Hydrographic Survey

BFM is experienced in all facets of hydrographic surveying, including work in the Mississippi River as well as water erosion work. BFM uses Hydrotrac equipment and software. 


The primary use of hydrographic surveys is for nautical charting. This requires the precise location of least depths on dangers to navigation and depths significant to surface navigation. The precise location of aids to navigation is also required.


Hydrographic Surveys may be conducted to support a variety of activities: nautical charting, port and harbor maintenance (dredging), coastal engineering (beach erosion and replenishment studies), coastal zone management, and offshore resource development. The one data type common to all hydrographic surveys is water depth. Of additional concern to most surveys is the nature of the sea floor material (i.e. sand, mud, rock) due to its implications for anchoring, dredging, structure construction, pipeline and cable routing and fisheries habitat.


All hydrographic data is collected and processed with on board computer systems which store the data in digital form and generate graphic displays of the hydrographic data (GPS observations are used to establish NAVD 88 elevations on water surface).