The Village of Slinger was having issues meeting new phosphorous reduction requirements in their Wastewater Treatment Plant (WWTP). At the same time, the City of Hartford was experiencing severe streambank failure through a 400-foot section of the Rubicon River. The bank’s failure was a threat to human health and safety because it was near a private development. The Village of Slinger worked with the DNR and the City of Hartford to form a unique trading agreement where Slinger would design and install the project in the City of Hartford in exchange for receiving phosphorous credits at their WWTP. The goal of this project was to stabilize 400 linear feet of streambank along the Rubicon River utilizing natural channel design.
R/M evaluated the current state of the streambank within the project area through a field survey and stream survey. The results of the field work were evaluated utilizing HEC-RAS and Civil 3D. The modeling results were utilized to develop a focused approach to stabilize the streambank using natural design techniques that included grading the streambank, restoring appropriate stream morphology, installation of rootwads (at the outside bend of pools), and planting native grasses and wildflowers. Designing this stabilization project did have its challenges, because of it being located in a restricted corridor R/M was able to overcome this through the establishment of easements that allowed this project to continue smoothly.
The project utilized integrated bank treatment shoreline stabilization as well as native plantings. Existing trees that were removed were reutilized as rootwads providing habitat in the creek and reducing cost for stone. The final results were a stabilized streambank with rootswads and native grasses allowing it to look like a native stream.
Services
Field Survey
Stream Survey
Hydraulic and Hydrologic Modeling
Stream Design
Streambank Stabilization
Waterway and DNR Trade approvals