Your source for Great Lakes Dredging Information. You can find Notice to Navigation Interests here for Lake Superior, Lake Michigan, Lake Huron, Lake St. Clair and Western Lake Erie. Detroit District Dredging Information, Microstation and Acrobat Navigation Surveys. For the latest information, please contact Bill ODonoghue, Chief, Technical Services Branch at (313) 226-6797. Our FAX number is (313) 226-3519.
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