Made in Germany   Made in Germany   Detection Technologies since 1998

Water detector and cavity detector OKM GeoSeeker Mini

Like its big brother OKM GeoSeeker, the OKM GeoSeeker Mini utilizes a geoelectrical measurement procedure based on Schlumberger. The water detector - that can also be used to detect underground cavities - determines the soil resistivity. Based on that ground resistance the detector is able to detect underground water resources like fresh water, drinking water, water-bearing gravel and groundwater level.

Water and cavity detector GeoSeeker Mini
Water and cavity detector GeoSeeker Mini
The geoelectrical detector OKM GeoSeeker Mini consists mainly of a control unit with color touchscreen, Power Pack and two cable drums.

Due to the fact that underground water has a very good conductivity, you can conclude that very bad conductivity is a hint for hidden cavities like caves, tunnels, chambers and underground rooms. Thus the geophysical detector OKM GeoSeeker Mini can be deployed as water finder and cavity detector at the same time.

Operating the water and cavity detector OKM GeoSeeker Mini

The water detector OKM GeoSeeker Mini is operated via touchscreen. You will select the measurement depth as well as the amount of scanning points and simply follow the graphical instructions. Due to the usage of easy to understand images and icons the OKM GeoSeeker Mini is multilingual by using pure picture language.

Placing the electrodes
Placing the electrodes
While measuring the soil's resistivity, the electrodes have to be replaced several times.
Easy touchscreen operation
Easy touchscreen operation
The geoelectrical water detector is operated via color touchscreen.

During the measurement the electrodes have to be replaced several times to measure the ground resistance at certain places. All instructions can be read from the color display, where the results are presented after each single scan. At the very end of a measurement the final result is shown as a graphical 2d scan image.

Graphical data visualization of water resources and cavity

After finishing a geoelectrical measurement the final result is calculated according special formulas to generate a representative 2d scan image of the underground resistivity.

2d scan of a water deposit
2d scan of a water deposit
Water is represented in blueish colors. The more blue the more conductivity (less resistivity) of the underground materials.
2d scan of a cavity
2d scan of a cavity
Cavity is represented in reddish colors. The more red the more resistivity (less conductivity) of the underground materials.

Depending on the selected depth penetration, you can detect underground water deposits and cavities up to maximum 100 meters (328 feet). If you need a water detector that measures way deeper you should have a look at its bigger brother OKM GeoSeeker, that can measure up to 250 meters (820 feet).

For a more detailed comparison of both detectors you can check our GeoSeeker Comparison Matrix that compares all features of both geoelectrical water and cavity detectors.

Geoelectrical applications with OKM GeoSeeker Mini

The geoelectrical detector OKM GeoSeeker Mini can be used to detect underground water resources as well as hidden cavities. Both structures can be located due to its specific characteristics of electrical resistivity.

Geoelectrical measurement
Two electrodes are injecting electrical power into the underground, whereas two additional electrodes are measuring the potential difference (fall of voltage) to calculate the final resistivity value.

Water detection

Underground water resources have a good electrical conductivity and measuring its resistivity will result in low resistance values. The capability of water detection is very useful for

  • dowsers, water finders
  • well builders, drilling companies
  • agriculture, fruit growing
  • mining, building contractors

Detectable subsurface water deposits could be

  • ground water level
  • fresh water, drinking water
  • underground watercourse, water veins
  • underground water streams, headwaters

Cavity detection

Hidden cavities and hollow spaces have a rather poor electrical conductivity and measuring its resistivity will result in high resistance values. The capability of cavity detection is useful for

  • archaeologists, historians
  • treasure hunters
  • geotechnical engineering
  • military services
  • building contractors

Detectable subsurface cavities could be

  • caves, tunnels
  • galleries and manholes
  • chambers, sepulchers, tombs
  • bunkers, vaults, cellars, rooms

Please contact our sales and support team for additional questions about OKM GeoSeeker Mini! We are more than happy to assist you in finding the best detector for your special field of application.


  GeoSeeker Mini - User's Manual (English)

In the following table you can see the complete delivery contents and all optional accessories. The used symbols have the following signification:

x times includedx = x times included
not included = not included
optional available, only for additional charge = optional available, only for additional charge
DescriptionGeoSeeker Mini
Control unit with touch screenYes1
ElectrodeYes4
Extension Cable ( 2 m )Yes2
Power Cable Drum ( Ø 290 mm )Yes2
Power Pack incl. charger and travel adapterYes1
User's manualYes1
Voltage Cable ( 10 m )Yes2

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