPA’s Safe Drinking Water Information System & Drinking Water Enforcement Response Policy and Enforcement Targeting Tool.

Date: 2023

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Water Monitors

USGS Water Monitors (NWIS)

Description: The USGS Water Monitors layer is retrieved in real-time from the United States Geological Survey (USGS) National Water Information System (NWIS). The NWIS service provides current conditions from selected surface water, ground water, and water quality sites.

Source: U.S. Geological Survey National Water Information System (NWIS)

Date: See source metadata by following the Source link above for the latest date information.

EPA Water Monitors (STORET)

Description: Water quality monitoring information comes from EPA's Storage and Retrieval (STORET) System, a repository of physical, chemical and biological monitoring data from state and federal agencies, watershed organizations, volunteer groups and many others. Surface water, Ground water, and Others are general categories for more specific STORET Station Types.

Source: EPA's Storage and Retrieval (STORET) System

Date: See source metadata by following the Source link above for the latest date information.

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Places

National Register of Historic Places

Description: The National Register of Historic Places is the official list of the nation's historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Register is the official Federal list of districts, sites, buildings, structures, and objects significant in American history, architecture, archeology, engineering, and culture. The National Register is managed and maintained by the National Park Service (NPS) and directed by the Keeper of the National Register. The National Register layer is downloaded from the NPS National Register of Historic Places geodatabase file.

Source: U.S. Department of the Interior National Park Service

Spatial Metadata: National Register of Historic Places

Date: See the source metadata by following the Source link above for the latest date information.

Schools

Description: Point locations for educational facilities in the USA, including buildings or groups of buildings used as an institution for study, teaching, and learning (e.g., academy, college, high school, university).

Source: U.S. Geological Survey Geographic Names Information System (GNIS)

Spatial Metadata: Schools

Date: See source metadata by following the Source link above for the latest date information.

Places of Worship

Description: Point locations for buildings used for religious worship (e.g., chapel, mosque, synagogue, tabernacle, or temple).

Source: U.S. Geological Survey Geographic Names Information System (GNIS)

Spatial Metadata: Worship Places

Date: See source metadata by following the Source link above for the latest date information.

Hospitals

Description: Point locations for buildings where the sick or injured may receive medical or surgical attention (e.g., infirmary, clinic).

Source: U.S. Geological Survey Geographic Names Information System (GNIS)

Spatial Metadata: Hospitals

Date: See source metadata by following the Source link above for the latest date information.

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Transportation

Airport Points

Description: The Airport layer includes points for landing facilities in the United States that were provided and maintained by the Federal Aviation Administration.

Source: National Transportation Atlas Database

Spatial Metadata: Airports Point

Date: See Spatial Metadata above for the latest date information.

Airport Polygons

Description: The Airport Polygons layer includes airport boundaries and airport runways within the United States.

Source: Data and Maps for ArcGIS

Spatial Metadata: Airports Polygon

Date: See Spatial Metadata above for the latest date information.

Railroads

Description: The Railroads layer includes linear features representing the United State's railway system. The Railroads layer is provided and maintained by the Federal Railroad Administration.

Source: National Transportation Atlas Database

Spatial Metadata: Railroads

Date: See Spatial Metadata above for the latest date information.

Water Features

Impaired Water Points

Description: The Impaired Water Points layer includes points that are too polluted or otherwise degraded to meet the water quality standards set by states, territories, or authorized tribes. These water points are on the CWA 303(d) list and are required to develop a total maximum daily load (TMDL). This set of water points are provided by the Assessment, Total Maximum Daily Load Tracking and Implmentation System (ATTAINS).

Source: EPA Office of Water ATTAINS Geospatial Data

Spatial Metadata: ATTAINS Assessement Areas

Date: 2020

Impaired Streams

Description: The Impaired Streams layer includes streams that are too polluted or otherwise degraded to meet the water quality standards set by states, territories, or authorized tribes. These streams are on the CWA 303(d) list and are required to develop a total maximum daily load (TMDL). These stream segments are provided by the Assessment, Total Maximum Daily Load Tracking and Implmentation System (ATTAINS).

Source: EPA Office of Water ATTAINS Geospatial Data

Spatial Metadata: ATTAINS Assessment Lines

Date: 2020

Impaired Water Bodies

Description: The Impaired Water Bodies layer includes bodies of water that are too polluted or otherwise degraded to meet the water quality standards set by states, territories, or authorized tribes. These water bodies are on the CWA 303(d) list and are required to develop a total maximum daily load (TMDL). This set of water areas are provided by the Assessment, Total Maximum Daily Load Tracking and Implmentation System (ATTAINS).

