Non-tidal Permits
Licenses for Activities in Non-Tidal Waters
Non-tidal refers to inland wetlands, watercourses, and non-consumptive diversion projects.
Supporting documents can be found on our LWRD Forms and Instructions page. All permit applications require the submission of a transmittal form and fee (if applicable). The transmittal and fee must be submitted before the application, however, do not submit the transmittal and fee until the application is complete. Please see Instructions for Completing the Transmittal Form for guidance.
Disclaimer: DEEP only regulates inland wetlands on state land or associated with state action. All other inland wetland projects are regulated at the municipal level. Please view our Inland Wetlands and Watercourses pages for more information. Projects in or adjacent to non-state managed inland wetlands may still require permits from other state programs.
The following permit applications all require the same application, attachments, and follow the same instructions:
- Section 401 Water Quality Certificate (Non-tidal);
- Pre-Construction Notification, USACE General Permits for CT;
- Inland Wetlands and Watercourses;
- Water Diversion Non-Consumptive
Application: Form L (09/02/20) Word, PDF
Instructions (12/13/21)
Supporting documents needed for this application are:
Attachments 1, 5, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 23, 28, 30, 41, 42
Additional Information:
Inland Wetlands (State agencies only)
Non-Consumptive Water Diversion (Public, municipal, and state agencies)
General Permit for Water Resources Construction Activities (DEEP-IWRD-GP-013); Re-Issued 06/04/2024; Briefing Document
Activities 1-5: Maintenance Plans and Activities on State Property:
Application: Form M (05/20/24) PDF
Supporting document needed for this application is: Attachment 14
Additional Information: Water Resource Construction Activities
Activities 6-9: Infrastructure, Upgrades, and Conservation Activities:
Application: Form N (07/11/24) PDF
Supporting documents needed for this application are:
Attachments 8, 9, 10, 14, 16, 18, 20, 23
Additional Information: Water Resource Construction Activities
Activity 10: Infrastructure Projects with Interagency Coordination:
Application: Form O (07/11/24) PDF
Supporting documents needed for this application are:
Attachments 29, 31, 32
Additional Information:
Water Resource Construction Activities
Notice of Correction of Clerical Error
Please note that the above resources apply to state permitting only. For information related to Municipal Inland Wetland Agencies, please visit our Inland Wetlands and Watercourses home page. You can also check out our new Roles and Responsibilities outreach poster, which gives a brief overview of the varied levels of inland wetland management we have in Connecticut.
LWRD Regulatory Program Overview
Content last updated on June 3, 2026