In September 2015, Quantum Spatial (QSI) was contracted by the United States Army Corps of Engineers (USACE) to collect topobathymetric Light Detection and Ranging (lidar) data in the fall of 2015 for selected areas of the St. Marys River in Michigan and Ontario, Canada. Traditional near-infrared (NIR) lidar was fully integrated with green wavelength return data (bathymetric) lidar in order to provide seamless and complete project mapping. Data were collected to aid USACE in assessing the topographic and geophysical properties (channel morphology and topobathymetric surface) of the study area. Points were classified into the following categories: 1 = unclassified, 2 = ground, 7 = noise, 9 = water, 13 = submerged structures, 14 = above-water structures, 25 = water column, 26 = bathymetric bottom, 29 = submerged object. Data described here are point cloud data for an integrated topobathymetric model. The derived DEM is also available through the NOAA Digital Coast. The data received by NOAA from USACE did not include a compliant metadata record. This record was generated from information in the lidar report. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.