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Federal
National Lakes Assessment Data
U.S. Environmental Protection Agency —
The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on... -
Federal
National Lakes Assessment (NLA) 2007 Report: Archived Data
U.S. Environmental Protection Agency —
National Lakes Assessment 2007 Datafiles for Report “National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes”: The National Lakes Assessment (NLA) is... -
Federal
National Coastal Condition Assessment 2015 Datafiles for Report “National Coastal Condition Assessment: A Collaborative Survey of the Nation's Estuaries and Nearshore Great Lakes”
U.S. Environmental Protection Agency —
National Coastal Condition Assessment 2015 Datafiles for Report “National Coastal Condition Assessment: A Collaborative Survey of the Nation's Estuaries and Nearshore... -
Federal
National Lakes Assessment 2017 Datafiles for Report “National Lakes Assessment 2017: The third collaborative survey of lakes in the United States"
U.S. Environmental Protection Agency —
The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on... -
Federal
National Wetland Condition Assessment 2021 Datafiles for Report “National Wetland Condition Assessment: The Third Collaborative Survey of Wetlands in the United States”
U.S. Environmental Protection Agency —
The National Wetland Condition Assessment (NWCA) is a statistical survey of the condition of wetlands in the conterminous United States. It is designed to provide... -
Federal
National Wetland Condition Assessment 2011 Datafiles for Report “National Wetland Condition Assessment 2011: A Collaborative Survey of the Nation’s Wetlands"
U.S. Environmental Protection Agency —
The National Wetland Condition Assessment (NWCA) is a statistical survey of the condition of wetlands in the conterminous United States. It is designed to provide... -
Federal
National Wetland Condition Assessment 2016 Datafiles for Report “National Wetland Condition Assessment: The Second Collaborative Survey of Wetlands in the United States”
U.S. Environmental Protection Agency —
The National Wetland Condition Assessment (NWCA) is a statistical survey of the condition of wetlands in the conterminous United States. It is designed to provide... -
Federal
Wadeable Streams Assessment Data
U.S. Environmental Protection Agency —
The Wadeable Streams Assessment (WSA) is a first-ever statistically-valid survey of the biological condition of small streams throughout the U.S. EPA worked with the...