It was a deadly weekend on the water, with three deaths reported in southern Ontario.

Early Sunday, a Markham man drowned while fishing with a friend along the Trent River, east of Peterborough.

The OPP say the man, who has not yet been identified, accidentally slipped into the water.

The man's body was recovered a few hours later.

On Saturday, a Clarington man died after falling from a sailboat into Lake Ontario.

Donald Allan Peever, 62, went overboard in an area of the lake south of Whitby.

The coast guard confirmed that Peever was not wearing a life jacket.

Police say that conditions were calm at the time and they have no idea why Peever fell off the boat.

Durham police are continuing to investigate.

Another man drowned late Friday afternoon in Lake Ontario.

Police say the man stripped down to his shorts and jumped into the lake from the pier near Queen's Quay and York Street in Toronto, waving to a group of bystanders.

The victim's body was pulled from the water about an hour later.

His name has not been released.

Police are also searching for a missing boater on the St. Lawrence River near Gananonque and two people who disappeared in their boat on Lake Superior about 220 kilometres northeast of Thunder Bay, Ont.