The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics.
U.S. Forest Service National Insect and Disease Risk Maps
This record is no longer being maintained.
STEWARDS - A data delivery application for the USDA/ARS Conservation Effects Assessment Project
STEWARDS is a data delivery application that provides web-based access to of soil, water, climate, land management, and geospatial data produced by Conservation Effects Assessment Project (CEAP) watershed research sites across the United States.