Ocqueoc RiverSmith-Root constructed a weir and a barrier to prevent upstream passage of lamprey.
- Location: Ocqueoc Township, Michigan
- Commissioned: 2001
- Type: Waterway
Smith-Root designed and constructed this barrier for the U.S. Fish and Wildlife Service to prevent migration of lamprey into upstream spawning habitat.
The small weir is provided with a lip, making lamprey passage difficult. The electric barrier provides additional deterrence.
Four steel rail electrodes are located in slots in the Insulcrete™ deck and side walls. Three pulsators provide the repelling electrical field. The electronics are housed in a small adjacent building.
- Coordination with U.S. Fish and Wildlife Service
- Structural design of barrier
- Electrical and electronic design of the pulsators and power supply systems
- Construction of weir and electrodes
- Supply of electronics
- Regular maintenance
- Pulsators: 1.5kVA POW
- Pulsator Qty: 3
- Power Output: 4.5 kW max.
- Water Depth: 5 feet max.
- Waterway Width: 16 feet
- Water Velocity: 2 ft./s
- Conductivity: 330 µs/cm max.