United States Department of Transportation
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Regression Equations for Estimating Flood Discharges for the Piedmont, Blue Ridge, and Appalachian Plateau Regions in Western Maryland
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2016-03-01
[PDF-1.32 MB]
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TRIS Online Accession Number:01596674
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Edition:Final Report
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Abstract:Regression equations were updated for estimating the 1.25-. 1.50-, 2-, 5-, 10-, 25-, 50-, 100-, 200- and 500- year flood discharges for the Piedmont, Blue Ridge and Appalachian Plateau Regions in western Maryland. The regression equations applicable to the Piedmont and Blue Ridge Region were based on flood discharges for 96 stations and drainage area, in square miles; impervious area, in percent of the watershed; limestone, in percent of the watershed; and forest cover, in percent of the watershed. The regression equations applicable to the Appalachian Plateau Region were based on flood discharges for 24 stations and drainage area, in square miles and land slope, in feet per foot. The revised regression equations will be used by the Maryland State Highway Administration in the design of bridges and culverts in Maryland. The updated regression equations will be included in the fourth version of the Maryland Hydrology Panel report entitled “Application of Hydrologic Methods in Maryland”.
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