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OKM GeoSeeker Mini - Underground Water and Cavities Locator

Original price $7,990.00 - Original price $7,990.00
Original price
$7,990.00 - $7,990.00
Current price $7,990.00
in stock
The OKM GeoSeeker is able to detect groundwater resources such as freshwater, drinking water, gravel water, and groundwater level.Read more

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OKM GeoSeeker Mini – Water and Cavity Detector

Like its big brother OKM GeoSeeker, the OKM GeoSeeker Mini uses a geoelectrical measurement procedure based on Schlumberger. The water detector, which can also be used to detect underground cavities, determines the resistivity of the soil. Based on this resistance to soil, the detector is able to detect groundwater resources such as freshwater, drinking water, gravel water, and groundwater level.

Due to the fact that groundwater has very good conductivity, you can conclude that a very bad conductivity is an indication of hidden cavities such as caves, tunnels. Therefore, the GeoSeeker Mini geophysical OKM detector can be implemented as a water detector and cavity detector at the same time.

Operation of the OKM GeoSeeker Mini Water and Cavity Detector

The OKM GeoSeeker Mini water detector is operated via the touch screen. You will select the measurement depth as well as the number of scan points and simply follow the graphical instructions. Due to the use of easy-to-understand images and icons, OKM GeoSeeker Mini is multilingual using pure image language.

During measurement, electrodes must be replaced several times to measure ground resistance at certain locations. All instructions can be read on the color screen, where the results are presented after each individual scan. At the end of a measurement, the final result is displayed as a graphical 2D scan image.

Graphical visualization of water resources and cavities data.

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

Depending on the penetration depth selected, it can detect groundwater deposits and cavities up to a maximum of 100 meters (328 feet). If you need a water detector that measures much deeper, you should see your big brother OKM GeoSeeker, who can measure up to 250 meters (820 feet).

Geoelectric applications with OKM GeoSeeker Mini

The OKM GeoSeeker Mini geoelectric detector can be used to detect groundwater resources and hidden cavities. Both structures can be located due to their specific electrical resistivity characteristics.

Water Detection

Groundwater resources have good electrical conductivity, and measuring their resistivity will result in low resistance values. The water detection capability is very useful for dowsers, water seekers, well constructors, drilling companies, agriculture, fruit farming, mining, construction contractors.

Detectable subsurface water reservoirs could be groundwater level, freshwater, drinking water, groundwater course, water veins, groundwater streams, headwaters, cavity detection.

Hidden cavities and hollow spaces have rather poor electrical conductivity, and measuring their resistivity will result in high resistance values.

Cavity detection capability is useful for archaeologists, historians, treasure hunters, geotechnical engineering, military services, construction contractors.

Detectable subsurface cavities could be caves, tunnels, galleries and wells, chambers, graves, tombs, bunkers, vaults, cellars, rooms.

Contact our Sales and Support team for additional questions about OKM Geoseeker Mini! We are more than happy to help you find the best detector for your special field of application.

Data visualization of water resources and cavity

After finishing a geoelectrical measurement, the final result is calculated to generate a representative 2D scan image of the underground resistivity. With the pictograms in the lower display area, users can read directly the diagram: The colors in the scheme indicate water deposits (blue with water drops) and/or detected cavities (red with tunnel symbol).

OKM GeoSeeker Mini
GeoSeeker Mini display with selected measuring depth of 20 m: Measurement data show water occurrence (blue) and detected cavity (red) up to 20 m depth.
OKM GeoSeeker Mini
GeoSeeker Mini display with selected measuring depth of 100 m: Measurement data show water occurrence (blue) and detected cavity (red) up to 100 m depth.

Depending on the selection of the size and depth of the measurement, the display contains several columns and is provided with corresponding depth information.

Using the left button (water drops) and the middle button (tunnel entrance), the user can switch to simplified representations of the measurement results.

OKM GeoSeeker Mini
GeoSeeker Mini with simplified indication: The waterfinder has detected a low resistance value in the center of the measuring field, which indicates high conductivity, i.e. water occurrence.
OKM GeoSeeker Mini
GeoSeeker Mini with simplified indication: The detector found a high resistance value in the center of the measuring field, indicating a cavity.
OKM GeoSeeker Mini
GeoSeeker Mini with simplified indication: The buttons can be used to display further measurement results - cavity and 2D diagram.
OKM GeoSeeker Mini
Selection of the screen view: Inactive buttons indicate that no water and/or cavity has been detected. In this case, the 2D diagram is available as an overview of the measurement data.

Thanks to the realization of step-by-step instructions and results in simple images and pictograms, the GeoSeeker Mini is language-independent. That means, the water detector can be used by inexperienced users all over the world – no matter what language they speak.


Import Duties, Taxes, and charges are not included in the item price or shipping charges. These charges are the buyer responsability.

Please check with your country’s custom office to determine what these additional costs will be prior to buying.

** Detector Power is not responsible and does not accept returns for the incorrect handling of the equipment sold and can not guarantee the customer the discovery of valuable treasures or metals if in the place of search there is really nothing. Detector Power guarantees that the devices detect efficiently as they are constantly evaluated by detectorists and manufacturers to provide the best results. We suggest our clients before making any purchase that analyzes the equipment well since they are high-end and very modern equipment that can not be returned.

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Detector Online Training

With your new detector, you will receive a Quick Start Guide, a valuable resource designed to guide you through the essential steps of operating your new device seamlessly. This user-friendly guide is tailored to ensure that even beginners can quickly grasp the fundamental functions and features.

For those seeking a more profound understanding, a comprehensive manual accompanies your purchase. This detailed manual delves into the intricacies of your detector, providing a wealth of information for users eager to explore advanced settings and capabilities.

However, the pinnacle of expertise in harnessing your detector's full potential lies in professional training. While guides and manuals offer a solid foundation, professional training takes your knowledge to the next level. Through hands-on instruction and insights from seasoned experts, you'll gain a deeper understanding of your detector's nuances and unlock its optimal performance.

During the individual training, our detector Expert addresses your wishes and questions, provides you tips and tricks and helps you to improve your chances of success with your detector.

  • Theoretical introduction
  • Overview of the functionality and operating modes of your detector
  • Using the detector on the test field
  • Tips and tricks for advanced users
  • Improving your measurement procedure
  • Evaluation of the scans on the detector display
  • Answers to your questions

In addition to a general introduction to the functionality and operating modes of your detector, the detector Expert explains how to use the detector efficiently in the field. In doing so, he can correct small errors during the measurement and advise you on special features of your search projects.

You will learn how to check your measurements and further improve your scanning technique independently. You can also draw initial conclusions about potential target objects in the underground.

  • Service & Support: for entry-level, experienced and professional detectorists
  • Schedule: After you add the paid training, we will contact you to schedule your training with our expert.

Trainings are charged per hour! Additional costs may apply for training sessions. For special requests please contact us at