Channel geometry for upstream and downstream cross sections at selected bridge sites in Montana, 2021

The U.S. Geological Survey, in cooperation with the Montana Department of Transportation (MDT), collected cross-section data on the upstream and downstream sides at...美国地质调查局（U.S. Geological Survey）与蒙大拿州运输部（Montana Department of Transportation，MDT）合作，在……的上下游侧采集了横断面数据。