Breakwater: Generic/unknown
Conduit: Ground level, penstock
Conduit: Underground, penstock
Conduit: Ground level, other
Conduit: Underground, other
Dam: Other
Dyke/levee: Generic/unknown
Lock gate: Generic/unknown
Pond partition: Generic/unknown
Seawall: Generic/unknown
Wharf: Generic/unknown
Water disturbance: Falls
Water disturbance: Rapids