Regression Equations for Estimating Flood Discharges for the Eastern Coastal Plain Region of Maryland

Thomas Jr, Wilbert O; Sanchez-Claros, Windsor; Michael Baker International

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Regression Equations for Estimating Flood Discharges for the Eastern Coastal Plain Region of Maryland

2019-11-01
By Thomas Jr, Wilbert O ; Sanchez-Claros, Windsor

English

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Details:

Creators:

Thomas Jr, Wilbert O ; Sanchez-Claros, Windsor

Thomas Jr, Wilbert O ; Sanchez-Claros, Windsor Less -
Corporate Creators:

Michael Baker International
Corporate Contributors:

Maryland. Department of Transportation. State Highway Administration ; United States. Department of Transportation. Federal Highway Administration

Maryland. Department of Transportation. State Highway Administration ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bridge Design Coasts Culverts Floods Frequency Distributions
Publication/ Report Number:

MD-20-SP910B4G-2
Resource Type:

Tech Report
Geographical Coverage:

Maryland ; United States

Maryland ; United States Less -
Edition:

SPR-B Final Report (December 2018-November 2019)
Corporate Publisher:

Maryland Department of Transportation. State Highway Administration
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 Eastern Coastal Plain Region of Maryland. The regression equations were based on flood discharges for 36 stations and drainage area, in square miles; land slope, in percent; and hydrologic soils group A, in percent of the watershed area (five stations were identified as outliers). For the 36 stations used in the analysis, 16 stations are still active and 20 are discontinued stations as of 2017. Many of the small stream stations (less than 10 square miles) were only operated for the period 1965 to 1976 and experienced large floods in this short period of record particularly in 1967 and 1975. Historical information available in the U.S. Geological Survey Peak Flow File were used to adjust the frequency curves to be more representative of a longer record. The updated regression equations will be used by the Maryland Department of Transportation State Highway Administration in the design of bridges and culverts in Maryland. The updated regression equations will also be included in the fifth version of the Maryland Hydrology Panel report entitled “Application of Hydrologic Methods in Maryland” that will be published in 2020.
Format:

PDF
Funding:

SP910B4G
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:ae8417401fad5cf0db08d601e2f53658948ae7c15b5c6e7e113f07c425a2dd3e
Download URL:

https://rosap.ntl.bts.gov/view/dot/63066/dot_63066_DS1.pdf
File Type:

[PDF-2.25 MB]