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 . Data are preliminary. Provides preliminary water levels for each NOS station every six minutes.
Data are provisional.
Data are preliminary. Period of record is 1918-1996. Data are preliminary. This page was created under the guidance of the binational Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data . This symbol is used throughout the GLIN hydrology section to indicate data or references prepared under the auspices of the Coordinating Committee.