Water tunnel
tunnel (below-ground channels) used to transport water
Hennepin Island tunnel
Hezekiah's Tunnel
Orange–Fish River Tunnel
Vespasian Titus Tunnel
New York City Water Tunnel No. 3
San Jacinto Tunnel
Delaware Aqueduct
Moffat Tunnel
Bottini di Siena
qanat
Alva B. Adams Tunnel
Bosporus Water Tunnel
Canning Tunnel
drainage tunnel
Hoffman tunnel
Montgomery Bell Tunnel