Great Lakes had cut out the ditches in mid-2019, but they had since refilled due to the viscosity of the material. The contractor completed that work in November of 2019 and returned to the Oakley Settling Basin (OSB) in April to finish up the dewatering ditches and the landscaping. The objective was to increase the storage capacity for the local drinking water supply. Great Lakes was contracted by the City of Decatur in April of 2020 to dredge sediment from the 3,093-acre Lake Decatur. A unique attachment called the Ditch Doctor turned out to be the right fit. The contractor wanted to consider a new and more efficient approach than the traditional bucket. Great Lakes Dredge & Dock Company’s Rivers and Lakes Division was faced with sediment-filled ditches and pockets of connecting standing water on a large dredging project in Argenta, Illinois.
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