-
National Lakes Assessment (NLA) 2007 Report: Archived Data
National Lakes Assessment 2007 Datafiles for Report “National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes”: The National Lakes Assessment (NLA) is a... -
Wadeable Streams Assessment Data
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 states to... -
National Wetland Condition Assessment 2016 Datafiles for Report “National...
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 information on...