• Hydrographic Surveyor

    Full Service Hydrographic Surveying Firm

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Hydrographic & Bathymetric

Full Service Hydrographic Surveying Firm Providing High Quality Surveys throughout California from L.A. to the Oregon border, from the Pacific to the High Sierra.

Meridian Surveying Engineering Inc. is a full service hydrographic surveying firm providing high quality surveys under the direct guidance of a Licensed Professional Land Surveyor. We provide the highest quality data that includes both hydrographic data and integrated land data solutions which can include boundary location where applicable. We possess the tools to incorporate High Definition 3D scanning images of the shoreline to the Hydrographic Data with our FARO (Trimble TX5) scanner. We can also provide Independent certification of dredge volumes as required by government agencies to Army Corps Standards.

Our vast experience providing a variety of surveying services means we can provide you with versatile and specific solutions to match your needs. A few of our hydrographic survey services include:

  • Hydrographic Surveys
  • Terrestrial LiDAR of Shorelines
  • River and Ship Channel Surveys
  • Emergency and Disaster Surveys
  • Marinas and Harbors
  • Environmental Surveys
  • Condition, Pre-Dredge, and Post-Dredge Surveys
  • Lake and Reservoir Surveys
  • Volume calculations
  • Sedimentation
  • Erosion sites
  • Monitoring

Why is Meridian Surveying the best choice for Hydrographic Surveys?

Certification by a Professional Land Surveyor
Independent certification of dredge quantities
Integrated Solutions to all survey related project issues
Fully insured surveying services

As with all of MSE’s services, when choosing Meridian you are selecting a firm that is responsive and experienced. We have the ability to mobilize our crews on an emergency basis. Turnaround time is extremely important, and our delivery history is one of the best in the industry. We continue to be responsive to your needs during peak seasons of business.

"In particular, I have appreciated the technical accuracy of your work in addition to your incredible responsiveness and flexibility (hours worked, weekends, etc) that the project required. Your costs are also reasonable. — Thanks!!"

URS Sacramento Emergency Delta Levee Work
Corinne De Voe Marks, P.E. — Senior Civil Engineer — URS Corporation

  • Odom CVM Echosounder
  • FARO High Definition Scanners (FARO ION, Trimble TX5)
  • Hydrolite (Seafloor Systems)
  • Trimble R8/R10 RTK GNSS, Base & Rover
  • Hypack 2013 (Hydrographic Survey Software) for datacollection and post processing
  • Trimble TSC3 data collector with Trimble Survey Controller software
  • Trimble VX and Trimble S6 Total Stations
  • Multi-Beam systems
  • Volume calculations
  • Side Scan system
  • Magnetometer
  • Cardis
  • Hypack Sweep
  • 27 foot diesel aluminum John Boat
  • 19 foot Boston Whaler Nantucket ETEC 150
  • 17 foot Boston Whaler Montauk ETEC 90
  • 12 foot launch for shallow water & envirosurveys 4HP ultra low emissions
  • Kayaks

Our surveys meet the standards of care established by the Army Corps of Engineers. We maintain the highest accuracy and regularly conduct quality assurance checks and tests, giving our clients accurate, reliable results.
Data reduction and analysis

After the field data is collected, our internal staff will examine the data for quality and prepare a deliverable. Deliverables can be provided in hardcopy or can be in a variety of GIS or CAD formats.

We can provide reports documenting the procedures used to collect and reduce data. We are flexible and ready to work with you to provide your data in the format required for your needs.

Please Contact Us for a Free Initial Consultation about your Hydrographic Surveying Needs.

Hydrographic Surveyor

Hydrographic Survey Projects

Hydrographic Surveying Projects Conducted in the San Francisco
Bay Area and California.

Project: Sacramento Emergency Levee Repair
Client: City of Redwood City
Location: Redwood City, CA
Description: Hydrographic surveying for the existing conditions survey of the Redwood Shores Lagoon System. The base map for the dredging is based on the Meridian Surveying Engineering, Inc. pre-design survey from 2005. Dredging Surveys conducted in 2010.

Project: Carmel River Lagoon
Client: RMC Water and Environment
Location: Carmel, CA
Description: A Class-1 bathymetric survey was performed of this environmentally sensitive area utilizing a combination of hydrographic, RTK, robotics and new aerial photography.

