Flows Lake Ontario Water Level Gauging Stations For current water levels, select a specific gauging station. This map displays only those stations that deliver data online.
Data are preliminary.
This map was created for the regional network by Susan Holland-Hibbert of the Geomatics Unit , Atmospheric Environment Branch, Environment Canada. Back to Great Lakes Water Level Gauging Stations Map . Period of record is 1918-1996. Provides preliminary water levels for each NOS station every six minutes. Data are provisional.