Groundwater Monitoring

Groundwater contamination is a serious issue that can affect irrigation, drinking water, and municipal water supplies. Well monitoring efforts can detect contaminants in groundwater in real-time; giving water managers and response personnel time to take action.

NexSens groundwater monitoring systems offer an in-situ method for tracking water quality and level in real-time.

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NexSens MAST Aluminum Mounting Pole

The MAST is designed for quick deployment of remote data logging and telemetry systems. The X2 data logger and solar panel/battery pack can all be mounted to the MAST prior to deployment. By pre-assembling the components, the system can be quickly deployed in the field.

NexSens SP-Series Solar Power Packs

The SP-Series Solar Power Packs feature a solar panel, regulator, and battery housed in a weather tight enclosure. Solar Power Packs are used to provide continuous power for X2 and V2 systems. All components are weather tight and designed to withstand harsh conditions.

NexSens X2 Environmental Data Loggers

The X2 is an all-in-one environmental data logger with a large plug-and-play sensor library and ultra-low power consumption that can be controlled from any internet browser using a smartphone, tablet, or PC. It automatically recognizes sensors and sends data to the web via Wi-Fi, cellular, radio, or satellite telemetry.

NexSens Sonde Deployment Pipe

PVC or metal deployment pipes are installed to protect the dissolved oxygen sensors in the water. The pipe is perforated near the sensor to allow adequate water flow for a representative measurement. In addition to shielding the sensors from debris, the pipe helps secure the equipment in a fixed position for quality data and offers easy removal for calibration.

Seametrics PT12 Submersible Pressure Sensors

Designed to resist the elements, the Seametrics PT12 delivers accurate pressure and temperature readings in rugged environments.

Case Studies

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Karst System Groundwater Monitoring

Because of its location in a karst region that is marked by the presence of sinkholes, springs, caves and underground streams, the city of Bowling Green, Kentucky, faces challenges when it comes to managing its stormwater resources. In response to those challenges and to help make managing the resources easier, scientists at Western Kentucky University, in partnership with and financial support from the City of Bowling Green, outfitted a section of the Lost River Rise with water quality and groundwater monitoring equipment in 2014. Since the Lost River Rise is the primary output for one of the large karst groundwater systems running beneath Bowling Green, it is an important location to study both for those who rely on its water and scientists interested in how it responds to heavy storm events.

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Stream and Groundwater Interactions – UNC Wilmington

Temperature data can be used for the qualitative and quantitative assessment of groundwater-surface water interactions. Surface water bodies, such as streams, often undergo diel variations in temperature, whereas deeper groundwater may maintain a relatively constant temperature. In the shallow hyporheic zone, where ground and surface waters mix, temperature profiles can provide insight regarding the direction of groundwater flow. For example, in a down-welling stream reach (one in which water flows from the stream into the hyporheic zone), the temperature behavior in the shallow subsurface may show the diel temperature variation caused by the downward moving surface water.

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Lake Huron Sinkhole Research

Along the seafloor of Lake Huron, there are several karst sinkhole formations through which groundwater enters the lake bottom and carries with it remnants of an ancient sea. A team from the National Oceanic and Atmospheric Administration’s Thunder Bay National Marine Sanctuary and Institute for Exploration first discovered evidence of the sinkholes by accident in 2001 while studying shipwrecks located offshore from Alpena, Mich. Upon measuring unusual levels of conductivity, the team called in Bopi Biddanda from the Annis Water Resources Institute at Grand Valley State University and Steve Ruberg from NOAA’s Great Lakes Environmental Research Laboratory, who both discovered the sinkholes.

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