SonTek HydroSurveyor

SonTek HydroSurveyor M9 at Dawes Glacier in Alaska

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The HydroSurveyor is designed to collect bathymetric, water column velocity profile, and acoustic bottom tracking data as part of a hydrographic survey.  The two key components of the system are the HydroSurveyor Acoustic Doppler Profiler (ADP®) platform and the powerful yet user-friendly data collection software. With the HydroSurveyor platform, SonTek can offer an exclusive 5-beam depth sounding device with built-in navigation, full water column velocity (currents) profiling, full compensation for speed of sound (with the CastAway-CTD), and an integrated positioning solution.

  • Overview

    Flexible and Fast

    Water sound speed corrections are interpolated in both space and time with the fully integrated CastAway-CTD.


    Full water column velocity mapping, 5-beam depth sounding, and acoustic bottom tracking (for speed over the ground when GPS is lost) provide comprehensive data for a complete solution with a single package.

    Software Centric

    With built-in automatic data gridding and interpolation, even intricate surveys will not require specialized, complex software, saving you time and money.

    •    Sound speed integration and interpolation (with CastAway-CTD)
    •    Speed over ground (Acoustic Bottom Tracking)
    •    5-beam depth soundings (50° swath)
    •    Water column velocity (currents) mapping
    •    Automatic data gridding and interpolation
    •    360° compass and two-axis tilt sensor
    •    Interface for customer-supplied GPS and/or heading sensor

    Additional Options:

    •    CastAway-CTD
    •    Upgrade for existing RiverSurveyor M9 systems
    •    SonTek RTK GPS or DGPS
    •    Delrin/aluminum boat mount
    •    Bluetooth/spread spectrum telemetry

  • Specifications
    Beam Specifications       
    Vertical Beam         Slanted Beams       
    Range 0.2m to 80m     0.2m to 40m
    Beam Angles

    Depth — Accuracy 0.02m (sound speed corrected)
    Depth — Resolution


    Swath Width 0.0001 m/s
    Profiling Range — Distance

    0.06m to 40m

    Profiling Range — Velocity ± 10 m/s

    Velocity — Accuracy

    Up to ± 0.25%, ± 0.2 cm/s

    Velocity — Resolution

    0.001 m/s

    Number of Cells Up to 128
    Cell Size

    0.02m to 4m

    Acoustic Bottom Tracking — Range ± 10 m/s
    Temperature Sensor — Accuracy ±0.1°C
    Acoustic Bottom Tracking — Altitude

    0.2 – 40m

    SonTek RTK GPS — Horizontal Precision (Repeatability) <0.03m
    SonTek DGPS — SBAS GPS Horizontal Accuracy <1.0m
    Transducer Configuration 8-beam Janus (4 x 1MHz; 4 x 3MHz) and 1 Vertical Beam (0.5 MHz)
    Temperature Sensor — Resolution ± 0.01°C
    Temperature Sensor — Accuracy ± 0.1°C
    Compass — Type Solid State type, with Built-in Inclinometer
    Compass — Range

    Full 360°

    Compass — Heading Accuracy ± 2°
    Compass — Tilt Accuracy ± 1°
    Power 12-18 VDC
    Operating Temperature -5°C to 45°C
    Storage Temperature -20°C to 70°C
  • Accessories

    SonTek M9 Battery Holder

    Battery Holder

    SonTek M9 Communications Cable

    Communications Cable

    SonTek M9 Antenna

    2.4-GHz Antenna (2 dBi)

    SonTek M9 GPS Antenna

    DGPS / RTK GPS Antenna

    SonTek M9 GPS Antenna Cable

    Extension Cable

    SonTek M9 Tripod Spacer

    Tripod Spacer

    SonTek M9 Radio Antenna Mounting Bracket

    Antenna Mounting Bracket

    SonTek M9 Battery Slot Endcap

    Battery Slot Endcap

    SonTek M9 Mounting Bracket

    Mounting Bracket

    SonTek M9 Power Supply

    Power Supply

    SonTek M9 Battery Charger

    Battery Charger for AA NiMH batteries

    SonTek M9 Rechargeable Batteries

    Rechargeable Batteries

  • Software

    HydroSurveyor Software - V 1.50

    The user-friendly HydroSurveyor software package offers a central recording and processing platform that allows users to develop bathymetric maps with modest accuracy, using properly gridded data points. Features include CastAway-CTD integration, data gridding and interpolation, automatic track switching and a central recording platform.

    Get the Software and Firmware

  • Video

    SonTek HydroSurveyor M9 at Dawes Glacier in Alaska

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