Stephen Kenneth Samson, 44, was reported missing on June 7. A dingy believed to be his capsized on the Bow River on May 27. (Calgary Police Service )

Calgary police are looking for information about a boater whose craft capsized in the Bow River last month.

On May 27 there was an emergency call about a flipped-over dinghy near the 2200 block of Eighth Avenue southeast.

A witness said he saw a man trying to get back into the dinghy. But he eventually slipped under the water and wasn't seen again.

An extensive search was conducted, but only the dinghy and an oar were found, police said. 

The family of 44-year-old Stephen Kenneth Samson — who goes by Ken — reported him missing on June 7.

Anyone with information is asked to call police or Crime Stoppers.