National Wetland Condition Assessment

The National Wetland Condition Assessment (NWCA) is a collaborative survey of our Nation's wetlands. The NWCA examines the chemical, physical and biological integrity of wetlands through a set of commonly used and widely accepted indicators.

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Basics of the NWCA

• Background of the NWCA
• Field and Lab Manuals

NWCA Results

• 2021 NWCA Results
• 2016 NWCA Results
• 2011 NWCA Results

Explore the Data

• Download Data

Learn more about wetlands 

• Wetlands Storymap