Water Temperature

Water temperature can have an adverse effect on water quality and the water's ability to hold dissolved oxygen. As water warms, it has a reduced ability to retain oxygen.

Provisional Data

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.