EPA's 2016 National Wetland Condition Assessment sampled wetlands across the conterminous USA for vegetation, soils, water chemistry, and anthropogenic impacts. Data for all of these elements of the 2016 NWCA survey are available from the EPA NARS website. This particular publication uses the water chemistry data and the anthropogenic impacts data, as well as the general site data that describes sampling locations, wetland type classifications, etc.
This dataset is associated with the following publication:
Trebitz, A., and A. Herlihy. Wetland water quality patterns and anthropogenic pressure associations across the continental USA. WETLANDS. The Society of Wetland Scientists, McLean, VA, USA, N/A, (2023).