The dataset contains a hybrid bathymetric-topographic digital elevation model (DEM) of the Upper Missouri River near Wolf Point, MT. The DEM was generated within ArcGIS by compositing bathymetric data from multiple single beam sonar surveys collected between June 2018 and July 2019 with previously existing topographic data collected from airborne LiDAR into a triangulated irregular network (TIN). The resulting TIN was then manually edited and exported as a raster for use in developing a hydrodynamic model.