Project Overview

Located within the quickly developing area of northern Columbus and southern Delaware County, the Olentangy River is a tributary of the Scioto River in Ohio.

Despite rapid housing and business development around the Columbus area, the Olentangy River has seen an improvement in water quality, as it was upgraded to an exceptional warm water habitat by the Ohio Environmental Protection Agency.

Recently, Ohio State University’s Wilma H. Schiermeier Olentangy River Wetland Research Park contacted NexSens Technology to install a water quality monitoring station with radio telemetry in the Olentangy River.

System Description

Using a NexSens 4100-iSIC spread spectrum radio data logger and a YSI 6600 V2-4 sonde, OSU researchers are able to monitor water quality data from their research facility.

Measurement parameters include temperature, conductivity, dissolved oxygen, pH, ORP, turbidity, chlorophyll, and water level. This station is a complement to the NexSens real-time wetland monitoring system already in place, which covers the 25-acre marshy wetland.

An ISCO 6712 Portable Sampler is also mounted along the bridge. Connected to the sampler is a 4100-iSIC data logger, which can automatically trigger it based on high/low parameter readings. For advanced sampling, the iSIC data logger can also automatically run any sampling program stored within the automated sampler.

NexSens engineers mounted a secure deployment pipe to a structure along the side of a bike path bridge. The bike path is a common route to campus for Ohio State students, so it was essential that the water quality station did not disrupt student traffic. Additionally, the deployment pipe features a locking well cap to prevent the sonde from being vandalized or stolen.

Having the deployment pipe at the top of the bridge means wetland researchers are able to maintain the sensors without entering the river. This is especially beneficial during periods of high water and the frigid winter months. The deployment pipe is equipped with a tethered breakaway system to allow for harsh river conditions; if too much debris builds up against the pipe, it will break away, but the deployment apparatus and water quality sonde will be contained by a stainless steel cable.

Perhaps the most beneficial aspect of the NexSens water quality monitoring network, though, is the ability to monitor data in real time from the newly constructed campus wetland research building.

“It is the ecological analogy of seeing the score of a game as it is happening as opposed to reading about it the next day,” said Dr. William Mitsch, wetlands scientist and director of the ORWRP.

Thousands of people visit the ORWRP every year to observe wildlife, conduct research, and enjoy the beautiful landscape. The ORWRP is not just a research park; it is also open to the general public. It is located immediately north of OSU’s campus and is open daily from 9 a.m. to sundown.


NexSens iSIC Data Logger

Specifically designed for remote environmental monitoring applications, the iSIC data logger offers superior data acquisition performance in extreme conditions.

YSI 6600 V2-2 Multi-Parameter Water Quality Sonde

The YSI 6600 V2-2 sonde offers the most comprehensive water quality monitoring package available and is designed for use with the 6562 Rapid Pulse polarographic DO probe.

NexSens iChart 6 Software

iChart software simplifies and automates many of the tasks associated with acquiring, processing, analyzing and publishing environmental data.

NexSens WQData LIVE Web Datacenter

WQData LIVE is a secure web datacenter providing an online interface for viewing environmental data. It offers 24/7 instant access to project data using any web browser.