EMAP stands for Environmental Monitoring and Assessment Program, which was a long-term monitoring program initiated by the U.S. Environmental Protection Agency (EPA) in 1990 to assess the condition of the nation's ecological resources. The program aimed to provide a comprehensive picture of the ecological condition of the country's surface waters, wetlands, and terrestrial resources.

Here are some examples of how EMAP was used in an environmental context:

  1. Surface Water Quality: EMAP was used to assess the quality of the nation's surface waters, including rivers, lakes, and estuaries. The program collected water samples and measured various parameters such as nutrients, dissolved oxygen, and pollutants to assess the condition of these water bodies and identify potential risks to human and ecosystem health.

  2. Wetland Assessment: EMAP was used to assess the health of wetlands and identify potential threats to these important ecosystems. The program collected data on wetland vegetation, soils, and hydrology to assess the condition of wetlands and identify potential stressors such as pollution and development.

  3. Terrestrial Monitoring: EMAP was used to assess the condition of the nation's terrestrial resources, including forests, grasslands, and deserts. The program collected data on vegetation, soils, and wildlife populations to assess the health of these ecosystems and identify potential threats such as invasive species and land use change.

  4. Ecological Risk Assessment: EMAP was used to conduct ecological risk assessments to identify potential risks to human and ecosystem health from exposure to environmental contaminants. The program collected data on the concentrations of various contaminants in environmental media such as air, water, and soil, and used this information to assess the potential risks to human health and the environment.

  5. Geographic Information Systems (GIS): EMAP used GIS technology to integrate and analyze data from various sources to create maps and models of environmental conditions and potential risks. GIS was used to visualize the results of monitoring and assessment activities, and to identify areas where environmental protection and restoration efforts were most needed.

Overall, EMAP was a comprehensive program that provided valuable information on the state of the nation's ecological resources and the potential risks to human and ecosystem health. The data collected through EMAP has been used to inform environmental management and policy decisions at the federal, state, and local levels.


Emap International Limited (now known as Top Right Group) is a British media company, specialising in the production of business-to-business magazines, and the organisation of business events and conferences.

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