Willett, Hofmann & Associates, Inc. has the capability to perform underwater mapping using digital echo sounder technology from Odom Hydrographic Systems. We couple the echo sounder with our survey-grade GPS to get precise mapping of any underwater topography, such as stream beds, river beds, lake bottoms and lagoons. With a depth range of 1/3 meter to 600 meters, we can easily map any local water-way or lake bottom. Our echo sounder and GPS equipment are mounted in our 16-foot flat-bottom boat, which has a gasoline outboard motor as well as an electric motor to allow us to adapt to any project requirement.