Source: EPA Office of Water ATTAINS Geospatial Data

Spatial Metadata: ATTAINS Assessement Areas

Date: 2020

Impaired Catchment

Description: The Impaired Catchment layer includes catchment assessment units that are too polluted or otherwise degraded to meet the water quality standards set by states, territories, or authorized tribes. These water bodies are on the CWA 303(d) list and are required to develop a total maximum daily load (TMDL). This set of water areas are provided by the Assessment, Total Maximum Daily Load Tracking and Implmentation System (ATTAINS).

Source: EPA Office of Water ATTAINS Geospatial Data

Spatial Metadata: ATTAINS Assessement Areas

Date: 2020

Streams

Description: The Streams layer includes linear surface water features throughout the United States. The streams layer is based on the National Hydrography Dataset (NHD).

Source: EPA Office of Water

Spatial Metadata: Streams

Date: 2005

Water Bodies

Description: The Water Bodies layer includes area surface features such as ponds, lakes and wide rivers. The water bodies layer is from U.S. Census Bureau TIGER/Line data.

Source: U.S. Census Bureau Areal Hydrography

Spatial Metadata: Water Bodies

Date: 2019

Sole Source Aquifers

Description: The Sole Source Aquifer layer includes information on the sole source aquifers (SSA) designated by EPA under section 1424(e) of the Safe Drinking Water Act of 1974. SSA's supply at least 50 percent of the drinking water consumed in the area overlying the aquifer. These areas may have no alternative drWatinking water source(s) that could physically, legally and economically supply all those who depend on the aquifer for drinking water.

Source: SSA Locations

Spatial Metadata: Sole Source Aquifers

Date: 2018

Watershed (HUC12)

Description: The Watershed (HUC12) layer includes a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States.

Source: USGS National Map Hydrography Products

Spatial Metadata: Watershed (HUC12)

Date: 2020

Watershed (HUC8)

Description: The Watershed (HUC8) layer is a complete digital hydrologic unit boundary layer to Catalog Unit (8-digit) for the entire United States, Puerto Rico and the U.S. Virgin Islands.

Source: National Atlas of the United States

Spatial Metadata: Watershed (HUC8)

Date: 2005

Wild and Scenic Rivers

Description: The Wild and Scenic Rivers layer includes segments of the National Wild and Scenic River System for the United States. The National Wild and Scenic Rivers Act protects wild rivers and scenic rivers from development that would substantially change their wild or scenic nature. The act was signed into law on October 2, 1968. Selected rivers in the United States are preserved for possessing outstandingly remarkable scenic, recreational, geologic, fish and wildlife, historic, cultural, or other similar values. Rivers, or sections of rivers, so designated are preserved in their free-flowing condition and are not dammed or otherwise impeded. National Wild and Scenic Rivers are each managed by one or more agencies of the federal or state government. For the full listing of designated Wild and Scenic Rivers, complete with mileage, classifications and managing agencies, view the Wild and Scenic Rivers Table

Source: National Wild and Scenic Rivers System

Spatial Metadata: Wild and Scenic Rivers

Date: See source metadata by following the Source link above for the latest date information.

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Non-attainment Areas

Ozone 8-hr (1997 standard)

Description: Ozone 8-hr (1997 standard)

Source and Spatial Metadata: Ozone 8-hr (1997 standard)

Date: See source metadata by following the Source link above for the latest date information.

Ozone 8-hr (2008 standard)

Description: Ozone 8-hr (2008 standard)

Source and Spatial Metadata: Ozone 8-hr (2008 standard)

Date: See source metadata by following the Source link above for the latest date information.

Ozone 8-hr (2015 standard)

Description: Ozone 8-hr (2015 standard)

Source and Spatial Metadata: Ozone 8-hr (2015 standard)

Date: See source metadata by following the Source link above for the latest date information.

Lead (2008 standard)

Description: Lead (2008 standard)

Source and Spatial Metadata: Lead (2008 standard)

Date: See source metadata by following the Source link above for the latest date information.

SO2 1-hr (2010 standard)

Description: SO2 1-hr (2010 standard)

Source and Spatial Metadata: SO2 1-hr (2010 standard)

Date: See source metadata by following the Source link above for the latest date information.

PM2.5 24hr (2006 standard)

Description: PM2.5 24hr (2006 standard)

Source and Spatial Metadata: PM2.5 24hr (2006 standard)

Date: See source metadata by following the Source link above for the latest date information.

PM2.5 Annual (1997 standard)

Description: PM2.5 Annual (1997 standard)

Source and Spatial Metadata: PM2.5 Annual (1997 standard)

Date: See source metadata by following the Source link above for the latest date information.

