National 303(d)/TMDL Webinar Series

NEIWPCC, through a grant from EPA, is hosting a series of informational national webinars on key topics for state, territory, and tribal 303(d) and TMDL programs and other non-governmental stakeholders when appropriate.

The series of informational webinars began with two webinars in 2016, followed by up to four webinars per year in the subsequent years of the grant, through 2020.

NEIWPCC convenes a planning team of state and EPA staff to discuss topics and framework for future webinars to make the series as valuable as possible to our target audiences.

Next Webinar: Visualizing Data

On October 3, 2019 from 1 – 2:30 pm ET, Tommy McCall of will give a presentation on data visualization design.

In the presentation, Tommy aims to inspire attendees to up their game to create more informative yet accessible data visualizations. Viewers will be exposed to a wide variety of chart forms to inspire them to go beyond the ubiquitous pies, bars and line charts. Tommy believes that graphics are best when they help you achieve a thinking task more quickly or can show you a book’s worth of information on a single page. He will walk through several projects to highlight key principals and challenges he faced and share his 25 plus years of experience in the field.

To register, please follow this link:

This webinar and all others in this series will be recorded and posted to the archives section of this page for those who are unable to attend live.

For additional information about this project or upcoming webinars, contact Emma Gildesgame.

Water under the bridge

Webinar Archives:

Click the links below to find information, recordings, and supporting material from our previous webinars.

Stakeholder Engagement

The National 303(d)/TMDL Webinar Series presented a webinar on Stakeholder Engagement on Tuesday, May 21, 2019.

This webinar featured a presentation from Dr. Karen Kline of Virginia Tech.
Dr. Kline presented “Involving stakeholders in the development of a TMDL implementation plan.” This presentation focused on the role of stakeholder involvement in creating a successful TMDL implementation plan (IP). It includes an overview of research that examines stakeholder participation during IP development. Discussions of the types of stakeholders needed, how to engage them, and their specific contributions in IP development will also be covered.

View Webinar Recording
View Presentation

Stressor ID

The National 303(d)/TMDL Webinar Series presented a webinar on Stressor ID on Tuesday, November 20, 2018.

This webinar featured presentations by Mary Becker (CT DEEP) and Chad Larson (WDOE).

Mary Becker presented “Diatom tolerance metrics to identify total phosphorus as a candidate cause of aquatic life impairment in Connecticut freshwater streams.”
This presentation detailed the development of diatom tolerance metrics that discriminate between low and high total phosphorus concentrations at sites in Connecticut freshwater rivers and streams. The results of this study show that these metrics can be effectively used as part of a weight of evidence approach to identify phosphorus as a cause of aquatic life impairment.

Chad Larson presented “Flow pulses and fine sediments degrade stream macroinvertebrate communities in King County, Washington, USA.”
Determining the causes of biological impairment in urban stream settings presents unique challenges because there are many potential stressors associated with human development. A rigorous, scientifically based process is more likely to identify influential stressors that can be reduced to improve stream condition. We used the U.S. Environmental Protection Agency’s (U.S. EPA) CADDIS (Causal Analysis/Decision Information System) stressor identification process to assess eight candidate causes in the urban Soos Creek Basin in Washington State. Of the stressors evaluated, flow alteration, increased fine sediments, and loss of habitat complexity were the most probable causes of biological impairment, with multiple biological metrics responding predictably across levels of impairment. Ultimately, demonstrating the utility of causal assessment in a practical situation provides greater confidence that mitigation efforts aimed at improving biological health of urban stream communities will have detectable desired effects while also providing a baseline from which the effectiveness of management practices can be evaluated.

View Webinar Recording
View CT DEEP Presentation
View WDOE Presentation

Story Maps

The National 303(d)/TMDL Webinar Series presented a webinar on Story Maps on Wednesday, October 24, 2018.

