Hydrographic Survey Services

We have our own in-house hydrographic survey capabilities to support our dredging operations and marine construction activities. JJM has over twenty years of hydrographic survey experience in support of dredging operations. The methodologies have evolved with the rapidly changing and improving technologies. JJM dredging projects now routinely involve a pre-construction hydrographic survey, creation of a 3-D digital model of the dredge area with an overlay of the design dredge cut profile, and the use of up to date GPS/RTK positioning equipment and dredging software to ensure accurate dredging to the design profile.

  • Bathymetric Surveys
  • Multi Beam & Sidescan Sonar
  • Marine Equipment Positioning
  • Sunken Object Detection
  • CAD & Mapping
  • Pre-Design Consultation
  • Construction Engineering & Planning
  • Pile Driving
  • Environmental Protection & Remediation
  • Marine Terminals
  • Boat Marinas
  • Sewer Outfalls
  • Pre and Post Dredge Calculations
  • Scour Protection
  • Breakwater Replacement
  • Flood Protection

Hydrographic Survey

Hydrographic surveys support the activities of many important industries, from transportation to construction to environmental remediation. JJM has extensive experience providing surveys for dredging, submerged pipe, piling, marine salvage, and more. Taking advantage of state-of-the-art technologies JJM can provide you with customized solutions to meet your data needs.


With the latest technologies and over 20 years of experience in support of a variety of marine and coastal construction projects, JJM can provide you with cost-effective solutions while improving your project’s safety and efficiency.