Stormwater management for linear projects and site developments presents challenges across the US. How do states address these issues, and what lessons can we take from their approaches? This session will explore insights from working on stormwater projects across various states, providing a broader view of stormwater regulation and management. Some regions focus heavily on long-term operations and maintenance, which can limit treatment options on constrained sites. In contrast, other states enforce strict treatment and flow control standards while offering flexibility in site design features like parking, setbacks, and maintenance. Cities such as Portland and Seattle offer stormwater credits for low-impact development techniques like tree trenches and vegetative filter strips and incentivize zero-discharge site designs, encouraging sustainable solutions. We will examine stormwater regulations in Minnesota, Washington, and Oregon, highlighting the facilities they use, their advantages and challenges, and how regulatory agencies manage the review and implementation process. Attendees will leave with new strategies to enhance stormwater management practices in their regions.

After this session, participants will be better able to:
• Analyze stormwater options for existing and new development.
• Consider expanding stormwater guidance documents to allow more flexibility of stormwater based on site constraints and operations and maintenance considerations.
• Explore how stormwater regulation is drastically different from state to state.

Contributor/Source

Emily Stephens Sr – Stormwater Engineer / Group Manager