Smith-Root constructed a concrete weir to include a barrier for exclusion of invasive species, particularly carp.
Location:Heron Lake, Minnesota
Smith-Root designed and constructed this weir and upstream barrier for the Minnesota Department of Natural Resources as part of the Heron Lake restoration project. The deck and the sloping sides were poured in place using an Insulcrete™ mix.
Seven steel flat bar electrodes are located 36 inches apart in slots in the concrete. The barrier is energized by six pulsators.
The side walls were later fitted with combs to prevent fish from skating over the shallow edge water.
Coordination with Minnesota DNR
Structural design of weir
Electrical and electronic design of the pulsators and power supply systems