WYOMING, Iowa — Wylie Treadway, 52, of Wyoming drowned Sunday when he and Douglas R Berkhoff, 60, of Davenport fell overboard when their 14-foot flat bottom rowboat overturned in a backwater on the Wapsipinicon River.

The men had been fishing on a backwater of the Wapsipinicon River next to the bridge on County Road X75 about 3 miles south of Wyoming, the Iowa Department of Resources said in a news release.

According to the investigation, Treadway stood up, leaned on the same side of the boat as Berkhoff and the boat overturned, putting both men in the water. Berkhoff grabbed a life jacket and swam to shore.

The Jones County Sheriff’s Office was notified at about 11:15 a.m. Sunday. Treadway was recovered about 90 minutes later.

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The Jones County sheriff, Anamosa and Oxford Junction fire departments and the DNR responded.