GRAEF-USA Inc.

Little Menomonee River Realignment

GRAEF conducted wetland delineations, rare species surveys, and vegetation monitoring within the 100-year floodplain of an approximately 5-mile stretch of the Little Menomonee River in the City of Milwaukee, Wisconsin. The study area consisted of Reaches 1 through 5 of the Little Menomonee River from Brown Deer Road to just south of Silver Spring Drive. The focus of this Superfund Project was the clean up of a contaminated stretch of river due to leachate from a former creosote wood treatment plant. The clean up was carried out by realigning the Little Menomonee River and reseeding the new banks within the construction corridor with a native seed mix. Prior to the rehabilitation of the river, GRAEF delineated and mapped wetland boundaries and located rare species as part of the process to determine the new alignment of the river.

Following the realignment of the Little Menomonee River and plant community reseeding, GRAEF conducted vegetation monitoring along Reaches 1 through 3 to measure the progress and analyze the success of the plant community restoration. Presence of the planted species, percent cover, and species diversity were the metrics used to evaluate the success of the reseeding. This data was collected at randomly selected quadrants at set sampling transects. Comprehensive plant species lists were also collected for each of the reaches.
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LOCATION Milwaukee, WI

FACTS Services Provided: Wetland Delineation, Rare Species Surveys, Vegetation Monitoring