This report presents the methods used, data collected, and hydrodynamic model results from the USGS and ADOT&PF study to collect bathymetric and topographic data for a hydrodynamic model of the Tanana River where bridge 505 of the Alaska Highway makes its crossing. The USGS collected an extensive bathymetric and hydraulic data set in the vicinity of the bridge using ADCP, RTK-GPS, and an echo sounder. These data, along with survey ...