Scope of Work:
Infrastructure Alternatives was contracted by the Lake Sinissippi Improvement District to design and construct an erosion control berm which would isolate a 40-acre portion of man-made Lake Sinissippi in an effort to remediate a marsh wetland environment that had been deteriorated by a non-game fish species.
Infrastructure Alternatives deployed almost 800 lineal feet of 30 foot circumference Geotube® containers in a straight line to connect two shorelines of a bay. Infrastructure Alternatives utilized a hydraulic dredge to remove sediment from the lake bottom, increasing the navigable depth of the lake. The dredged sediment was then used to fill the Geotube® containers to bring their height above the water surface such that the wetland area was isolated from the rest of the lake. Additional dredged sediment was then pumped in behind the Geotube® containers to reduce the depth of water in the wetland area and provide a foothold for native flora.
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-occurring wetland flora to restore the natural habitat.
Since the conclusion of the project, the Geotube® containers 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 Geotube® berm is completely rehabilitated with natural flora taking hold.
Project Photo Gallery
- Dredging the lake
- Geotextile tube being filled in the lake
- Geotextile tube breaking surface of the water
- Geotextile tube barrier, separating the lake from a wetland area
- Aerial view of the geotextile tube boundary