GBA is a pioneer in the field of hydrographic surveying and has a broad range of experience and background surveying for every major port in the United States. We have provided hydrographic and topographic surveys for federal, state and local agency clients and private industry clients.

Our primary focus is on port and offshore navigation channel dredging projects, harbor and river surveys, and beach nourishment projects. As a member of the U.S. Army Corps of Engineers’ Industry Hydrographic Surveying Committee, GBA helped to establish the standards for dredging payment surveys in the U.S.

In addition to the U.S. Army Corps of Engineers and private dredging contractors, GBA has provided surveys as design and construction management tools to most of the nation’s port authorities.

GBA’s survey team includes professional land surveyors, NSPS-THSOA certified hydrographers, and licensed UAV/drone pilots.