Geolinks in​
water resources and monitoring

Geolinks leads in addressing industry challenges of groundwater management through innovative use of passive seismic technology. Our user-friendly approach, utilizing a network of seismic sensors, provides precise spatial and temporal mapping of groundwater table fluctuations. This method ensures environmental integrity while offering unparalleled tracking of groundwater shifts, enhancing insights into phenomena such as groundwater recharge.

Main Issue
that we solve​

Groundwater resource management heavily relies on sparse data from piezometers. To effectively characterize aquifer water recharge, it is essential to continuously track spatial and temporal variations in subsurface water masses. Current techniques, including piezometers, Time Domain Reflectometry (TDR), and neutron logging, are accurate but complex to implement and maintain. These methods provide limited, location-specific information with no continuity between measurement points. In contrast, our technique offers the exclusive advantage of continuous, high-resolution imaging of water mass variations in both space and time.

What is Geolinks
FlowTerra™ Solution?

The natural and human-induced vibrations of the subsurface are captured at the nodes of the seismic sensor array. As the saturation of the environment changes, the propagation speed of these vibrations between different nodes varies. These changes in speed are then mapped to visualize fluctuations in the groundwater tables.

Why choose
FlowTerra™ for water ?​


Introduce comprehensive volumetric data as a superior alternative to single-point measurements. Enhance insights into water resources to better anticipate scarcity and pollution incidents.


  • Involve cost effective equipment
  • Non-invasive solution


Detailed explanations of the technique are given in numerous scientific publications (refer to our list of references below).It has been successfully applied in diverse cases, demonstrating the proven sensitivity of seismic velocities to water saturation—a precise parameter for tracking changes. Calibration with piezometer measurements enables the correlation of speed variation with water level changes. Figure 1: A strategically positioned network of 100 sensors in a catchment area analyzed the behavior of an infiltration basin during the installation of a hydraulic barrier (after Gaubert et al., Water Resource Research, 2022).


This monitoring method complements information obtained through piezometers, TDR and neutron logging, reducing the need for these methods.
Hydraulic dome (vertical scale in meters) created by an infiltration basin. The red crosses represent the positions of the surface seismic sensors.
Ref : Gaubert-Bastide, T. , Garambois, S., Bordes, C., Voisin, C., Oxarango, L., Brito, D., Roux, P. (2022). High-Resolution Monitoring of Controlled Water Table Variations From Dense Seismic-Noise Acquisitions. Water Resource Research, 58,8, doi: 10.1029/2021WR030680

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