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

LakeSuperior_BeginningOfMonthWaterLevels_1900to2018

LakeMichiganHuron_BeginningOfMonthWaterLevels_1900to2018

LakeStClair_BeginningOfMonthWaterLevels_1900to2018

LakeErie_BeginningOfMonthWaterLevels_1900to2018

LakeOntario_BeginningOfMonthWaterLevels_1900to2018

Historical Average – Beginning of Month Water Levels

LakeSuperior_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2017

LakeMichiganHuron_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2017

LakeStClair_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2017

LakeErie_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2017

LakeOntario_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2017

Monthly Mean Water Levels

LakeSuperior_MonthlyMeanWaterLevels_1918to2018

LakeMichiganHuron_MonthlyMeanWaterLevels_1918to2018

LakeStClair_MonthlyMeanWaterLevels_1918to2018

LakeErie_MonthlyMeanWaterLevels_1918to2018

LakeOntario_MonthlyMeanWaterLevels_1918to2018

Historical Average – Monthly Mean Water Levels

LakeSuperior_HistoricalAverage_MonthlyMeanWaterLevels_1918to2017

LakeMichiganHuron_HistoricalAverage_MonthlyMeanWaterLevels_1918to2017

LakeStClair_HistoricalAverage_MonthlyMeanWaterLevels_1918to2017

LakeErie_HistoricalAverage_MonthlyMeanWaterLevels_1918to2017

LakeOntario_HistoricalAverage_MonthlyMeanWaterLevels_1918to2017

Monthly Residual Net Basin Supplies

LakeSuperior_MonthlyNetBasinSupply_1900to2018

LakeMichiganHuron_MonthlyNetBasinSupply_1900to2018

LakeStClair_MonthlyNetBasinSupply_1900to2018

LakeErie_MonthlyNetBasinSupply_1900to2018

LakeOntario_MonthlyNetBasinSupply_1900to2018

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:  2018-05-07