PM2.5 Annual (2012 standard)

Description: PM2.5 Annual (2012 standard)

Source and Spatial Metadata: PM2.5 Annual (2012 standard)

Date: See source metadata by following the Source link above for the latest date information.

PM10 (1987 standard)

Description: PM10 (1987 standard)

Source and Spatial Metadata: PM10 (1987 standard)

Date: See source metadata by following the Source link above for the latest date information.

CO (1971 Standard)

Description: CO (1971 Standard)

Source and Spatial Metadata: CO (1971 Standard)

Date: See source metadata by following the Source link above for the latest date information.

Ozone 1-hr (1979 standard-revoked)

Description: Ozone 1-hr (1979 standard-revoked)

Source and Spatial Metadata: Ozone 1-hr (1979 standard-revoked)

Date: See source metadata by following the Source link above for the latest date information.

NO2 (1971 Standard)

Description: NO2 (1971 Standard)

Source and Spatial Metadata: NO2 (1971 Standard)

Date: See source metadata by following the Source link above for the latest date information.

Boundaries

Zip Codes

Description: The Zip Codes layer provides information and identifies each postal delivery area in the United States.

Source: Data and Maps for ArcGIS

Spatial Metadata: Zip Codes

Date: 2023

Congressional Districts

Description: The Congressional Districts layer includes information on the 118th Congressional Districts of the United States, and U.S. Territories.

Source: ArcGIS Map Service

Spatial Metadata: Congressional Districts

Date: See Spatial Metadata link above for the latest date information.

City Boundaries

Description: The City Boundaries layer includes incorporated cities and Census Designated Places from the U.S. Census Bureau TIGER/Line data.

Source: U.S. Census TIGER/Line (National Sub-State Geography Geodatabase)

Spatial Metadata: City Boundaries

Date: 2022

Urban Areas

Description: Urban Areas are downloaded from the 2023 U.S. Census Bureau TIGER/Line Urban Areas. Census defines an urban area as comprised of a densely settled core of census blocks that meet minimum housing unit density and/or population density requirements. This includes adjacent territory containing non-residential urban land uses. To qualify as an urban area, the territory identified according to criteria must encompass at least 2,000 housing units or have a population of at least 5,000.

Source: U.S. Census TIGER/Line (National Nation-Level Geography Geodatabase)

Spatial Metadata: Urban Areas

Date: See Spatial Metadata link above for the latest date information.

Federal Lands

Description: The Federal Lands layer provides public lands from six federal agencies, bureaus, and/or departments, including Bureau of Land Management, Bureau of Reclamation, Department of Defense, National Park Service, US Fish and Wildlife Service and US Forest Service. Data downloaded from EPA SEGS US Federal Lands map service.

Source: EPA SEGS U.S. Federal Lands

Spatial Metadata: Federal Lands

Date: 2022

Townships Boundary

Description: The Townships Boundary layer portrays the Public Land Survey System (PLSS) boundaries of the United States to the township level. This layer is downloaded from the Bureau of Land Management (BLM) PLSS Map Service.

Source: Bureau of Land Management PLSS Townships

Spatial Metadata: Townships Boundary

Date: See Spatial Metadata link above for the latest date information.

Counties

Description: The Counties layer portrays the county boundaries of the United States.

Source: U.S. Census Cartographic Boundary Files (National 1:500,000 Geodatabase)

Spatial Metadata: Counties

Date: 2022

States

Description: The State layer provides state boundaries of the United States.

Source: U.S. Census Cartographic Boundary Files (National 1:500,000 Geodatabase)

Spatial Metadata: States

Date: 2022

EPA Regions

Description: The EPA Regions layer includes EPA Administrative Region boundaries derived from State boundaries.

Source: EPA Office of Environmental Information (OEI)

Spatial Metadata: EPA Regions

Date: See Spatial Metadata link above for the latest date information.

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Demographics Data

Demographics information is available to add to the NEPAssist map under the “More Data” button. You may click on the associated button to see metadata for that data layer. Please see the Census Bureau website for more explanations regarding Census Bureau data from the 2010 Census Summary File 1 (SF1) 100% count data and the annual American Community Survey (ACS) estimates using the 2018-2022 ACS 5-Year Summary database. Please note that all variables that show the percent rather than count were derived from count-based Census variables using the standard approach of count divided by total population of the population in question.

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NWI Wetlands

Description: The NWI Wetlands layer includes information from the National Wetland Inventory (NWI) which was established by the U.S. Fish and Wildlife Service (FWS) to conduct a nationwide inventory of U.S. wetlands to provide biologists and others with information on the distribution and type of wetlands to aid in conservation efforts.

Source: U.S. Fish and Wildlife Service NWI Wetlands

Spatial Metadata: NWI Wetlands

Date: See Spatial Metadata above for the latest date information.

