When making decisions for managing this dredged material, state and federal agencies and port authorities must navigate a complex web of environmental and logistical challenges. This process excavates about four million cubic yards of sediment a year, which then needs somewhere to go. Across the United States., federal navigation channels and harbors are maintained through dredging, or removing sediment from the bottom. Keeping those waterways operational requires maintaining navigation channels and harbors at a safe depth for ships. On the Great Lakes, cargo ships travel a system of hundreds of miles of waterways to deliver critical goods to domestic and international markets. Dredging equipment conducting maintenance dredging in a navigational channel (Photo Credit: U.S.
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