Five Corners Stormwater Assessment & Tree Planting Project will conduct a comprehensive stormwater runoff study and feasibility analysis of tree plantings in the Five Corners area in The City of Groton. The team aims to locate areas with insufficient drainage capacity by developing a Stormwater Management Model (SWMM). This model will help identify locations for green stormwater infrastructure designs and gray stormwater infrastructure improvements. Completing this study will allow The City of Groton to pursue subsequent recommendations (4.1.2 – 4.1.6) identified in the 2022 Community Resilience Plan.

Project Goals:

• Map causes of stormwater flooding in Five Corners
• Develop USEPA Stormwater Management Model (SWMM) for the project area to inform future decision making
• Identify ways to reduce stormwater flooding in Five Corners
  • Nature-based solutions
  • Hybrid/grey solutions
• Center community needs in project planning and design
• Provide a framework for advancing the project through future phases
  • Funding/financing
  • Identifying future projects

What we're asking of you:

• Share your experience with flooding in the Five Corners area
  • Engage with the project team on this webpage
  • Attend the Open House and upcoming workshops
• Help us identify and design nature- based and hybrid/gray solutions
• Review deliverables and provide comments
• Serve on the Stakeholder Advisory Committee (we'll be meeting virtually two more times over the course of the project)
• If, you're a property owner, consider meeting with our team to discuss planting a tree or exploring flood mitigation solutions.
• Volunteer! Help us plant trees in Groton City

Planting While Planning

As part of the Stormwater Assessment, The Nature Conservancy will deliver and plant a free tree to residents of the Five Corners area that would like a tree. Groton is a priority city in Connecticut's Urban Forest Network and The Nature Conservancy will partner with residents to plant more trees. Residents will be responsible for the care of the tree.

Trees help our communities in so many ways! They:

• Improve air quality - leaves filter pollutants and replenish oxygen to improve the air for people and wildlife
• Cool neighborhoods - trees lower temperatures by providing shade and through evapotranspiration
• Improve health - exposure to trees reduce stress and anxiety, lowers blood pressure, and improves mood
• Enhance neighborhood beauty - "green" city blocks are beautiful and inviting for strong communities
• Reduce flooding - trees lessen the force of storms and reduce the amount of runoff into sewers, streams, and rivers
• Improve water quality - leaves and roots filter rainfall and runoff to reduce pollution and flood risk

and so much more!

This spring we planted 20 trees around the Five Corners area - thank you to everyone who signed up to receive a free tree! We are looking forward to planting more trees this fall. If you would like to help us plant trees, please sign up below, and we will email you with information on tree planting dates this fall.

Upcoming Events

Thursday, July 23, 3:00-4:00pm: Stormwater Infrastructure for Private Property Meeting

The project team will host a virtual session to discuss the results from the stormwater assessment and look for opportunities to collaborate on green and gray water infrastructure improvements on private property. Please click here to register!

Friday, August 1, 5:00-8:00pm: City Day

Stop by our table at City Day in Washington Park to hear more about the project and share your feedback. Tell us what you would like to see in the Five Corners area and pick up a free native plant!

Thursday, August 7, 6:00-8:00pm: Design Charrette #2

Join us at the Council Chambers in the City of Groton Municipal Building for our second design charette to explore potential green stormwater infrastructure interventions. This design charette will share green stormwater infrastructure alternatives that could be implemented around the Five Corners area to mitigate stormwater related flooding. Join us and share your feedback on what you would like to see! Please click here to register!

Learn more about the project in the Long Island Sound Clean Watershed Network's "Tackling Climate Pollution in Long Island Sound" episode!