Great Lakes Dashboard
Operational Data
Research Data
Download Data
Operational Channel Flow and Diversion Measurements

The following information (with minimal editing) is pulled from the source data spreadsheets publicly available on the GLERL website (see "GL Connecting Channel Flows, 1900-present.xlsx", and "GL Diversions, 1900-present.xlsx").

Great Lakes Connecting Channel Flows

They are considered the best available, but may be subject to change with future review. These data for the period 1900-2008 were agreed upon between the offices of the U.S. Army Corps of Engineers (USACE), Detroit and Environment Canada (EC), Cornwall in 2010.

Great Lakes Diversions

These data are considered the best available, but may be subject to change with future review. These data for the period 1900-2008 were agreed upon between the offices of the U.S. Army Corps of Engineers (USACE), Detroit and Environment Canada (EC), Cornwall in 2010.