Impaired Watersheds
The Impaired Watershed layer comes from the Environmental Protection Agency (EPA) through their published ArcIMS layers for Impaired Watersheds http://www.epa.gov/waters/geoservices/docs/radimsserviceshelpfaq-3.html
Internet Server: http://epamap32.epa.gov
Image Service: RADDetailedImage
Data Type: ArcIMS Image Service Sub-Layer
Feature Class: Impaired Waters Areas
Feature Type: Simple
Geometry Type: Polygon