31st Annual Nonpoint Source Conference

The 31st Annual Nonpoint Source Conference was held May 20, 25, & 27, 2021.

Thanks to all who made the conference a success!

Since 1990, NEIWPCC, in partnership with its member states, has been coordinating the Annual Nonpoint Source (NPS) Conference, the premier forum in the northeast for sharing information and improving communication on NPS pollution issues and projects.

Faced with apparent obstacles to in-person meetings, our drive to collaborate and share has not wavered. While we missed seeing you all in-person, the safety of the NPS community is paramount. As we have for 30 years, we will continue to provide the NPS community with an engaging forum for networking, demonstration, and coordination.

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If you attended the conference and would like access to presentation PDFs, links to the recordings, or attendee information, please contact James Plummer. To view information from past Annual NPS Conferences, including the agenda and presentation slides, visit the NPS Conference Archive.

Click here for speaker biographical information.

Day 1 – May 20

§319 Nonpoint Source Program: Impact, Enhancements, Program Priorities
Lynda Hall, Nonpoint Source Management Branch Chief, US EPA
Measuring Stormwater Outreach
Eric Eckl, Water Words That Work
SESSION 1. Stormwater Optimization & Maintenance
When Maintenance Drives Design – Philadelphia and NYC Green Streets
Robert Woodman, ACF Environmental
Region 1 Approach to Stormwater Research, Regulation, and Watershed Restoration
Ray Cody, US EPA
Newton Tedder, US EPA
Integrated stormwater management approach for impervious cover disconnection
Khalid Alvi, Paradigm Environmental
Ray Cody, US EPA
SESSION 2. Ready, Living, and Stable: Discussions of Bank Stabilization
Nick Nelson, Inter-Fluve
Kristen Andersen, University of Alberta
Peter Slovinsky, Maine Geological Survey

Day 2 – May 25

SESSION 3. Watershed Planning
Chesapeake Bay Subwatershed Assessment Tool: An interactive ArcGIS Online Dashboard
Cassandra Davis, NYSDEC
Finding the Needle in the Haystack: Assessing Agricultural BMP Efficacy in the Palmer River Watershed
Laura Diemer, FB Environmental
Ian Dombroski, USEPA
Jennifer Relstab, Horsley Witten Group
1,400 Miles, 6,000+ Acres, and 21%: Phosphorus Control Planning for Vermont’s State Transportation Agency
Amy Macrellis, Stone Environmental
Jennifer Callahan, VTrans
SESSION 4. Natural Infrastructure
Leave it to Beaver: Using Massachusetts’ MVP program to facilitate nature-based solutions for flood resiliency and water quality co-benefits
Julianne Busa, Fuss & O’Neill
Permanent Protection of Riparian Buffers in the Chesapeake Bay Watershed
Lauren Townley, NYSDEC
Pawtuxet and Pocasset River Floodplain Restoration Projects: A Natural Approach to Enhancing Flood Resiliency while Restoring Historic Flow Regimes
Sean Arruda, Fuss & O’Neill
SESSION 5. Conversations on Land Conservation
Jeanne Beiter, Buffalo Niagara Waterkeeper
Paul Hunt, Portland Water District
Spencer Meyer, Highstead Foundation

Day 3 – May 27

SESSION 6. Social Science for Stormwater
A new approach for municipal stormwater management capacity building
Jamie Houle, UNH Stormwater Center
Rethink Runoff and the Stream Team, a regional stormwater education campaign to restore water quality in Lake Champlain
Chelsea Mandigo, Village of Essex Junction
Annie Costandi, Town of Essex
Jennifer Relstab, Horsley Witten Group
New Partnership Established to Provide Statewide Outreach and Assistance to CT MS4 Municipalities
Amanda Ryan, UConn CLEAR
SESSION 7. Innovative Practices
Expanding EPA’s crediting for impervious cover disconnection
Theresa McGovern, VHB
Nate Pacheco, VHB
Phosphorus removal and hydraulic dynamics in bioretention systems amended with drinking water treatment residuals
Mike Ament, UVM
Monitoring bioretention cell nutrient removal performance in an agricultural runoff setting
Jillian Sarazen, UVM


Banner photo by Evan Wade, reproduced with permission.


James Plummer

Who Should Attend?

federal, tribal, state, and municipal government


private sector professionals


nonprofit and watershed organizations staff


college and university students and professors

Please contact James Plummer if you would like to be added to the email list for this conference.

NPS Conference Archive

To view information from past Annual NPS Conferences, including the agendas and presentations, visit the NPS Conference Archive.

National NPS Workshop Archive

Take a look at materials from the National NPS Workshop that took place in early November 2018!