Stormwater / MS4
Managing Rain -- or "Stormwater" -- Runoff
Stormwater is the rainfall or snowmelt which results from precipitation. Years ago, when rain or snow fell it would be absorbed slowly into the ground. This natural filtration is best for our eco-system. But now, hard surfaces like driveways, sidewalks, roofs, and streets prevent infiltration. This creates stormwater "run-off" and is why communities have storm sewer systems. Catch basins, underground pipes, and outfalls manage rain & snow by moving it elsewhere. Storm drains keep roads safe and help prevent flooding but can also create problems.
How Groton Manages its Stormwater
- Notice of 2022 MS4 Annual Report* :: Public Comment Closed :: Look for the 2023 draft in Feb. 2024
- MS4 2022 Annual Report FINAL*
- MS4 2022 Annual Report Catchment Ranking Addendum FINAL rev 3/31/23
- Town of Groton Stormwater Management Plan April 1, 2017
- MS4 2021 Annual Report*
- MS4 2021 Annual Report Catchment Ranking Addendum*
- MS4 Outfall Map*
- Catch Basin Cleaning
"Illicit Discharges" to Storm Drains (Illegal Dumping or Accidental Releases)
- How to Report Illicit Discharges
- Illicit Discharge Detection and Elimination (IDDE) Program
- Illicit Stormwater Discharge Ordinance No. 288
- Find Planning or Zoning Commission or Inland Wetland Agency Public Mtg. Notices, Agendas, &/or Minutes
- Check on project applications that disturb 1+ acres & do not require land use approval