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.