State representatives are raising concerns over whether troopers patrolling Missouri's waterways were properly trained following a 2011 highway and water patrol merger.

During a hearing Wednesday at the Capitol, lawmakers questioned Missouri State Highway Patrol officials on how much training troopers receive before heading onto the water.

The review comes after the death of a 20-year-old man who drowned May 31 in the Lake of the Ozarks. A state trooper had arrested the man for drunken boating and handcuffed him before the man slipped into the water and out of his lifejacket.

The hearing is the first of several intended to review management and training in the Highway Patrol since the water patrol was folded into its operations.