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Updated Coordinated Net Basin Supply Estimates for the Great Lakes as Computed Using the Residual Method

Nannette Noorbakhsh;David Fay
Historical coordinated monthly net basin supply (NBS) estimates developed using the residual method were updated for each of the Great Lakes and used for the purposes of formulating and evaluating Lake Superior regulation plans, investigating hydroclimate trends and impacts on upper Great Lakes water levels, the conveyance of the St. Clair River, and other issues related to the drop in head difference between Lake Michigan-Huron and Lake Erie. The NBS datasets generated by the residual method were developed under the auspicious of the Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data, and take into account coordinated estimates of inflow, outflow, change in storage and diversions for each lake.
Summary Report on Coordinated Residual NBS for the IUGLS
Revised St. Clair & Detroit Monthly Flows & Lake-to-Lake Equations
Revising Historical Monthly Niagara River Flows at Buffalo
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Coordinated Residual Net Basin Supplies
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Main Topics
Hydroclimate Information
Questions We Asked
What are the historical NBS estimates & how have changes affected lake levels?
What impacts could climate variations have on regulation?
View all 3 questions we asked
What impacts could climate variations have on levels?
Understanding the Water Balance
Assessing Reliability of Historical Data
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Water Supply Sequences