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About EPA

About the Watershed and Ecosystem Characterization Division

On This Page:

What We Do
Main Office Location


What We Do

The Watershed & Ecosystem Characterization Division (WECD):

  • Conducts to research to help characterize the presence, transport, transformation, sources, and impacts of contaminants in watersheds and ecological systems;
  • Develops methods to measure chemical and microbial pollutants in a environmental media such as soil, dust, water, and other biota to support environmental statues (e.g., Superfund and the Clean Water Act);
  • Uses ecological monitoring of chemical and biological stressors at multiple scales, characterizing the condition of environmental systems through the development and application of novel field indicators, environmental genomics, and geospatial tools;
  • Develops watershed management tools that are applied to both ecological response and economic benefits; and
  • Develops methods, tools, and technologies that are used to inform effective watershed management practices and minimize health risks from various chemical and microbial contaminants.

Relevant Research


Kevin Oshima, Director

Tom Behymer, Associate Director


  • Biological Measurements Branch
  • Ecosystem Condition Branch
  • Multimedia Methods Branch
  • Watershed Management Branch

Main Office Location

Watershed and Ecosystem Characterization Division
26 West Martin Luther King Drive
Mail Code: 587
Cincinnati, OH 4526