This webinar featured a presentation by Dustin Shull and Carrie Tropasso of Pennsylvania DEP. In their presentation, Dustin and Carrie introduce both ESRI Story Maps and more technical Open Source Code Reports currently available for use by States and other organizations. Viewers will learn about the skills, software, and resources needed to create a story map or code based digital report in order to transition fully towards electronic reporting.

View Webinar Recording
View PA DEP Presentation

TMDL Revisions

The National 303(d)/TMDL Webinar Series presented a webinar on TMDL Revisions on Thursday, July 12, 2018.

This webinar featured two presentations:

Chris Hunter (EPA HQ) presented on EPA HQ’s perspective on TMDL revisions, as well as some past examples.

Erin Rasnake (FL DEP) presented “TMDL Revisions: Examples from Florida.”
This presentation was an overview of how Florida has begun to tackle the need for revisions of adopted TMDLs and what lead to that decision. Focus was on the process for each TMDL as well as lessons learned and potential path forward for future projects.

View Webinar Recording
View EPA HQ Presentation
View Florida DEP Presentation

TMDL Alternatives

The National 303(d)/TMDL Webinar Series held a webinar on TMDL Alternatives on Thursday, May 3rd, 2018.

This webinar featured three presentations:

Scott Heidel (PA DEP) presented on The Alternative Restoration Plan for Kishacoquillas Creek charts a path toward restoration of aquatic life and attainment of water quality standards for an agricultural watershed in Central Pennsylvania. A reference watershed approach was applied to develop load reduction goals for nutrients and sediment. Modeling was done using the MapShed model to represent the phased restoration approach to BMP implementation taking place in the watershed and demonstrate progress toward water quality goals at each stage.

Cam Mcnutt (NC DWR) gave a presentation titled “Watershed Action Plan.  Online mapped based tools to build watershed restoration plans.”

NC DWR is developing tools and workflows to efficiently and effectively build Watershed Action Plans that are dynamic and engage a wide range of stakeholders in the restoration planning process. The Watershed Action Plan development process will focus on using resources to implement rather than plan by optimizing opportunities and using non-regulatory mechanisms to restore water quality. DWR will present the various planning tools and demonstrate how these tools integrate across Clean Water Act programs. Most importantly, DWR will demonstrate how all types of restoration projects from best management practices to stormwater control measures to instream habitat restoration can be tracked and accounted for in the Clean Water Act paradigm.

Heather Husband (ND DOH) presented on “North Dakota’s Alternative Plans.” This presentation provided a general overview of why North Dakota chose to do alternative plans and how it fits into their Universe of water quality programs.

View Webinar Recording
View North Dakota DOH Presentation
View North Carolina DWR Presentation
View Pennsylvania DEP Presentation

Chloride TMDLs

The National 303(d)/TMDL Webinar Series held a webinar on Chloride TMDLs on Thursday, March 1st, 2018.

This webinar featured two presentations:

  • Will Isenberg, Virginia DEQ, presented “Accotink Creek Chloride TMDLs and the Salt Management Strategy for Northern Virginia.” This presentation will detail the process for identifying chlorides as a most probable stressor of the benthic community, the evolution of TMDL development assumptions and the role stakeholders played in that, the shifting of focus to implementation, and the current status of the Salt Management Strategy for Northern Virginia that ultimately aims to implement the TMDL.
  • Stephen McCracken presented “Working with chloride TMDLs in North Eastern Illinois.” In 2004 chloride TMDLs were approved for several segments of the DuPage River and Salt Creek systems. Impacted communities responded by reviewing the scale and nature of the problem, identifying potential solutions, and working out how to accommodate large transportation developments in the crowded watersheds.

View Webinar Recording
View Virginia DEQ Presentation
View DuPage River Salt Creek Workgroup Presentation

Examples of TMDL Tracking and Reporting

The National 303(d)/TMDL Webinar Series held a webinar on TMDL Tracking and Reporting on Thursday, September 28th, 2017.

  • Matt Johnston, of the University of Maryland and the Chesapeake Bay Program Office presented “Making Progress Count: An Overview of the Chesapeake Bay Program’s Efforts to Estimate Pollution Reductions.”
  • Jason Sutter, Arizona DEQ, presented “Tracking Improvements: Arizona’s Water Quality Index.”

