A project to create an impoundment that will provide great waterfowl habitat in a wet area in Nehantic Sate Forest in Lyme will be starting in the near future. A water control structure will be placed in a dike so that water levels can be controlled. This will result in a wetland that will greatly benefit waterfowl and other wetland dependent wildlife. CWA and the Connecticut Chapter of Delta Waterfowl will be providing the funding for this project.
Concise Description of Work
Installation/ attachment of an Agri Drain inlet water control structure (24" P pipe size, 31" width, 18" depth, 36" height) to an existing schedule 80 PVC culvert (24" inside diameter/25" outside diameter) through the use of a 56-2424 coupler. Installation and anchoring of the structure will be done by the CT DEEP WHAMM Program. (Wetland Habitat and Mosquito Management) An excavator with a hydraulic hammer will be used to break off pieces of existing rocks (see picture) so that the structure can be installed square to the culvert.
The area around the structure will be backﬁlled and tamped with material located onsite. The excavator will conduct all work from an existing access road. All vehicles and equipment will be parked on the access road or in the parking area. The materials for the project are being purchased by the Connecticut Delta Waterfowl Chapter and the Connecticut Waterfowlers Association and donated to the Wildlife Division.
Manipulation of water levels will be accomplished through the use of weir boards. Water levels will be gradually raised in late summer/early fall, maintained throughout the winter, and gradually lowered in late winter/early spring (all weir boards removed). The approximate area to be inundated is < 6 acres. All maintenance of the structure will be the responsibility of the Migratory Game Bird Program. The project will beneﬁt various waterfowl species.
Scenes of the Existing Site
Aerial View of the Site
Agri Drain Inline Water Level Control Structures™ effectively manage the water table in field, wetland, pond, and a variety of other applications by setting stop logs within the structure to your desired water level height. Management allows for controlled release of outlet flow, retention of valuable nutrients, and effective flood mitigation.
CWA thanks Kelly Kubik and Rich Chmiel for their gracious contributions to this page.