Wedge Creek Barrier
Constructed: 2010
Classification: Lake
Smith-Root pulsators drive a pair of barriers retrofitted into rectangular concrete culverts to stop invasive carp from reentering a restored lake.
This barrier location is one of several commissioned by the Shell Rock River Watershed District to protect lakes from reinfestation by invasive asian carp.
The barriers are inside a pair of existing 10 foot x 6 foot concrete culverts. The culverts were dewatered and lined in the barrier section with HDPE sheets. Six U-shaped steel flat bar electrodes were mounted spaced 48 inches apart. Three 1.5 kW pulsators operate on the four inner electrodes in each culvert while the outer electrodes act as parasitic electrodes to reshape the field. Steel gates at each end provide security. Electronics are housed in a nearby small building.
Services Provided
- Coordination with Shell Rock River Watershed District and civil engineer G-cubed
- Electrical and electronic design of the pulsators and power supply systems
- Supply of electronics
- Regular maintenance
Gallery
Click image to enlarge.
Location: Albert Lea, Minnesota
Site Characteristics
| Pulsators | Pulsator Qty | Power Output | Water Depth | Waterway Width | Water Velocity | Conductivity |
|---|---|---|---|---|---|---|
| 1.5kVA POW | 6 | 9.0 kW max. | 0-5 feet | 10 feet (per culvert) | 0-3 ft./s | 650 µs/cm max. |
Specifications subject to change without notice.