DEA has a long history of providing hydrographic and land surveying services to the Walla Walla District, including several surveys on the Columbia, Snake, and Clearwater Rivers.
DEA Marine Services is providing hydrographic surveying and consulting services to the Port of Long Beach (POLB) to update bathymetry of the harbor suitable for POLB’s Harbor Sounding Program as well as to update the local Pilot database and provide data to NOAA for nautical charting.
DEA Marine Services performed high-resolution hydrographic surveys of the Houston Ship Channel and Western Galveston Bay, Texas. These surveys required the collection of more than 6,000 nautical miles of multibeam bathymetry throughout the project area in depths as shallow as two meters, some of which were surveyed with an unmanned vessel.
DEA Marine Services provided emergency response services to support the opening of critical ports following the landfall of Hurricane Ida in 2020. Under a task order for the National Oceanic and Atmospheric Administration (NOAA) Office of Coast Survey, DEA conducted 24-hour operations to survey the approaches to Port Fourchon and Houma, Louisiana.
DEA provided designs to replace two aging Interstate 84 bridges for the Oregon Department of Transportation in Troutdale, Oregon.