ус дамжуулах хоолой
водовод
A closed channel to convey water through, around, or under a dam.
Source Guidelines on Instrumentation on Large dams by Central Water Commission Ministry of Water Resources, River Development & Ganga Rejuvenation Government of India, June 2017, p.71яндан хоолой
трубопровод
(1) a high permeability pathway, most commonly associated with dissolution features (commonly considered to have a greater range than well scale and be visible to the naked eye); (2) any open or closed channel for the conveyance of water; (3) a pipe or culvert through which utility lines or wires are run.
Source John M. Sharp, Jr. 2007 Department of Geological Sciences Jackson School of Geosciences The University of Texas Austin, Texas, USA