Lake Christina

Smith-Root constructed a concrete culvert to include a barrier for exclusion of invasive species.

Location: Fergus Falls, Minnesota
Commissioned: 1991

Type: Lake

Project description

This turn-key project included the design and construction of a 10 foot x 5 foot rectangular concrete culvert. Seven steel flat bar U-shaped bolted electrodes are located three feet apart in slots in the Insulcrete™ walls and base slab.

Steel gates at each end provide security. At the downstream end, an additional fish gate automatically drops down in the event of a power loss. Electronics are housed in a nearby small building.

Services provided

Coordination with Minnesota Department of Natural Resources
Structural design of culvert
Electrical and electronic design of the pulsators and power supply systems
Construction of culvert and electrodes
Supply of electronics
Regular maintenance

Site characteristics

Pulsators: 1.5kVA GFFB
Pulsator Qty: 6
Power Output: 9kW max.
Water Depth: 0-4 feet
Waterway Width: 10 feet
Water Velocity: 0-2 ft./s
Conductivity: 350 µs/cm max.