Water conductivity measures the water's ability to conduct an electric current. It is related to the total dissolved salts (ions) in the water.
Groundwater can carry salts into the river water, thus increasing the conductivity of the river water. Road salt is another source of salt that can enter the river system and increases the conductivity of river water.
Large fluctuations in conductivity can occur after a rainfall or a snow melt. Water entering the river after can increase dilution which decreases the salt content and conductivity of the river water.
Caution: Users of the GRCA's real-time data are cautioned to consider the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business.
The Grand River Conservation Authority assumes no responsibility for the correctness of the information contained in this website nor liability to any user of such information, regardless of the purpose.
Warning! River levels and flows can change rapidly.