Critical Habitat

Description: The Critical Habitat layer includes critical habitat designated by the U.S. Fish and Wildlife Service for all threatened species and endangered species under the Endangered Species Act, with certain specified exceptions. Critical habitat is a habitat area essential to the conservation of a listed species, though the area need not actually be occupied by the species at the time it is designated. It is important to understand that the designated critical habitat that is displayed in the map does not represent all of the critical habitat designated by the U.S. Fish & Wildlife Service. For complete information about all species with designated critical habitat, go to the Critical Habitat Data folder on the U.S. Fish & Wildlife Service Critical Habitat Report.

Source: U.S. Fish and Wildlife Service

Spatial Metadata: Critical Habitat Report

Date: See Spatial Metadata above for the latest date information.

FEMA Flood

Description:The FEMA Flood layer represents Flood Insurance Rate Map (FIRM) data important for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP) provided by the Federal Emergency Management Agency (FEMA). The National Flood Hazard Layer (NFHL) data present the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications.

Source and Spatial Metadata: FEMA's National Flood Hazard Layer

Date: See source metadata by following the Source link above for the latest date information.

National Land Cover

Description: The National Land Cover layer includes information from the National Land Cover Database (NLCD) which includes land cover classification schemes and quantifies land cover change for the conterminous U.S. between the years 2006 to 2019.

Source and Spatial Metadata: U.S. Geological Survey

Date: 2019

Habitat Data

Defense Sites

Description: The formerly used Defense Site Public Property boundaries. The facility or site (property) that was under the jurisdiction of the Secretary of Defense and owned by, leased to, or otherwise possessed by the United States at the time of actions leading to contamination by hazardous substances. The FUDS program is limited to those real properties that were transferred from DoD control prior to October 17, 1986. Properties must be located within the United States.

Source: Defense Sites

Spatial Metadata: Defense Sites

Date: 2023

Munitions Response Sites

Description: FUDS Public Munitions Response sites. The discrete location within a Munitions Response Area that is known to require a munitions response.

Source: Munitions Response Sites

Spatial Metadata: Munitions Response Sites

Date: 2023

Essential Fish Habitat

Description: Essential Fish Habitat are those areas that have been identified and described by species and lifestage. Fish require healthy surroundings to survive and reproduce. Essential fish haitat includes all types of aquatic habitat - wetlands, coral reefs, sea-grasses, rivers - where fish spawn, breed, feed, or growh to maturity. EFH Mapper Data is a combination of three existing data layers: Essential Fish Habitat (EFH), Habitat Areas of Particular Concern (HAPC) and EFH Areas Protected from Fishing (EFHA).

Source and Spatial Metadata: Essential Fish Habitat

Date: 2021

HAPC

Description: The purpose of HAPCs is to focus conservation, management, and research efforts on subsets of EFH that are vulnerable to degradation or are especially important ecologically for federally managed fish. The HAPC designation alone does not confer additional protection or restrictions to an area, but helps to focus EFH conservation, management, and research priorities. HAPC designation is a valuable way to acknowledge areas where we have detailed information on ecological function and habitat vulnerability, indicating a greater need for conservation and management.

Source and Spatial Metadata: HAPC

Date: 2021

EFHA

Description: This nationwide dataset represents designated EFH areas where fishing or the use of fishing gears had been restricted or modified in order to minimize the adverse effects of fishing on EFH as required by Section 303(a)(7) of the Magnuson Stevens Act.

Source and Spatial Metadata: EFHA

Date: 2021

Critical Environmental Concern

Description: BLM Areas of Critical Environmental Concern. This polygon feature class shows the spatial extent and boundaries of Areas of Critical Environmental Concern that have become officially designated by the BLM. These polygon features were previously in a pre-designated status (i.e. being considered as areas to be eventually designated as official ACEC designated polygons).

Source: Crital Environmental Concern

Spatial Metadata: Critical Environmental Concern

Date: 2023

Critical Habitat Areas per U.S. Fish & Wildlife

Description: Critical habitat areas of threatened and endangered species as defined by U.S. Fish & Wildlife Service

Source: Critical Habitat Areas per U.S. Fish & Wildlife

Spatial Metadata: Critical Habitat Areas per U.S. Fish & Wildlife

Date: 2023

Critical Habitat River, Stream or Water features per U.S. Fish & Wildlife

Description: Critical habitat river, stream or water features of threatened and endangered species as defined by U.S. Fish & Wildlife Service

Source: Critical Habitat River, Stream or Water features per U.S. Fish & Wildlife

Spatial Metadata: Critical Habitat River, Stream or Water features per U.S. Fish & Wildlife

Date: 2023

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