Coordinating Committee Products and Datasets

Hydraulic Subcommittee

Methodologies for conducting hydraulic discharge methods in the Great Lakes Connecting Channels

Database of binational discharge measurements

Monthly flow records for the Connecting Channels:

  • St. Marys River
  • St. Clair River
  • Detroit River
  • Niagara River
  • St. Lawrence River

Methodologies for coordinating the computation of streamflow

Diversions in the Great Lakes system

Conveyance change monitoring reports

Hydrology Subcommittee

Coordinated:

Beginning of Month Water Levels:

Historical Average – Beginning of Month Water Levels:

Monthly Mean Water Levels:

Historical Average – Monthly Mean Water Levels:

Monthly Residual Net Basin Supplies:

Historical Precipitation (1900-2014):

Vertical Control – Water Levels Subcommittee

Coordinated:

  • International Great Lakes Datum (1955)
  • International Great Lakes Datum (1985)
  • International Great Lakes Datum Update Plan
  • Elevation and other information on bench marks
  • Vertical velocity models
  • Hydraulic corrector models
  • Gravity models
  • GPS campaigns used for crustal movement monitoring, and both historic and present datum transformation methodologies
  • Water level data collection methodologies
  • Low water datum values and determination methods
  • Low water datum step planes for the interconnecting channels and the St. Lawrence River
  • Water level gauging network adequacy assessments
  • Data calculation methods including individual station data averaging and also lake-wide average calculation methods

Coordinated Great Lakes Regulation and Routing Model Update Subcommittee

Coordinated Great Lakes Regulation and Routing Model

Coordinated Great Lakes Regulation and Routing Model Update Plan

Last revised: 2019-05-21