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The Environmental Monitoring and Assessment Program (EMAP) was a national research program run by EPA’s Office of Research and Development from 1990 to 2008 to develop the tools necessary to...
Search relevance: 303.26 | Views last month: 9 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
The Environmental Monitoring and Assessment Program (EMAP) National Coastal Database contains estuarine and coastal data that EMAP and Regional-EMAP have collected since 1990 from thousands of...
Search relevance: 286.28 | Views last month: 1 | Catalog Last Checked: August 03, 2026 at 04:50 AM -
In 2004, the Environmental Protection Agency (EPA) Environmental Monitoring and Assessment Program (EMAP) National Coastal Assessment (NCA), coordinated through the Gulf Ecology Division,...
Search relevance: 103.66 | Views last month: 1 | Catalog Last Checked: November 03, 2026 at 03:50 PM -
This asset provides data on the acid-base status of lakes and streams. Key chemical indicators measured include: sulfate, nitrate, ammonium, chloride, Acid Neutralizing Capacity (ANC), pH, base...
Search relevance: 88.85 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
In 2002, the Environmental Protection Agency (EPA) Environmental Monitoring and Assessment Program (EMAP) National Coastal Assessment (NCA), in conjunction with state agencies, Region 9, and the...
Search relevance: 87.92 | Views last month: 2 | Catalog Last Checked: November 03, 2026 at 04:05 PM -
In 2002, the Environmental Protection Agency (EPA) Environmental Monitoring and Assessment Program (EMAP) National Coastal Assessment (NCA), in conjunction with state agencies, Region 9, and the...
Search relevance: 87.92 | Views last month: 0 | Catalog Last Checked: August 01, 2026 at 07:30 AM -
In 2004, the Environmental Protection Agency (EPA) Environmental Monitoring and Assessment Program (EMAP) National Coastal Assessment (NCA), coordinated through the Gulf Ecology Division,...
Search relevance: 68.60 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 07:51 AM -
This data release contains the outputs of a national-scale natural flow model and subsequent calculation of natural flow anomalies (NFA) at reference USGS streamgages and USGS streamgages linked...
Search relevance: 52.45 | Views last month: 0 | Catalog Last Checked: November 08, 2026 at 07:47 AM -
This dataset of 40 square kilometer (sq. km) hexagons was created by the U.S. EPA's Environmental Monitoring and Assessment Program (EMAP) and is being released by the U.S. Geological Survey for...
Search relevance: 46.04 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:41 PM
