Streambank Revitalization Searles Creek

Streambank revitalization was a major component of this project. Because phosphorus is naturally occurring in soil, streambank erosion can cause large quantities of phosphorus-loaded sediment to enter the waterways, ultimately leading to algae bloom and the die-off of aquatic life.

After a comprehensive study of all area watersheds, it was determined that the most impactful starting point for the project was at Searles Creek, a sub-watershed of the Sugar River. Searles had been identified on Wisconsin’s 303d list of impaired waters and was considered a major contributor to heavy sediment loads to Decatur Lake, once a diverse warm water fishery.

MSA agricultural and water resources engineers implemented a variety of innovative streambank stabilization practices.

1. Vegetative reinforced soil slopes (VRSS)

VRSS is a soil bioengineering technique that reintroduces plant life specifically where it will be most beneficial, helping to grow new trees, establish root networks, and prevent further soil loss, while also providing shelter and habitat for fish reptiles, birds, and aquatic insects.

2. Custom Flood Gates

These flood gates were designed and installed to stop livestock from crossing the stream in certain sensitive areas, while allowing water and canoeists or kayakers to pass through. In addition, seven new rock crossing areas (fords) were established for use by that same livestock as well as local farmers.

All streambank design and stabilization work was paid for by the City of Brodhead, with zero costs incurred by the landowners of the streambanks.