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Hydrographic Surveys

Hydrographic Surveys (Soundings)

Landmark Surveys is one of the few providers of Hydrographic Surveys within New Jersey. The purpose of Hydrographic Surveys is to measure and describe under water features which affect maritime navigation, marine construction, and dredging.

Hydrographics Landmark Surveys
Hydrographics Landmark Surveys

Our unique advantage in performing hydrographic surveys is the state-of-the-art technology we employ. Our fleet includes two GPS equipped boats for recording sounding data to determine navigations obstruction, dredging depths, and quantity of materials removed and or placed for payment purposes. Using tidal wave heights and we can certify minimum bridge deck clearance for maritime boat traffic.

Hydrographic Survey Services Include:

  • Bridge water survey's pre-construction and post construction to show channel clearances for shipping.
  • Dock permits
  • Dredging quantities
  • Single-Beam & Multi-beam Hydrographic Surveys
  • Pre-Dredging & Post Dredging Surveys
  • Underwater Obstruction / Site Investigations
  • Bridge Deck Clearance Surveys

Services