Michigan v. Ohio
Headline: Lake Erie boundary ruling fixes the Ohio–Michigan state line through Turtle Island, upholds the Special Master’s map, and requires Michigan to pay the suit’s costs.
Holding: The Court overruled Michigan’s exceptions, adopted the Special Master’s boundary description, and ordered Michigan to pay the suit’s costs.
- Establishes the exact Ohio–Michigan boundary line through Turtle Island in Lake Erie.
- Determines which state’s laws and enforcement apply along that line.
- Requires Michigan to pay the suit’s costs, including the Special Master’s expenses.
Summary
Background
A legal dispute between the State of Ohio and the State of Michigan concerned the precise location of their boundary line in Lake Erie near Turtle Island. A Special Master filed a report on November 9, 1971, identifying a historic point in Maumee Bay and a course for the line based on 1836 bearings. Michigan filed exceptions to that report, and the matter reached this per curiam decree after argument on the exceptions.
Reasoning
The core question was where the state line runs through the lake. The Court accepted the Special Master’s findings and overruled the exceptions filed by Michigan. The decree describes the boundary as a line drawn from the point in Maumee Bay corresponding to the north cape as located in 1836, on a bearing North 46° East from a true meridian, passing over the center of the existing circular concrete seawall on Turtle Island and continuing to the point where it meets the United States–Canada boundary. The decree also specifies how the 1836 north cape is to be located using intersecting bearings from Post 71 and the Turtle Island seawall.
Real world impact
This order fixes which state controls the waters and territory along that precise line in Lake Erie, resolving competing claims and clarifying which state’s laws and officials apply in that area. The Court also directed that Michigan bear the costs of the suit, including the Special Master’s expenses, creating a direct financial consequence for Michigan. The ruling finalizes this portion of the boundary dispute.
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