Hydrologic and Hydraulic Calibration—A Case Study (a)

by Robert H. Dalton, Illinois DOT, United States,
Daniel H. Lau, Illinois DOT, United States,
Molly J. O'Toole, Illinois DOT, United States,



Abstract: The Addison Creek watershed is in Cook and DuPage Counties just west of Chicago, Illinois. Because the watershed has a history of major flooding, eight major stormwater and flood control structures have been constructed in the watershed. These structures were planned and constructed over a 20-year time frame using different design standards and methodologies, and were constructed by different agencies. A hydrologic-hydraulic model was developed to evaluate how these structures interacted in controlling flooding. A major effort associated with the model development was the calibration of the hydrologic-hydraulic models. This paper presents some of the unique and interesting aspects of the hydrologic calibration process.

Subject Headings: Hydraulics | Hydrologic models | Case studies | Hydraulic structures | Watersheds | Hydraulic models | Floods | Calibration | Structural models | Structural control | North America | Illinois | United States | Chicago

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