Connacht Harbour sits beside Portumna Bridge on the west side of the Shannon channel and serves as a busy navigation centre on the lower river.

Originally built by the Inland Steam Navigation Company, it retains several industrial heritage features, including a well-maintained cast-iron crane and historic storage buildings.

The harbour is now home to Emerald Star cruiser hire, Waterways Ireland, a private marina, and a chandlery, with public access also available at the moorings.

New floating jetties have been installed upstream and downstream of the bridge to improve safety and convenience for boaters awaiting bridge openings.