Stormwater

THE REGIONAL STORMWATER COLLABORATIVE

SECOG facilitates and staffs the Regional Stormwater Collaborative (RSC). The RSC brings municipalities together to discuss and collaborate on shared stormwater management issues, explore regional developments in green infrastructure and utility improvements, and stay current on MS4 compliance. The MS4 municipalities in the SECOG region include: East Lyme, Griswold, Groton, Ledyard, Lisbon, Montville, New London, Norwich, Sprague, Stonington, and Waterford.

Meetings are held quarterly, agendas and summaries can be found here. If interested to learn more or attend an RSC meeting, email Dominic Anziano at [email protected].

Upcoming meetings:

  • Dec. 18th, 2025 at 8:30 AM, SECOG Office & Virtual
  • March 26th, 2026 at 8:30 AM, SECOG Office
  • June 25th, 2026 at 8:30 AM, SECOG Office & Virtual
  • Sep. 24th, 2026 at 8:30 AM, SECOG Office & Virtual

RESOURCES

UCONN CT NEMO Program – an educational implementation guide on Connecticut’s MS4 permit geared towards municipal officials and planners in qualifying cities and towns.

General Permit for the Discharge of Stormwater from Small
Municipal Separate Storm Sewer Systems (MS4)
– click through to explore the recently updated MS4 permit.

STORMWATER AUTHORITIES IN CONNECTICUT

2023 Municipal Stormwater Utility Feasibility Study – Click through to read the findings of this document that examined the possibility of local stormwater authorities in the towns of Waterford, Ledyard, Preston, and Stonington.

Key findings from this study are also summarized in the Stormwater Utility Resource Guide below.

Map Optimized for Mobile

STORMWATER SUCCESS STORIES

TOWN OF STONINGTON

Section 319 Grant Award

Partnership with ECCD and WCWC to improve water quality via green infrastructure, educational campaign, and public outreach within greater Wequetequock Cove Watershed.​

TOWN OF GROTON

Flooding: The Unseen Risks

Video series collaboration between Save the Sound and the Town of Groton. The product serves as a great family-friendly public education resource for MS4 municipalities. View the full playlist here.

CITY OF GROTON

Stormwater Assessment & Concepts for 5 Corners

Stormwater assessment to closely study the affected areas and develop nature-based solutions.