Submitted by Town of Haddam
(June 17, 2025) — The U.S. Army Corps of Engineers has issued a thirty-day public notice for an Aquatic Invasive Plant Control Research Demonstration Project in July 2025 involving twelve new sites in the Lower Connecticut River Valley, in addition to five sites that are already part of the Project.
The purpose of the Project is to provide a field-scale demonstration of technology developed to evaluate the effectiveness of aquatic herbicides to manage monoecious hydrilla in high water exchange environments, such as the tidal, riverine environment of the Lower Connecticut River. The Project will evaluate herbicide efficacy, optimal timing of treatment, non-target impacts, and herbicide concentration-exposure time requirements for effective control of hydrilla. The Project will also provide interim control of hydrilla at sites in the Lower Connecticut River Watershed for the duration of the Project to demonstrate and understand effective management practices.
The twelve additional treatment sites are: (1) Chester Creek in Chester; (2) Deep River in Deep River; (3) Hamburg Cove in Lyme; (4) Joshua Creek in Lyme; (5) Mattabesset River in Middletown; (6) Parker’s Point in Chester; (7) an expanded Portland Boat Works in Portland; (8) Post and Pratt Coves in Deep River; (9) Salmon River in East Haddam; (10) Selden Creek in Lyme; (11) Lake Pocotopaug in East Hampton; and (12) Pameacha Pond in Middletown. More information can be found at the link below:
