Hydrological Sensors

Hydrological sensors are used to monitor water levels, quality and conditions in a broad range of situations, including surface water, ground water, rainwater, rivers, oceans and reservoirs.

They are used for many purposes:

Monitoring of water infrastructure (dams, water treatment plants, pipelines, etc.)
Environmental monitoring of rivers, aquifers, reservoirs and watersheds
During underground construction while lowevering the water table, or reharging the water table
At mine sites, around critical infrastructure (open pits, TSFs, caverns, etc)
Flood warning and stormwater network performance monitoring

Monitoring water levels, quality and conditions

Effective water resource management and flood prevention rely on accurate monitoring of the water cycle. Reliable data is essential for understanding how water levels, flows, and quality change over time.

The safe operation of hydraulic infrastructure—particularly dams—depends on detailed, continuous knowledge of river and reservoir conditions.

In subsurface construction, works are often carried out below the water table. Designing and constructing these engineered structures requires accurate information about groundwater levels and behaviour. During construction, especially when lowering the water table, continuous monitoring of groundwater levels and quality is critical. This monitoring is typically performed alongside measurements of ground movement caused by the works.

Hydrological sensors also play a key role on contaminated sites where soil and groundwater remediation is required.

Hydrological sensor types

Water level – using pressure transducers, radar, ultrasonic, or float systems to measure how high water is.
Flow rate / discharge – using velocity sensors, acoustic doppler sensors , or level–flow rating curves.
Water pressure – often correlated to water depth.
Groundwater level – via borehole loggers or piezometers.
Rainfall – tipping-bucket or weighing-type rain gauges.
Soil moisture – measuring volumetric water content using capacitance, TDR, or FDR probes.

Water quality parameters including:

Temperature
pH
Electrical conductivity
Turbidity
Dissolved oxygen
Nutrients (e.g., nitrate, phosphate)
Snow depth / snow water equivalent – in alpine hydrology.
Evaporation / evapotranspiration – via weather stations and specialised sensors.

Monitoring with hydrological sensors allows you to:

Monitor water resources
Prepare for extreme rises in water levels and flooding
Maintain correct operation of hydraulic infrastructures
Monitor subsurface construction works and/or soil remediation projects

The added benefits of using our hydrological monitoring

Cutting-edge expertise

gained from more than 20 years of experience and in-house development

The availability of dedicated local teams

as a result of our extensive netwok

A turnkey service

from installation to provision of processed data, alarms and reports in our monitoring website

Hydrological and geotechnical know-how

allowing intelligent interpretation of measurements, and to identify anomalies

Data quality control

driven by proactive maintenance to ensure that measurements are accurate and actionable

Access to our vast sensor network

we partner with the world's leading sensor suppliers, to bring you the best quality sensors at the best price