Connecticut River Fishways: Model Studies
attraction, Connecticut River, dams, diffuser, fish passage, fishways, head loss, intake, model studies, slotted weir, Turners Falls, Vernon Station, weir
Journal or Book Title
Journal of the Hydraulics Division, Proceedings of the American Society of Civil Engineers
The fishways at the Vernon and Turners Falls Dams were optimized by use of hydraulic model studies. In both cases, slotted weirs were modified so that a better head loss distribution was obtained. In addition, the diffusers were modified so that a better head loss distribution was obtained. In addition, the diffusers were modified to produce acceptable exit face velocity distributions. At Turners Falls, the fish entrance was modified to produce velocity conditions known to be acceptable to the two migrating species of fish. At Vernon Dam, flow conditions were optimized at the fish exit and attraction water intake. Modeling of these fishways has resulted in design changes that should improve fish passage and minimize water consumption.