Contact(s)
We monitor stream flow, meteorological conditions, water quality and operational conditions at our dams. The information is collected and transmitted from each station to our Operations Centre in Cambridge, Ontario. Once an hour the data are summarized and posted to this website.
Data posted to this website are provisional data that have not been reviewed or edited and are subject to change. These data are not citable until reviewed and approved by the GRCA or our partner agencies.
River levels and flows can change rapidly in response to water entering the river as a result of rainfall or snowmelt, or changes in discharge from the major reservoirs operated by the GRCA.
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.