Great Lakes Coordinating Committee If you need information on these datasets, or are looking for other datasets please contact:
info at greatlakescc.org
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
NiagaraRiver_MonthlyFlow_1900to2020.csv
- 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_1900to2021.csv
- LakeMichiganHuron_BeginningOfMonthWaterLevels_1900to2021.csv
- LakeStClair_BeginningOfMonthWaterLevels_1900to2021.csv
- LakeErie_BeginningOfMonthWaterLevels_1900to2021.csv
- LakeOntario_BeginningOfMonthWaterLevels_1900to2021.csv
Beginning of Month Water Levels – Historical Average:
- LakeSuperior_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2020
- LakeMichiganHuron_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2020
- LakeStClair_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2020
- LakeErie_HistoricalAverage_MonthlyMeanWaterLevels_1918to2020
- LakeOntario_HistoricalAverage_BeginningOfMonthWaterLevels_1918to2020
Monthly Mean Water Levels:
- LakeSuperior_MonthlyMeanWaterLevels_1918to2021
- LakeMichiganHuron_MonthlyMeanWaterLevels_1918to2021
- LakeStClair_MonthlyMeanWaterLevels_1918to2021
- LakeErie_MonthlyMeanWaterLevels_1918to2021
- LakeOntario_MonthlyMeanWaterLevels_1918to2021
Historical Average – Monthly Mean Water Levels:
- LakeSuperior_HistoricalAverage_MonthlyMeanWaterLevels_1918to2019
- LakeMichiganHuron_HistoricalAverage_MonthlyMeanWaterLevels_1918to2019
- LakeStClair_HistoricalAverage_MonthlyMeanWaterLevels_1918to2019
- LakeErie_HistoricalAverage_MonthlyMeanWaterLevels_1918to2019
- LakeOntario_HistoricalAverage_MonthlyMeanWaterLevels_1918to2019
Monthly Residual Net Basin Supplies:
- LakeSuperior_MonthlyNetBasinSupply_1900to2021
- LakeMichiganHuron_MonthlyNetBasinSupply_1900to2021
- LakeStClair_MonthlyNetBasinSupply_1900to2021
- LakeErie_MonthlyNetBasinSupply_1900to2021
- LakeOntario_MonthlyNetBasinSupply_1900to2021
Historical Precipitation:
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: 2022-02-01