Project: Emeryville Marina
Client: Emeryville Marina, LLC
Location: Emeryville, CA
Description: MSE, INC conducted a Class 1 bathymetric pre and post dredge survey of the Marina to help with Marina redesign efforts

Project: County of Marin Paradise Cay Hydrographic Survey
Client: River Construction
Location: Tiburon, CA
Description: MSE, INC conducted a Class 1 bathymetric pre-dredge survey of the Marina to help with Marina redesign efforts and future dredging needs. Hydrographic surveying for the County of Marin Dredging project CSA-29 under supervision of the County Flood Department.

Project: Delta Levee Repair
Client: Siegfried Engineering, July 2008
Description: Description: Delta levee repair project where Meridian worked directly with another land surveying firm to create contours that included both land survey and hydrographic survey data. Both projects required Meridian's variety of tools, including real-time kinematic GPS, single beam echosounder, robotic total stations, a shallow water aluminum boat, a 17' riverboat, 4-wheel drive trucks, and more. Hypack and AutoCAD Land Desktop were used for post processing and mapping.

Project: Marina West Basin Maintenance
Client: Vortex Marine Construction, Inc.
Description: Description: Pre and Post Dredge surveying for Vortex Marine Construction, Inc. in support of the dredging operation. Meridian Surveying Engineering, Inc. also assisted in setting up the GPS interface for the machine control on the bucket dredger.

Project: Sausalito Marina
Client: Private owner
Location: Marin County, CA
Description: MSE, INC conducted a Class 1 bathymetric pre-dredge survey of the Marina to help with Marina planning and redesign.

Project: Oyster Point
Client: URS Corporation
Location: San Mateo County, CA
Description: Bathymetric monitoring program established for environmentally sensitive concrete cap with regular monitoring and reporting.

Project: Petaluma River
Client: Black and Veatch
Location: Sonoma County, CA
Description: Class-1 Bathymetric Survey of the Petaluma River integrated into their Surface Water Master Plan.

Project: San Mateo-Hayward Bridge Seismic Retrofit
Client: General Construction Company, Seattle Washington
Location: San Francisco Bay, CA
Description: Class-1 pre-construction bathymetric survey and conditions mapping.

Project: Emergency Delta Levee Repair Hydrographic Survey
Client: URS Corporation, October 2006
Description: This mapping effort was contracted by the URS Corporation for their work with the Department of Water Resources, Emergency Levee Repairs. The project required a quick response time due to the anticipated rainstorms of winter. We successfully completed the project on time.

Project: Hunters Point Pier Demolition, 2011
Client: CKY, Inc (US Navy)
Description: Meridian Surveying Engineering, Inc. provided a signal beam hydrographic survey of all the docking bays at the Hunters Point Naval Shipyard. Also in support of the pier demolition; a magnetometer and a multi-beam survey where provided to insure the safety of the demolition plan. At the end of 2011 the same survey will be conducted to insure the pier are removed and not disposed of in the San Francisco Bay.

Project: PGE Crane Valley Dam 2011
Client: Parsons Engineering
Description: Meridian Surveying Engineering, Inc. provided a signal beam hydrographic survey of the Crane Valley Dam (Bass Lake) for the dam's safety modifications

Project: Carmel River

Project: Union Valley Reservoir in the High Sierra

More Surveying Services

FEMA Certificates

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ALTA/NSPS Surveyor

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Settlement Monitoring

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HD 3D Laser Scanning

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Drone Surveyor

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Hydrographic/Bathymetric Surveys

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Expert Witness

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Topographic/Landscape Survey

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Property Survey

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SFO/SFIA Surveyor

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ADA Surveying

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Crane Cert Surveys

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Specializing in Residential since 1989 - Boundary, Easements, Disputes, no project too small - extensive historical records...

Meridian Surveying Engineering Inc. is a full service hydrographic / bathymetric surveying firm...


3D laser scanning is a new way of performing surveys that allows for the creation of accurate...

We have done extensive work on Schools, Parks, Bridges, Tunnels, Commercial, Industrial, Machine & Crane Alignment...

MSE, INC provides on-going Expert Witness, Litigation Support and Mediation Services...

