Hydrographic Surveying


Hydrographic Surveying Services

  • Highways, Transportation Systems, and Structures
  • Single-beam
  • Multi-beam
  • Side-scan
  • Bottom/Channel Condition
  • Dredge Monitoring
  • Pipeline Location


Escambia Bay

RES assisted the State of Florida Department of Transportation (FDOT) in the completion of a hydrographic survey on a portion of Escambia Bay near Pensacola, Florida.

The surveyed area began at approximately four miles south of the 1-10 crossing of Escambia Bay and extended North to a point approximately one mile north of the 1-10 Bridge. The survey was completed using differential global positioning systems, “single beam” acoustic sounders, electronic motion compensation systems, an electronic water level monitoring system and electronic guidance, data collection and processing software. Electronic course lines were established tracking east to west and parallel to the 1-10 Bridge at varying intervals as defined by FDOT. The soundings were furnished to FDOT in digital format for further processing to prepare a hydraulic model of Escambia Bay to study the effects of Hurricane Ivan. This data was ultimately used to update nautical charts within the study area of Escambia Bay.

Carrollton Bend Revetment

RES assisted the New Orleans District Corps of Engineers in determining if any obstructions existed in the area of Carrollton Bend Revetment.

Carrollton Bend Revetment is located on the left descending bank of the Mississippi River near the New Orleans District Corps office. The hydrographic survey was completed using a multi-beam bathymetric survey with simultaneous side scan of an area approximately 4000 feet by 600 feet adjacent to the revetment. The survey also extended topographically onto the upland section of the revetment. The multi-beam portion of the study was completed using an Odom Echoscan 200 Kilohertz Multi-beam Transducer mounted on a 26 foot survey vessel. The results of the survey provided clear evidence of a sunken vessel along the revetment.

Emergency Pascagoula Channel Opening

Hurricane Katrina devastated the Mississippi Gulf Coast, wiping out entire communities, severely damaging the oil refinery at Pascagoula and closing the Pascagoula River Ship Channel.

RES assisted defense contractor Northrop Grumman in the immediate opening of the Ship Channel, in order to service their shipyard, but also to allow ships to enter the Port bringing much needed petroleum fuels to the area. In an effort to assist in this effort, RES dispatched the survey vessel Captain Joe, equipped with an Atlas Fansweep 20 Multi-beam Transducer to survey 16 miles of the Pascagoula Channel and surveys of the Launch/Mooring areas within the Northrop Grumman Shipbuilding Facility. The survey work was conducted continuously 24 hours a day until the Ship Channel was reopened.