Hydrographic Surveying


A Dennis Corporation Surveyor performs hydrographic survey in Horry County, South Carolina.

Dennis Corporation staff has personal experience acting as project manager for numerous hydrographic coastal surveys from Wilmington, NC to Jacksonville, FL and many inland specialty projects. Project highlights include the maintenance dredging for the State Ports Authority Georgetown Terminal. The project scope included performing conditional, pre and post dredge surveys for the shipping berths along the terminal docks on a bi-annual basis. The results of the completed survey were then used for quantities to determine the dredging fee.

An average time for the completion of hydrographic survey is one to two weeks from the notice to proceed. All hydrographic surveys are tied to the State Plane coordinate system and the vertical datum.



Our survey department consists of experienced employees with a wide variety of competent skill sets, maximizing our efforts to keep projects under budget and on schedule. Our survey department has in-house technology with the latest Land Development Desktop, Microstation/Geopak platforms and other software to maintain seamless file integration and reference. Each technician is equipped to utilize robotic total stations for maximum accuracy, survey-grade GPS for efficiently and effectively completing common tasks and mapping-grade GPS for field reconnaissance of basic geometries over a large distance or area.
Dennis Corporation’s survey department specializes in Base Mapping, Route Surveys, Geomatics and Survey Control Networks, Construction Layout, Boundary/Right of Way/Easement Surveys, As-Builts/Topographic Surveys, Utility Location Surveys, Mapping Grade Surveying for GIS, Bathymetric/Hydrographic Surveys and CAD Drafting.

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