Skip to main content

Navigating the TMDL Process: Evaluation – A WERF Project Update

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


Navigating the TMDL Process: Evaluation and Design is a WERF-funded research effort begun in late 2000 directed toward improving the TMDL process. The research is expected to be completed in December 2002, with publication of the final report in Spring 2003. The objective of the Evaluation and Design study is to investigate issues and concerns with the TMDL program, and to develop and identify ways to improve the TMDL process.

A detailed survey of eight state TMDL programs from four different areas of the country was developed to further investigate each issue. Additionally, the researchers conducted a broad review of the characteristics of nearly 200 approved TMDLs, and detailed reviews of several TMDLs are used as case studies.

Preliminary findings of this investigation will be presented with specific emphasis on several issues identified for further study. These issues were highlighted as areas in need of improved approaches in the TMDL program, and the final WERF report will describe improved methodologies and provide examples for each of the following ten issues:

Improved Methods for Calculating the TMDL Margin of Safety

Incorporating Urban Wet Weather Point Sources in the TMDL Program

Guidance for Modeling Approach in a TMDL Process

Estimating Background Pollutant Loads

Linking Best Management Practices to Load Reductions

Quantifying Existing and Future Nonpoint Source Loads

Interrelationships Among Multiple Loads and Critical Conditions

Approaches for the Allocation of Loads in TMDLs

Implementation Planning, Tracking, and Adjustments

Adaptive Watershed Management in the TMDL Process

This paper reports on the evaluation portion of the WERF TMDL research project. A more complete review will be provided at the November 2002 TMDL Sciences Conference in Phoenix AZ.

Document Type: Research Article


Publication date: January 1, 2002

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more