Tetra Tech has provided coastal and offshore services to help our clients and the communities they serve improve and protect coastal and marine resources for 50 years.

Coastal communities require a combination of soft and hard engineered solutions as they adapt to the effects of climate change. Our scientists and engineers serve the entire project life cycle, from initial assessments and data collection efforts to the design and construction of critical infrastructure and restoration of coastal habitat.

Our expertise extends from the coastal zone to the deep ocean, where our researchers and engineers conduct biological field sampling, navigational assessments, geophysical surveys, and modeling analyses to safely manage operations at ports and offshore. Tetra Tech’s dedicated survey vessels and sampling equipment support our marine services.


  • Bathymetric mapping
  • Coastal and oceanographic hydrodynamic modeling
  • Coastal engineering and habitat restoration
  • Coastal water quality management
  • Emergency preparedness and response
  • Environmental permitting
  • Flood risk assessment
  • Marine energy assessments
  • Marine geophysical surveys
  • Marine protected area management
  • NEPA studies and compliance
  • Oceanographic engineering
  • Offshore field sampling and analysis
  • Offshore oil spill contingency planning
  • Sediment and dredging management
  • Threatened and endangered species assessments and consultations
  • Vulnerability assessments and climate adaptation planning
  • Waterfront and shoreline engineering

Related Projects

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High tide flooding at Honoapi'ilani Highway, Olowalu, Maui

Hawaiʻi Sea Level Rise Vulnerability and Adaptation Report

Assessing sea level rise vulnerability statewide and recommending changes to reduce exposure and increase capacity to adapt

Oil and Contaminant Spill Model

SPILLCALC Oil and Contaminant Spill Model

Providing oil and contaminant fate and behavior modeling used extensively for regulatory approvals and spill response planning

Superstorm Sandy Response Planning

New Jersey Hazard Mitigation Planning

Making communities more resilient to extreme weather hazards


Modeling and Characterization of Dredged Sediment for the Expanded COPAPE Pier, Brazil

Conducting dredging plume dispersion modeling, sediment characterization, and biota studies in Santos, Brazil

Public-private Partnership Best Practices Workshop in Naypyidaw, Myanmar

Public-private Partnership Best Practices Workshop in Naypyidaw, Myanmar

Providing public-private partnership (PPP) training to government directors who will be using PPPs to fund large infrastructure projects