Scope of Work
IAI was contracted by the Lake Sinissippi Improvement District to dredge the lake, and design and install an erosion control berm which would isolate a 40-acre portion of man-made Lake Sinissippi from an adjacent wetland. The project was conducted to remediate the marsh wetland environment, which had been deteriorated by a non-game fish species.
IAI deployed almost 800 lineal feet of 30 foot circumference geotextile tubes in a straight line to connect two shorelines of a bay. IAI dredged sediment from the lake bottom to increase the navigable depth, and utilizing the dredged sediment to fill geotextile tubes. The dredge pumped sediment slurry into the geotextile tubes, to bring their height above the water surface, and isolate the wetland area from the rest of the lake. IAI then dredged additional sediment, pumping the material behind the geotextile tubes to fill in the wetland area, and provide a foothold for native plants.
It was then possible for the lake association to work in conjunction with the State of Wisconsin’s Department of Natural Resources and the local chapter of a national sportsperson’s club to eradicate the non-game fish in the wetland and plant naturally occuring flora, to restore the natural habitat.
Since the conclusion of the project, the geotextile tubes which were installed to form the barrier between the wetland and the lake have remained in place, despite harsh Wisconsin winters and heaves of ice sheets. And the wetland area behind the geotextile tube berm is completely rehabilitated with native plants taking hold.