EPA C-MAP: Clean Air Mapping and Analysis Program Data
Contents: Overview | Data Availability | Data Access | Documentation and Links
Title IV Electric Utility Sources
Overview
The Clean Air Markets Division is using geographic data to assess the environmental effectiveness of the Acid Rain Program. C-MAP is a Geographic Information System (GIS) assessment tool being used to better understand and characterize the benefits of national and regional pollutant emission reduction programs. C-MAP consists of two primary areas: the Map Gallery and GIS Data Download. Over 50 data layers are available for the categories of air, water, land, deposition, emissions, climate, sensitive resources, and area boundaries.
Availability
C-MAP data are available in shapefile and ArcInfo export formats (Albers Conical Equal Area ) for spatial data and DBF format for tabular data. Many of the data layers are available for the conterminous U.S. , while some are also available for Alaska, Hawaii, Puerto Rico, and the Virgin Islands.
Nationwide Data Layers Available (as of 2/20/02):
Air
- Aerometric Information Retrieval System (AIRS) Monitoring Sites
- AIRS Yearly Data
- AIRS Trend Data
- Aerometric Information Retrieval System (AIRS) Monitoring Sites
- Interagency Monitoring of Protected Visual Environments Program (IMPROVE) Monitoring Sites
- IMPROVE Yearly Data, By Season
Water
- Acidic Surface Waters
- ANC and PH Levels
- Acidic Lakes
- Acidic Streams
- National Water Quality Assessment (NAWQA) Program, Study-unit Boundaries
- National Water Quality Assessment (NAWQA) Program, Trace Elements Sampling Sites
- NAWQA Surface Water Trace Elements Data
- National Water Quality Assessment (NAWQA) Program, Trace Elements Sampling Sites
- NAWQA Surface Water Nutrients Data
- NAWQA Retrospective Database for Surface Water Nutrients: Monitoring Locations
- NAWQA Retrospective Surface Water Nutrients Data
- Hydrologic Benchmarks Network (HBN) Monitoring Stations
- HBN Data Trends
- HBN Yearly Data
- Hydrologic Units of the Conterminous U.S. (1:250,000)
- Digital Line Graph (DLG) of Streams in the Conterminous U.S. (1:2,000,000)
- Aquatic Ecoregions of the Conterminous U.S.
Land
- Forest Health Monitoring (FHM) Sampling Locations
- Forest Health Monitoring (FHM) Data Trends
- Forest Health Monitoring (FHM) Yearly Data
- Digital Elevation Model of the Conterminous U.S. (10-km resolution)
- Forest Density in the Conterminous U.S.
- Forest Density in the Conterminous U.S.
- Land Cover of the Conterminous U.S. (1-km resolution)
- Major Land Resource Areas (MLRA) of the Conterminous U.S.
- Major Land Uses of the Conterminous U.S.
Deposition
- Clean Air Status and Trends Network (CASTNet) Monitoring Stations
- National Atmospheric Deposition Program (NADP) Monitoring Stations
- NADP Yearly Data
Emissions
- Nitrogen-saturated Forests of the Conterminous U.S.
- Emissions & Generation Resource Integrated Database (E-GRID)
- Plant-level Annual Total SO2 Allowance Allocation
- Plant-level Annual Emissions
- Boiler-specific Information
- State-level Annual Emissions
- Plant-level Monthly Emissions
Climate
Sensitive Resources
- Acidic Surface Waters
- ANC and PH Levels
- Acidic Lakes
- Acidic Streams
- Nitrogen-saturated Forests of the Conterminous U.S.
Demographics
- Basic Demographic Information (1990)
- Educational Attainment for Persons 18 Years and Older (1990)
- Median Household Income for 1989
Area Boundaries
- Cities and Towns
- NPS Park Boundaries
- Boundaries for All U.S. States and Selected U.S. Territories
- Counties of the Conterminous U.S.
- Tribal Lands of the Conterminous U.S.
- Forest Service of the Conterminous U.S.
- Fish and Wildlife Service Units of the Conterminous U.S.
Access
Data are downloadable from http://www.epa.gov/airmarkets/cmap/data/category3.html. FGDC metadata files are available in conjunction with the data download links.
Documentation and Links
C-MAP Home Page
GIS Data Download and Metadata
Map Gallery
Clean Air Markets Division Home Page
Go to the GIS Data List Page
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