A man was rescued near Harsens Island on Saturday afternoon after his airboat flipped over in the water.
It happened at about 4 p.m. in the 7000 block of the Middle Channel of Harsens Island.
According to the St. Clair County Sheriff's Office, Daniel Watson, 34, lost control while returning from San Souci Island.
Police said a nearby resident heard Watson yelling for help and came to his aid.
Watson was treated for mild hypothermia and taken to a family member's home, police added.
The airboat sank about 30 feet to the bottom of the channel. Police said they will attempt to locate the boat and remove it from the water on Sunday.
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