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OBSTRUCTION REMOVAL AND SURVEY OPERATIONS
LAKE HURON - ST. CLAIR RIVER
LAKE ST. CLAIR - DETROIT RIVER - LAKE ERIE
During each navigation season, U.S. Army Corps of Engineers' cranebarges along with survey vessels and attendant plant, perform obstruction removal and survey operations in various Federal navigation channels of Lake Huron, the St. Clair River, Lake St. Clair, the Detroit River, and Lake Erie.
Mariners are urged to use extreme caution when navigating in the vicinity of these operations.
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