Bridge-Site Study Data for Selected Highway Crossings in Mississippi, 2022

Dates

Publication Date: 2023-04-25
Start Date: 2021-07-01
End Date: 2022-06-30

Citation

Storm, J.B., and Baldwin, W.T., 2023, Bridge-Site Study Data for Selected Highway Crossings in Mississippi, 2022: U.S. Geological Survey data release, https://doi.org/10.5066/P9W7THGI.

Summary

The U.S. Geological Survey (USGS) works closely with the Mississippi Department of Transportation (MDOT) to provide information to be used by the MDOT for design of highway-drainage structures. MDOT spends millions of dollars annually for highway construction. Streamflow records, hydrologic analyses of basins, and hydraulic analyses of flooding potential at proposed highway crossings help the MDOT to make more informed decisions on the use of highway construction funding. Flood-frequency and hydraulic characteristics at highway crossings are determined from historical flood-elevation data recovered by the USGS, cross-section data, and correlations with data from nearby gaging stations. Additional streamflow data are collected for ungaged [...]

Summary

The U.S. Geological Survey (USGS) works closely with the Mississippi Department of Transportation (MDOT) to provide information to be used by the MDOT for design of highway-drainage structures. MDOT spends millions of dollars annually for highway construction. Streamflow records, hydrologic analyses of basins, and hydraulic analyses of flooding potential at proposed highway crossings help the MDOT to make more informed decisions on the use of highway construction funding. Flood-frequency and hydraulic characteristics at highway crossings are determined from historical flood-elevation data recovered by the USGS, cross-section data, and correlations with data from nearby gaging stations. Additional streamflow data are collected for ungaged sites when substantial flooding occurs in an area of interest to MDOT. This information not only provides the basis for the design of highways and drainage structures, but is also used by local agencies and the public as a guide in flood-plain management. Data for nine sites in Mississippi that were studied during the State fiscal year 2022 (July 1, 2021, to June 30, 2022) are provided in this data release. The geospatial dataset includes one point feature class shapefile with associated FGDC-compliant metadata representing selected basin characteristics and estimates of eight flood-frequency peak streamflows with corresponding stages, or water-surface elevations for nine sites in Mississippi. Flood-frequency streamflows were determined using methods described by Anderson (2018). Water-surface elevations were determined using methods described by Rantz (1982a, 1982b). Also included are input files of the step-backwater model described by Shearman (1990).

Contacts

Process Contact :: John B Storm
Originator :: John B Storm
Metadata Contact :: John B Storm
Publisher :: U.S. Geological Survey
SDC Data Owner :: Lower Mississippi-Gulf Water Science Center
USGS Mission Area :: Water Resources
Distributor :: U.S. Geological Survey - ScienceBase

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MDOT_Bridge_Sites_2022.xml Original FGDC Metadata	View	43.1 KB	application/fgdc+xml
MDOT_Bridge_Sites_2022.csv		4.45 KB	text/csv
WSPRO_2022.zip		9.16 KB	application/zip
WSPRO_Readme.txt		1.86 KB	text/plain
MDOT_Bridge_Sites_2022.zip		23.74 KB	application/zip

Related External Resources

Type: Citation

Anderson, B.T., 2018, Flood frequency of rural streams in Mississippi, 2013: U.S. Geological Survey Scientific Investigations Report 2018–5148, 12 p.	https://doi.org/10.3133/sir20185148
Rantz, S.E., and others, 1982a, Measurement and Computation of Streamflow--vol.1, Measurement of Stage and Discharge: U.S. Geological Survey Water-Supply Paper 2175, p. 1-284	https://doi.org/10.3133/wsp2175
Rantz, S.E., and others, 1982b, Measurement and Computation of Streamflow--vol.2, Computation of Discharge: U.S. Geological Survey Water-Supply Paper 2175, p. 285-631	https://doi.org/10.3133/wsp2175
Shearman, J.O., 1990, User’s manual for WSPRO—A computer model for water-surface profile computations: U.S. Department of Transportation Publication No. FHWA–IP–89–027, Hydraulic Computer Programs HY–7, 177 p.	https://water.usgs.gov/software/WSPRO/

Purpose

The purpose of this data release is to present selected basin characteristics and estimates of eight flood-frequency peak streamflows with corresponding water-surface elevations for exceedance probabilities of 50, 20, 10, 4, 2, 1, 0.5, and 0.2 percent that correspond to recurrence intervals of 2, 5, 10, 25, 50, 100, 200, and 500 years, respectively, for nine sites in Mississippi that were studied during the State fiscal year (July 1, 2021, to June 30, 2022). Bridge-site studies are funded by a cooperative program with the Mississippi Department of Transportation.

Bridge-Site Study Data for Selected Highway Crossings in Mississippi, 2022

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