Emergency crews were called to Haddam Meadows State Park on Sunday for the report of a missing swimmer.
The call was reported before 5:30 p.m.
Crews are searching for a 17-year-old from Meriden who they said got swept away from shore.
Several local fire departments along with the Department of Energy and Environmental Protection responded to the area and are searching for the teen.
Connecticut State Police said its Trooper One helicopter and dive team were also requested to the Haddam Meadows boat launch.
The U.S. Coast Guard has also been called in to help search.
Haddam Meadows State Park is located on Route 154 and comes up on the west bank of the Connecticut River.
Stay updated with Eyewitness News as more information becomes available.
Copyright 2017 WFSB (Meredith Corporation). All rights reserved.