Connecticut Department of Energy & Environmental Protection

DEEP headquarters at 79 Elm Street in Hartford is currently closed due to recent water damage impacting multiple areas of the building. We are working to remediate the situation and get the building back open to staff and the public as soon as possible. While the building is closed, Staff continue to work either remotely or in alternate locations. We continue to be able to receive documents via U.S. Mail or courier service, and our electronic file submittal protocols remain unchanged. For updates, please click here

Connecticut's Wetlands

tidal wetlands image    inland wetland image

Wetlands provide important ecological, economic and social benefits. They provide habitat for fish, wildlife and plants, reduce flooding, and support cultural and recreational activities. Wetlands are commonly identified using familiar terms such as marsh, swamp, bog, bank, or meadow, occurring within or near different types of watercourses. Connecticut has very specific legal definitions for tidal wetlands and inland wetlands, which differ from the federal definitions and may differ from the definitions used in other states.

Tidal Wetlands


Inland Wetlands and Watercourses

Vernal Pools

Federal Wetlands Information

National Wetlands Inventory (NWI+)

U.S. Army Corps of Engineers

U.S. Environmental Protection Agency


Content last updated on March 18, 2020.