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GeoSeeker: Water Detector down to 250m (820 ft)

by OKM
Original price $11,490.00 - Original price $11,490.00
Original price
$11,490.00 - $11,490.00
Current price $11,490.00
  • Geoelectric water and void detector: Determines the ground resistance down to a depth of 250 m (820 ft) and visualizes the measured values in 3D
  • Detection depth: With this technology customers found water down to 250 m (820 ft) deep
  • Use cases: Water detection, cavity detection, geotechnical engineering
  • Operating modes: Active/Passive
  • Detectable structures: Water deposits, water-bearing gravel, cavities



  • Geoelectrical Measuring Procedure
  • 3D Visualization
  • Color Display / Touchscreen
  • Internal Memory
  • Rechargeable High-Capacity Battery
  • Multilingual Operation
  • Wireless Technology


Water and Void Detection down to 250 m (820 ft) Depth

Are you looking for underground water resources or hidden cavities up to depths of 250 meters (820 ft)? GeoSeeker is a professional geoelectrical water detector and cavity detector that measures the ground resistivity and visualizes its scan data in incredible 3D graphics. It is a very mobile and easy to operate geoelectrical detector designed and manufactured in Germany.

Water detection in Africa

July 04, 2018
Water detection in Africa

Water detector OKM GeoSeeker was handed over in December 2017 to "Aktion Pro Afrika" - a nonprofit organization.

GeoSeeker utilizes a geoelectrical measurement procedure based on Schlumberger to read the apparent resistivity of the ground. Based on that ground resistivity the detector is capable to locate underground water deposits, water-bearing gravel and groundwater level as well as cavities like caves, tunnels, chambers and the like. Thus, the geophysical detector can be deployed as water finder or cavity detector at the same time.

Water Detection with GeoSeeker

GeoSeeker hardware components are completely controlled by a modern Android Tablet PC. All commands and measurement results are transferred wireless via Wi-Fi. Using the pre-installed software application, you simply select one of three supported scan modes:

Water Detector with mode Active Scan (Accurate)

Active Scan (Accurate)

In the Active Scan mode, GeoSeeker utilizes two electrodes to inject electrical power into the underground soil. Two additional electrodes are measuring the potential difference (fall of voltage) at specific scan points to calculate the final resistivity value.

This mode is used to detect underground water deposits, hidden caves or even impervious layers and barriers within the underground soil. In active scans, you will be able to define a specific depth range in that you are going to conduct your measurement. So you will define a starting and ending depth between 5 meters (16 feet) and 250 meters (820 feet).

Water Detector with mode Active Scan (Quick)

Active Scan (Quick)

This scan mode is a quick version of the Accurate Scan. It is also injecting electrical current into the underground and measuring the potential difference (fall of voltage) to calculate the resistivity of the ground.

Water Detector with mode Passive Scan

Passive Scan

In the Passive Scan mode, the GeoSeeker only utilizes two electrodes to read the natural occurring voltage of the underground (no electrical power is injected into the underground). This mode is used to detect underground flowing water only.

Configure and Conduct Scans via GeoSeeker App

Water Detector GeoSeeker App showing menu profiles
Water Detector GeoSeeker App showing menu modes

The GeoSeeker application for Android provides simple step-by-step instructions to assist you in completing the measurement. You simply follow these pictured instructions until your measurement has been finished.

Water Detector GeoSeeker App showing menu profile single
Single Measurement (of a single point only)
Water Detector GeoSeeker App showing menu profile full
Complete Measurement (of a rectangular field)
Water Detector GeoSeeker App showing menu profile lengthwise
Lengthwise Measurement (of a single line)
Water Detector GeoSeeker App showing menu profile crosswise
Crosswise Measurement (of a single line)

Analyze Scans in the App and in Visualizer 3D Studio

Volumetric 3D visualization of a GeoSeeker scan
New render view Volumetric 3D in OKM Visualizer 3D Studio Pro

After completing the measurement, a 3D representation of the measured values is displayed on the tablet screen. Various color adjustment options allow optimizing the visualization of detected underground water deposits, water-bearing gravel and groundwater level (shown in blue) as well as cavities, caves, tunnels, chambers or impervious layers (shown in reddish colors).

Thanks to the major update of Visualizer 3D Studio in 2023, GeoSeeker measurements can now also be displayed, optimized and analyzed in greater detail in the 3D software. The new render view Volumetric 3D is a major milestone for GeoSeeker users.

Easy-to-transport Water Detector

The GeoSeeker hardware is integrated in a waterproof and shock-resistance Protector case. Thus, your geoelectrical equipment is well-packed and always ready for transportation.


Use Cases

  • Water Detection / Well Building
  • Geotechnical Engineering
  • Cavity Detection
  • Agriculture
  • Archaeology
  • OKM Search Services


  • Includes:
    • 1x Controller incl. charger
    • 8x AA battery 1.5 V (rechargable)
    • 1x Android Tablet
    • 4x Electrode
    • 2x Power Cable Drum (Ø 290 mm)
    • 2x Voltage Cable Drum (Ø 120 mm)
    • 2x Connecting Cable (2 m)
    • 1x USB Flash Drive with OKM Visualizer 3D Studio Professional Edition
    • 1x Power Pack
    • 1x Power Box incl. charger
    • 1x Waterproof and shock-resistant Protector Case
    • 1x Quick Start Guide
    • OPTIONAL Pre-configured Windows Notebook


 Technical Specifications
Feature Specification
Voltage Cable Drums (Ø 120 mm)
Dimensions (H x W x D) 360 x 290 x 200 mm
Weight 6.5 kg
Cable Length 255 m
Markers 15
Power Cable Drums (Ø 290 mm)
Dimensions (H x W x D) 120 x 120 x 45 mm
Weight 0.65 kg
Cable Length 26 m
Markers 25
Controller (Receiving Unit)
Dimensions (H x W x D) 130 x 270 x 110 mm
Weight 0.6 kg / 2.1 kg (with mounted cable reels and batteries)
Sample Rate 4096 Hz (64 times oversampling of a 512 samples mean value)
Operating Time min. 16 hours (charged batteries)
Charging Time 3 h / max. 5 h (empty batteries)
CPU 80 MHz Cortex M3
ADC 16 bit
Communication with Tablet PC WLAN-Accesspoint, 2.4 GHz band, channel 6, WPA2
Communication with Power Box 2.4 GHz band, on-demand, proprietary
Effective Range –1400 to +1400 mV
Measurement Period per Scan Point min. 16 seconds
Power Supply (8 AA batteries) 8 – 14 V DC
Input (for Charger) 12 V DC / 1.5 A
Input Resistance (static) approx. 12 MΩ
Power Box (Sending Unit)
Dimensions (H x W x D) 230 x 550 x 360 mm
Weight 15.8 kg / 18 kg (with mounted Electrodes)
Operating Time 100 h (min. Power) / 40 h (average Power) / 8 h (max. Power)
Charging Time max. 8 hours
Output max. 390 V / 0.5 A / 20 W
Communication with Controller 2.4 GHz band, on-demand, proprietary
Input (for Charger) 24 V DC / 2 A
Internal Power Supply Lead Acid Battery (2 x 12 V, 10 Ah)
Dimensions (H x W x D) 440 x 120 x 35 mm
Weight 0.52 kg
Note The technical data are average values. Minor deviations are possible during operation.

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