нэмэгдэл ус хаюур
дополнительный водосброс
A secondary spillway designed to operate only during exceptionally large flood flows. Allows inflows from large storms to be released from the reservoir before the water level raises high enough to overtop the dam.
Source John M. Sharp, Jr. 2007 Department of Geological Sciences Jackson School of Geosciences The University of Texas Austin, Texas, USA