The Watershed and Water Quality Modeling Technical Support Center provides Clean Water Act implementation assistance to EPA Regions, State and Local Governments, and their contractors. The Center, which is part of EPA's Research program, offers access to technically defensible tools and approaches that can be used in the development of Total Maximum Daily Loads (TMDL), waste load allocations, and watershed protection plans. The Center reaches out to experts throughout EPA and States to provide technical expertise.

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Technical Support Center fact sheet (PDF) (2 pp, 733 KB, about PDF)

TMDL Modeling Toolbox fact sheet (PDF) (2 pp, 697 KB, about PDF)

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