View Webinar Recording
View Chesapeake Bay Presentation

View AZ DEQ Presentation

Examples of TMDL Implementation

The National 303(d)/TMDL Webinar Series held a webinar on TMDL Implementation on Thursday, June 8th, from 1-3 pm EST.

This webinar featured two presentations focusing on what makes a good implementation plan, implementation with larger projects, and a few case studies.

  • Nicole Sandberg and Ashley Wendt (VA DEQ) presented “TMDL Implementation Planning in Virginia.” As a state required to write implementation plans for their TMDLs, they discussed how to write a good implementation plan, what resources are required, and how to prioritize writing implementation plans.
  • Jayshika Ramrakha (EPA R10) and Bryan Duggan (ODEQ) presented on the “Coquille River Watershed TMDL Mapping Tool,” developed to display shade- and habitat-related geographic information system (GIS) data for the Coquille River Watershed. This tool is intended to be used by stakeholders to query and display layers and support the identification of high value implementation locations. Included in this presentation was a discussion of the Coquille River Watershed’s background and an overview of how this works in the watershed scale.

View Webinar Recording
View VA DEQ Presentation
View EPA R10 & ODEQ Presentation

Coordinating with Agricultural Partners across Clean Water Act Programs

The Environmental Protection Agency Nonpoint Source Program and 303(d) Impaired Water Listing and TMDL Program present the second webinar in this engagement webinar series, “Coordinating with Agricultural Partners across Clean Water Act Programs.” This webinar focuses on intra-agency integration and communication among the 303(d) Impaired Water Listing and TMDL and Nonpoint Source Programs when engaging with the agriculture sector.

This webinar includes these topics:

  • Overview of the National Nonpoint Source Program engagement with the agriculture community
  • Highlight of several case studies of successful interaction between the state Nonpoint Source Program and agriculture community and ways to engage the 303(d) Impaired Water Listing and TMDL Program

View Webinar Recording
View EPA HQ Presentation
View EPA Region 8 Presentation
View WI DNR Presentation
View IL EPA Presentation
View DE DNR Presentation

Building Consensus for Better Water Quality Outcomes

Drawing on his experience working with multiple stakeholders, Dr. Frank Dukes offers best practices for engaging stakeholders and communities while working on water quality issues. This webinar includes these topics, as well as a very informative Q&A Session:

  • Challenges and rewards of stakeholder engagement
  • How not to build consensus: learning from mistakes—mine and others’
  • Core values of public participation (IAP2) and why they are important
  • A structure for authentic, effective engagement

Frank Dukes worked as a mediator on his first water quality case in 1990. He has served as a consultant, process designer, mediator, and facilitator on many water quality challenges since then, including several TMDL implementation plans.

View Presentation
View Webinar Recording
View IAP2 Spectrum

Modeling Applications to Integrate TMDLs and Permitted MS4s

How can TMDLs be integrated into stormwater planning? How can MS4s numerically demonstrate progress to meeting WLAs? How can regulatory agencies objectively assess the pollution control accomplishments of MS4s? This webinar covered case studies of municipalities in Wisconsin that serve as examples of how to use a dovetailed watershed- and municipal-scale modeling approach to determine pollutant loading and then address implementation needs and considerations. The presentation was tailored to address the variability of MS4s around the country.

The presentation covered the following points:

  • Overview of the types of issues that modeling can address for urban areas with TMDLs
  • Linking TMDL watershed scale modeling to municipal scale modeling
  • How watershed model results can be used to develop detailed implementation plans for several urban communities (using the SLAMM model)
  • Data needs to evaluate permit compliance and inform stormwater management practices

View Presentation
View Webinar Recording

The session was co-presented by the Wisconsin Department of Natural Resources, Brown and Caldwell, and the U.S. Geological Survey. Our presenters each have over 20 years of experience working nationally on watershed and municipal water issues.