Science & Technology
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Coastal Plains Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Coastal Plains ecoregion
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Ecoregional Results - National Lakes Assessment 2022
Results for the National Lakes Assessment 2012, including key findings, national results, ecoregional results, and state highlights.
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Reports and Data - National Lakes Assessment 2022
Products from the national lakes assessment 2017 including report, technical report, factsheet, data files, and data dashboard
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Southern Plains Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Southern Plains ecoregion
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Temperate Plains Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Temperate Plains ecoregion
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Xeric Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Xeric ecoregion
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Western Mountains Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Western Mountains ecoregion
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National Results and Regional Highlights - National Lakes Assessment 2012
NLA 2012 Report and Regional Highlights
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What is the National Lakes Assessment?
The National Lakes Assessment is a collaborative, statistical survey of the nation's lakes. It is one of four national surveys that EPA and its partners conduct to assess the condition and health of the nation's water resources.
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National Coastal Condition Assessment 2020 Manuals
National Coastal Condition Assessment 2020 Manuals including field, lab etc.
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National Lakes Assessment 2007 Report
National Lakes Assessment 2007 Report
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National Coastal Condition Report IV (2012)
The NCCR IV data shows an overall condition score of 3.0 for the nation’s coastal waters; although this score has improved substantially since 1990, the overall condition of the nation’s coastal resources continues to be rated fair.
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National Coastal Condition Report III (2008)
The National Coastal Condition Report III (NCCR III) is the third in a series of environmental assessments of U.S. coastal waters and the Great Lakes. The report includes assessments of the nation’s estuaries in the contiguous 48 states and Puerto Rico.
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National Coastal Condition Report I (2001)
Thousands of pieces of information on the condition of the estuarine and Great Lakes resources of the United States were collected from 1990 to 1997 with results showing estuaries to be in fair to poor condition.
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National Coastal Condition Assessment Design Documents
Design documents for the National Coastal Condition Assessment.
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National Coastal Condition Assessment 2015 Report
PDF of the National Coastal Condition Assessment 2015 Report.
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Northern Appalachians Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Northern Appalachians ecoregion
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MOVES and Mobile Source Emissions Research
MOVES is a state-of-the-science emission modeling system that estimates emissions for mobile sources at the national, county, and project level for criteria air pollutants, greenhouse gases, and air toxics.
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Particulate Matter (PM) Air Quality Standards - Documents Prior to Review Completed in 1997
Particulate Matter (PM) Air Quality Standards - Documents Prior to Review Completed in 1997
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2019 AirToxScreen: Assessment Results
Downloadable results files related to the 2019 AirToxScreen assessment.