The bodies of 18-year-old Trelvin Marquez Daniels and 17-year-old Tashun Lagerus Tillery were found in the Thelma Bridge area around 7:30 a.m. Wednesday.
Deputies said the pair left for the lake around 10 p.m. Tuesday to catch catfish. They were reported missing by their families around midnight.
Officers found the teen's car parked at Thelma Bridge and a fishing rod, a bucket, and keys to the car were found in an area under the bridge.
Local volunteer dive teams began a search of the water and the bodies were found by a member of the Littleton Fire Department dive team.
Deputies said the investigation remains open, but it appears there was no foul play.