Soak Up the Rain New England Webinar Series:

Dissolved Phosphorus and Green Infrastructure: Fundamentals, Challenges, and Opportunities

Wednesday, September 28th, 1:30 PM – 3:00PM ET

Click Here to Register

Reducing phosphorus pollution in aquatic ecosystems is a primary goal in many watersheds across the United States to mitigate eutrophication and harmful algal blooms. Several forms of green infrastructure can effectively reduce loads of total phosphorus to surface waters through the retention of particles and associated phosphorus. Retention of dissolved phosphorus has proven to be more challenging, and in some cases poor retention of dissolved phosphorus, or even net dissolved phosphorus release, can compromise phosphorus load reduction goals. Furthermore, limited overall capacity to retain dissolved phosphorus in green infrastructure systems can potentially result in declining performance over time.

In this webinar, Eric Roy will discuss the fundamental biogeochemistry underpinning dissolved phosphorus dynamics in green infrastructure and highlight key mechanisms that control both dissolved phosphorus retention from water and release to water. Drawing on literature and recent research in Vermont, this presentation will address the challenge that dissolved phosphorus poses to water quality improvement efforts, opportunities to better manage dissolved phosphorus and enhance green infrastructure performance (including amendment of soil media with drinking water treatment residuals), and the use of phosphorus metrics to inform green infrastructure design. This webinar will include examples of green infrastructure at multiple scales, including urban green stormwater infrastructure (e.g., bioretention and subsurface gravel wetlands) as well as larger ecosystem-scale systems (e.g., restored riparian wetlands).


  • Eric D. Roy, PhD, Associate Professor at Rubenstein School of Environment and Natural Resources & Department of Civil and Environmental Engineering, University of Vermont

Register via Zoom:

 Who Should Attend:

Municipal decision makers, planners, and Department of Public Works (DPW) staff, environmental organizations, practitioners, educators, and interested citizens – anyone who is considering a new project or looking to build on an existing program.

About the Soak up the Rain Webinar Series:

The Soak up the Rain Webinar Series highlights innovative green infrastructure approaches to managing stormwater in New England, presented by leaders from around the region. Through these webinars, you can:

  • Hear about stormwater and green infrastructure tools and resources
  • See who’s soaking up the rain as we showcase green infrastructure projects and programs
  • Engage with others in sharing successes, barriers, and lessons learned while implementing green infrastructure in New England communities.

For more on Soak up the Rain, visit:

Disclaimer: EPA provides Soak up the Rain webinars solely for your reference and cannot attest to the accuracy of non-EPA information provided by third parties or any linked site. EPA does not endorse any non-federal government websites, entities, products, or services. Also, please be aware that the privacy protection provided on the domain (EPA Privacy and Security Notice) does not apply to these third-party sites. 


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