“We will not hesitate to highly recommend your company to any of our clients...

Experienced, Responsive, Professional Land Surveyors Serving California and the San Francisco Bay Area. We are a CA State Certified Small Business Enterprise (SBE) and a City of San Francisco Certified Local Business Enterprise (LBE). Licensed Surveying Engineers. Meridian Survey offers, Commercial Surveys, (Alta, Lending, Finance and Refi Surveying), Drone Surveys, FEMA Elevation Certificates, Hydrographic Surveys and HD 3D Scanning Surveys. Our principal Mr. Gray also often serves as an Expert Witness Surveyor in the San Francisco Bay Area and Marin County. A few of our other specialties include: Settlement Monitoring Surveys (for buildings), SFP Approved Suryeys (SFO Airport) and we are also an SF LBE/SBE Surveying firm.
  • Offices Near You
  • Ready to Mobilize Crew
  • Real Estate Surveyor
  • Land Surveyor
  • Civil Engineer
  • Civil Engineering Company

Surveying Services

  • FEMA Elevation Certificate

    Land Surveyor
  • HD 3D Laser Scanning

    Land Surveyor
  • ALTA/NSPS Land Title

    Land Surveyor
  • Settlement Monitoring

    Land Surveyor
  • Expert Witness/Title Disputes

    Land Surveyor
  • Drone/Metric Quality Aerial Mapping

    Land Surveyor
  • Hydrographic/Bathymetric

    Land Surveyor
  • SFO/SFIA Survey Support

    Land Surveyor

    Land Surveyor
  • ADA Surveying

    Land Surveyor

    Surveying Since 1989

    Experienced, Responsive, Professional Land Surveyors Serving California and the San Francisco Bay Area since 1982

    Meridian Surveying Engineering, Inc., provides professional surveying, planning and engineering support services to Municipalities, Contractors, Developers, A/E firms, Utilities and homeowners. Since 1982, Meridian and RGA have provided services in strategically located offices in the Cow Hollow area of San Francisco, Central San Rafael & Sacramento Delta / Antioch areas to better serve the San Francisco Bay Area. Meridian has a large array of state of the art equipment and can recommend and provide clients with the ideal tool for any survey project, land air or sea. Meridians services are scalable and we are capable of handling both large and small scale jobs. Our turnaround time for job completion is among the best in the industry. Our staff has extensive experience and a diverse educational background in Surveying Engineering, Industrial Engineering, Geology, Geography, Mathematics and GIS with related specialties. Whether you need to locate a fence in your backyard or need a hydrographic survey or an array of services for a large construction project, Meridian's services will prove to be both timely and effective.

    Commercial Surveying

    We have done extensive work on Schools, Parks, Bridges, Tunnels, Commercial High Rise, Roads, and large scale Utility infrastructure projects. Commercial Surveyors for San Francisco bay area and California

    • ALTA Surveys
    • Subdivisions
    • GIS Team Member
    • Construction Staking
    • Settlement Monitoring
    • Subdivisions
    • ADA Surveys
    • Hazmat Certified
    • Monitoring
    • Precision Alignment
    • Machine Control
    • Feasibility Studies
    • GPS
    • Trimble GPS
    • Spatial Imaging using 3D Scanning for Building Information Modeling (BIM)

    Residential Surveying

    We have done extensive work on Schools, Parks, Bridges, Tunnels, Commercial High Rise, Roads, and large scale Utility infrastructure projects. Commercial Surveyors for San Francisco bay area and California

    • FEMA Elevation Certificates/Flood Certificates
    • Site Plan Surveys
    • Topographic Surveys/Site Surveys
    • Easements
    • Lot Line Adjustments
    • Boundary (Property Line) Surveys
    • Legal Descriptions
    • Lot Line Adjustments
    • Story Pole Certification
    • View Corridors
    • Redtag
    • Parcel Maps

    San Rafael

    777 Grand Avenue, Suite 202
    San Rafael, CA 94901

    San Francisco

    2958 Van Ness
    San Francisco, CA 94109


    1101 Marina Village Pkwy Suite 201 Alameda, CA 94501

    Santa Rosa

    3558 Round Barn Blvd Suite 200 Santa Rosa, CA 95403

    Meridian Survey - Licensed Land Surveying Engineers