Heron Lake Barrier
Constructed: 1991
Classification: Lake
Smith-Root constructed a concrete weir to include a barrier for exclusion of invasive species, particularly carp.
Smith-Root designed and constructed this weir and upstream barrier for the Minnesota Department of Natural Resources as part of the Heron Lake restoration project. The deck and the sloping sides were poured in place using an Insulcrete™ mix.
Seven steel flat bar electrodes are located 36 inches apart in slots in the concrete. The barrier is energized by six pulsators.
The side walls were later fitted with combs to prevent fish from skating over the shallow edge water.
Services Provided
- Coordination with Minnesota DNR
- Structural design of weir
- Electrical and electronic design of the pulsators and power supply systems
- Construction of weir and electrodes
- Supply of electronics
- Regular maintenance
Gallery
Click image to enlarge.
Location: Heron Lake, Minnesota
Site Characteristics
| Pulsators | Pulsator Qty | Power Output | Water Depth | Waterway Width | Water Velocity | Conductivity |
|---|---|---|---|---|---|---|
| 6.0kVA GFFB | 6 | 36kW max. | 0-6 feet | 80 feet | 0-6 ft./s | 1380 µs/cm max. |
Specifications subject to change without notice.