WYDOT needed the Snake River channel surveyed primarily for scour analysis relating to the upcoming bridge project. WWC and WYDOT worked collaboratively to develop the surveying techniques to be used at the site. The techniques included sonar to survey the channel bottom. WWC collected data using a sonar attached to both remote control boats and a kayak. The river channel was also measured using conventional and GPS survey equipment.  The outcome was a detailed map of the channel bottom.