Hydroelectric Water Portal
Ontario Power Generation (OPG) operates 66 hydroelectric stations and 239 dams on 24 river systems.
This site provides information on water levels and flows at OPG hydroelectric facilities. Data is continuously collected using gauges that help safely manage OPG’s stations and dams in watersheds across Ontario.
About our water data
OPG specialists track water levels and flows with water level gauges at stations and dams across our hydroelectric operations. This information is available to the public and can be accessed throughout this site.
Please access our most recent snow survey information for snow depth and water content. We also maintain a water management web page where you can access additional water-related resources.
Electrifying life in one generation
OPG is Ontario's leader in generating clean, affordable power by operating a diverse mix of generating assets.
