A typical stream gage system monitors conditions including water quality, water level and flow conditions. With proper installation and maintenance, NexSens stream and river monitoring systems can deliver many years of useful data and warning when conditions change.

For water level measurement, NexSens stream and river monitoring systems typically integrate a pressure transducer or non-contact level sensor. Various water quality sensors are included with a multiparameter sonde. The NexSens X2 data logger supports all of the most common instruments such as the YSI EXO, Eureka Manta+ and In-situ Aqua TROLL. These instruments can measure any combination of temperature, conductivity, pH, dissolved oxygen, turbidity, nutrients, algae, chlorophyll and more. If the river’s cross section is known, water level data may additionally be used to calculate flow rates.

Water quality instruments can be securely installed in a perforated deployment pipe mounted on the stream or riverbank. Flow through the pipe ensures accurate measurement, and instruments are easily removed from the pipe for maintenance and calibration.

An X2 data logger mounted on a nearby structure, tree or mast can transmit real-time data wirelessly to the WQData LIVE web datacenter via radio, cellular or satellite communications. The free Basic tier of this service allows users to securely access and analyze data, remotely control the logger and set simple alerts based on high or low data values. Subscription tiers of WQData LIVE are also available for advanced reporting, alarming, and data sharing including API and public portal options.

The multiple sensor ports of the X2 logger accommodate applications requiring sensors at multiple locations or expansion with other types of instruments. Some of the most common for stream gauge systems include tipping bucket rain gauges, weather stations, and side-looking current profilers.