Maintenance Dredging of the Federal Navigation Channels in the Detroit River, Michigan.
Abstract
Resumption of the removal of polluted material will temporarily degrade the water quality and localized turbid problems are anticipated to be encountered at areas during removal of the rocky material. Disposal of the dredged material into their respective disposal sites may affect the aquatic ecosystem. Continued economic and social stability of the Great Lakes is dependent upon commercial navigation which requires maintenance dredging of the connecting channels of the Detroit River. Short-term increased turbidity and temporary water quality degradation in the area of operation are effects of maintenance dredging. Aquatic life in the dredging areas will be disturbed or destroyed. Disposal of the dredged sediments will alter existing habitats and may otherwise adversely affect organisms at the disposal areas. Dredging alternatives include: (1) alternative dredge types; (2) discontinue maintenance dredging completely; (3) dredge the connecting channels to a lesser depth; and (4) wastewater management. Implementation of the alternatives will cause economic or social impacts on the Detroit River area as well as the Great Lakes region. Alternatives to the disposal methods are examined. In terms of economic and engineering feasibility, irretrievable resources and minimal ecological disruption, the process of confined disposal of polluted materials and open water disposal for non-polluted sediments offers the best alternatives at present.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA107370
Entities
Organizations
- United States Army Corps of Engineers