Legislation, Regulation & Case Law

Statues & Regulations

• Inland Wetlands and Watercourses Act (IWWA): Connecticut General Statues (CGS) Sections 22a-36 through 22a-45
• Day of receipt, notice to adjoining municipalities, etc.: CGS Section 8-7d
• Definition of farming/agriculture: CGS Section 1-1(q)

Regulation Guidance for Municipal Inland Wetlands Agencies

DEEP.Municipal.Inland.Wetland.Regs@ct.gov is the dedicated email address for the submission of municipal inland wetlands agency regulation amendment proposals and final adopted regulations.

The subject line of the email must include:

1. The year;
2. Town/City name; and,
3. Proposed/adopted regulations.

(e.g., Subject: 2020, Town of _____, Proposed Regulation Title/s).

Please attach your documents (e.g., regulations, hearing notice, and cover letter) in PDF format. A brief reply email acknowledging receipt of your adopted regulations or amendments will be sent.
Note - this email address is solely for the submission of regulations. Other correspondence or requests submitted through this email address will not be answered.
If you are unable to submit your regulations electronically, you may continue to mail a paper copy to:

Regulation Amendment Process

The following information has been prepared to assist you in the regulation amendment process. Please consult with your town attorney to ensure that your proposed amendments accomplish your objectives and conform to IWWA.

• DEEP Inland Wetlands and Watercourses Model Municipal Regulations: Fourth Edition May 1, 2006.
• Legislation and Regulation Advisories (supplement to the model municipal regulations):
  • 2016 - 2020 No advisories or changes to IWWA.
  • 2015 Advisory
  • 2013 & 2014 No advisories or changes to IWWA.
  • 2012 Advisory with accompanying Permit Timeframe Flow Chart (revised 12/23/13; does not include 2021 changes).
  • 2011 Advisory
  • 2010 Advisory
  • 2009 Advisory
  • 2008 Advisory
  • 2007-1 Advisory
  • 2006 Advisory
• Guidelines: Upland Review Area Regulations - Connecticut's Inland Wetlands and Watercourses Act (also found as Appendix C of the model municipal regulations).
• Regulatory Timelines and Flowcharts
  • Regulation Amendments
  • Application for Regulated Activity
  • Permit Revocation
  • Enforcement

Case Law

The following information was presented during DEEP's Municipal Inland Wetlands Agency Continuing Education Workshops:

Content Last Updated March 12, 2025.