An Alpine-Highland police officer early Tuesday found the body of a man who drowned in the Murdock Canal just south of U-92 while apparently trying to save his dog.

Pressure in a siphon pulled Mark Smith, 42, Cedar Hills, and his pet into an underground pipe about 3:30 p.m. Monday, said Utah County Sheriff's Lt. Ron Fernstedt. Smith and his 13-year-old son were walking the dog along the swift canal in the area of 6800 W. 11400 North when the black Labrador retriever jumped in.County search-and-rescue team members located the dog's body Monday afternoon a few hundred feet from where the water resurfaces. Crews ended the search for Smith about sunset but left several searchers to walk the canal bank overnight. The Alpine-Highland officer spotted the body about 2 a.m. due south of the Micron Technology plant, Fernstedt said.

Mark Thompson, Highland Water Co.'s general manager, estimated the underground pipe to be 1,000 feet long and 8 feet in diameter.