Shiawassee River

A downstream barrier experiment conducted by Great Lakes Science Center used a Smith-Root temporary fabric barrier to stop round goby.
  • Location: Michigan
  • Commissioned: 2000
  • Type: Experimental

Project description

After laboratory feasibility testing, an experimental barrier was placed on the bed of the Shiawassee River, between two nets. The barrier fabric was 20 feet wide and contained four wire rope electrodes. Marked round gobies, a benthic species, were placed above the barrier, and a series of tests compared movement of the gobies downstream with the barrier on and off.

No live gobies were found downstream in the tests with the barrier operating at prescribed settings. The barrier was judged functional for preventing downstream movement of round gobies.

Services provided

  • Supply of temporary barrier
  • Supply of electronics

Site characteristics

  • Pulsators: 1.5kVA POW
  • Pulsator Qty: 3
  • Power Output: 4.5 kW max.
  • Water Depth: 2-3 feet
  • Waterway Width: 65 feet
  • Water Velocity: 0.03-0.10 ft./s
  • Conductivity: 570 µs/cm max.