Part of the Elan Aqueduct (nprn 95469), itself part of the Elan Valley Water Scheme (nprn 96459), the Nantmel Conduit continues the route near Nantmel village. It runs from the Dulas Syphon Outlet (nprn 309618), including Nantmel Dingle Aqueduct (nprn 309619), Maes-y-gelli Crossing (nprn 309620) and Carmel Bridge (nprn 309621), to the Clywedog Syphon Inlet & Overflow Chamber (nprn 309622). Nantmel Dingle Aqueduct is a stone built eight-arched structure.

B.A.Malaws, 08 December 2003.