Jump to main content or area navigation.

Contact Us

Water: Total Maximum Daily Loads (303d)

Compendium of Tools for Watershed Assessment and TMDL Development

(EPA 841-B-97-006)

The Compendium of Tools for Watershed Assessment and TMDL Development supports the watershed approach by summarizing available techniques and models that assess and predict physical, chemical, and biological conditions in waterbodies. It is intended to provide watershed managers and other users with information helpful for selecting models appropriate to their needs and resources. Specifically, this document includes information regarding:

  • A wide range of watershed-scale loading models.
  • Field-scale loading models.
  • Receiving water models, including eutrophication/water quality models, toxics models, and hydrodynamic models.
  • Integrated modeling systems that, for example, link watershed-scale loading with receiving water processes.
  • Ecological techniques and models that can be used to assess and/or predict the status of habitat, single species, or biological community.

Available through the National Service Center for Environmental Publications (NSCEP).


Jump to main content.