Groundwater Level & Flow
A basic measurement in groundwater studies is that of water levels in wells. Water level measurements help determine flow directions, identify changes in gradients and seasonal fluctuations. They are also used during aquifer testing, and measurements related to groundwater sampling.
The measurement of the groundwater level in a well is often conducted in conjunction with groundwater sampling to determine the “free” water surface. Groundwater level and well depth measurements are needed to determine the volume of water to be purged or in monitoring drawdown in the well casing for low flow sampling.
| Geotech Water Level Meters |  |
Geotech designs and builds electronic water level meters – This type of instrument consists of a spool of dual conductor wire attached to a coated steel measurement tape, a sensor probe attached at the end, and indicator electronics. When the probe comes in contact with groundwater the circuit is closed and a light and audible buzzer attached to the spool will signal contact. The meter uses a 9 volt battery as the power source. Accurate measurements can be made to 3mm (1/100 of a foot).
| Water Level Logging |  |
Designed for extended monitoring durations, these instruments offer the capability to collect water levels at user-defined intervals, eliminating the need for manual measurements. Their compact size facilitates measurement in wells or piezometers characterized by small diameters, irregularities, angles, or the presence of pumps and equipment. Equipped with a data logger, these instruments can operate unattended for prolonged periods, with the flexibility to download data to a portable field computer when required.
| Geotech Interface Probes & Meters |  |
Oil-water interface probes monitor wells for the presence of separate phase product prior to purging.
An interface probe is an electronic probe designed to detect the electrical conductivities of different fluids to determine the depths to LNAPL/water interfaces. This data is used for site characterization studies to determine remediation strategies and monitor current remediation efforts.
| Water Flow Measurement Meters |  |
Flow measurement is the quantification of bulk fluid movement. Flow can be measured in a variety of ways.
| Sonic Water Level Measurement |
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Eno Scientific Well Sounder 2010 Pro
The Eno Scientific Well Sounder 2010 Pro represents an advanced portable sonic water level meter, leveraging sound waves for the precise measurement of static water levels in wells, piezometers, and boreholes. It includes an internal data logger with configurable manual or automatic logging at specified time intervals. Notably, the Well Sounder Pro is equipped to intelligently handle known well defects by offering the option to disregard interferences. The operational process involves placing the sensor into the well vent opening, yielding rapid and accurate display of static water depths. Additional technical features include automatic temperature compensation, the computation of drawdown and recovery rates, immediate data capture, a capacious 2 GB non-volatile memory with time and date stamps, a power-saving mode, and the availability of remote communications capabilities.
Eno Scientific Well Sounder 2010 Pro Specifications
Eno Scientific Well Sounder 2010 Pro User Manual
| SonTek Doppler Instruments |
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SonTek, advancing environmental science in over 100 countries, manufactures affordable, reliable acoustic Doppler instrumentation for water velocity measurement in oceans, rivers, lakes, canals, harbors, estuaries, and laboratories. SonTek instruments use sound waves to measure how fast water is moving, where it is moving, and even if it is not moving at all. SonTek customers are scientists, engineers, hydrologists, research associates, water resource planners and anyone that needs to collect velocity (speed) data in every kind of body of water.
Geotech is a SonTek representative in Colorado, New Mexico, Utah, and Wyoming.