eTrac has the ability to set benchmarks and establish horizontal and vertical control while adhering to NOAA and USACE standards. Static GPS sessions and differential leveling runs are used to establish local control with most projects. Topographic survey services are available to support coastal mapping projects, including shoreline monitoring, dune restoration and buried beach utilities such as manholes and transformers. Topo surveys are used independently or combined with multibeam datasets for a virtually seamless overlap of the two. By combining multibeam sonars with topographic data, eTrac is able to create merged point clouds throughout the coastal environment, regardless of waterline location.