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#1 Federal

National Wetland Condition Assessment 2021 Datafiles for Report “National Wetland Condition Assessment: The Third Collaborative Survey of Wetlands in the United States”

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: December 19, 2024

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 the extent of...

FILE

Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: August 03, 2026 at 12:51 AM

#2 Federal

National Lakes Assessment 2017 Datafiles for Report “National Lakes Assessment 2017: The third collaborative survey of lakes in the United States"

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: July 05, 2022

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 the extent of lakes that support...

FILE

Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 03, 2026 at 12:49 AM

#3 Federal

National Lakes Assessment (NLA) 2007 Report: Archived Data

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: July 11, 2013

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 statistical survey of the...

FILE

Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 03, 2026 at 12:49 AM

#4 Federal

National Wetland Condition Assessment 2011 Datafiles for Report “National Wetland Condition Assessment 2011: A Collaborative Survey of the Nation’s Wetlands"

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: May 22, 2018

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 the extent of...

FILE

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 03, 2026 at 12:51 AM

#5 Federal

National Lakes Assessment 2012 Datafiles for Report “National Lakes Assessment 2012: A collaborative survey of lakes in the United States"

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: February 23, 2017

National Lakes Assessment 2012 Datafiles for Report “National Lakes Assessment 2012: A Collaborative Survey of lakes in the United States”: The National Lakes Assessment (NLA) is a statistical...

FILE

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 03, 2026 at 12:49 AM

#6 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”

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: November 01, 2021

National Coastal Condition Assessment 2015 Datafiles for Report “National Coastal Condition Assessment: A Collaborative Survey of the Nation's Estuaries and Nearshore Great Lakes”: The National...

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 03, 2026 at 12:49 AM

#7 Federal

Federally Recognized Tribes

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: February 11, 2021

This dataset provides authoritative names for federally recognized tribes as defined by the Bureau of Indian Affairs. EPA maintains this data (1978 - Present) and makes it available via the...

FILE

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 01, 2026 at 03:29 AM

#8 Federal

National Wetland Condition Assessment 2016 Datafiles for Report “National Wetland Condition Assessment: The Second Collaborative Survey of Wetlands in the United States”

Organization: U.S. Environmental Protection Agency
Dataset Last Updated: April 10, 2023

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 the extent of...

FILE

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 03, 2026 at 12:50 AM

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National Wetland Condition Assessment 2021 Datafiles for Report “National Wetland Condition Assessment: The Third Collaborative Survey of Wetlands in the United States”

National Lakes Assessment 2017 Datafiles for Report “National Lakes Assessment 2017: The third collaborative survey of lakes in the United States"

National Lakes Assessment (NLA) 2007 Report: Archived Data

National Wetland Condition Assessment 2011 Datafiles for Report “National Wetland Condition Assessment 2011: A Collaborative Survey of the Nation’s Wetlands"

National Lakes Assessment 2012 Datafiles for Report “National Lakes Assessment 2012: A collaborative survey of lakes in the United States"

National Coastal Condition Assessment 2015 Datafiles for Report “National Coastal Condition Assessment: A Collaborative Survey of the Nation's Estuaries and Nearshore Great Lakes”

Federally Recognized Tribes

National Wetland Condition Assessment 2016 Datafiles for Report “National Wetland Condition Assessment: The Second Collaborative Survey of Wetlands in the United States”