9/4/2023 0 Comments Mdot yazoo project office![]() With significant advancement of acoustic-signal processing, it is possible to profile three-dimensional velocity vectors with a high degree of precision and repeatability. To view or retrieve these data on the Internet, go to: In 1995 the USGS became one of the first organizations to apply this technology to the Internet by developing a real-time Surface Water Data page that provides tabular and graphic forms of continuously updated stage and discharge data, in addition to long-term flow statistics and a gage description. The current surface-water data-collection program in Mississippi provides continuous stage and discharge information for 88 sites, continuous stage information for an additional 7 sites, and periodic stage and discharge information for 59 other sites.Īs of January 1997, 83 of 96 continuously recording streamflow gaging stations were equipped with satellite transmitters. In addition, the USGS responds to thousands of data requests from the general public each year. These data are stored in computerized local and national data bases and disseminated to cooperators, educational institutions, private organizations, and the public in published reports, and by the Internet. The USGS has collected surface-water data in Mississippi since 1899. An example of bridge-abutment scour in central Mississippi. Since 1993, the USGS has completed 102 scour-evaluation studies.įigure 1. In 1993, the USGS, in cooperation with the MDOT, began a 5-year study to evaluate observed and potential scour conditions at selected bridges. The design and maintenance of bridge foundations require consideration of the maximum depth of scour that could occur during an extreme flood. ![]() 1) during floods has resulted in more bridge failures than all other causes in recent history. Streambanks and channel scour near bridge piers and abutments (fig. Also, statistical analyses of streamflow data were provided as requested by the MDOT. Many of the analyses were for multiple bridge openings. This information provides the basis for the design of highways and drainage structures, and it is used by local agencies and the general public to guide floodplain management.ĭuring 1993-96, the USGS completed 264 bridge-site studies in 1996, 104 such studies were completed. Streamflow data are collected to define the hydraulic characteristics of other ungaged sites as requested by the MDOT. USGS streamflow records, hydrologic analyses of basins, and hydraulic analyses of flooding potential at proposed highway bridges provide information used by the MDOT to design those bridges.įlood-frequency and hydraulic characteristics at highway bridges are determined from historic flood elevations recovered by the USGS, cross-section data, and correlations with nearby gaging stations. Geological Survey works closely with the Mississippi Department of Transportation (MDOT). Such information is used in many decisions regarding management and optimum use of Mississippi's natural resources and to address major environmental, economic, and health issues, such as contamination of the environment by hazardous wastes, adequacy of suitable-quality water supplies, nutrient input to streams and estuaries, distribution of coal and mineral resources, and effects of urban development and agriculture on the environment. ![]() Geological Survey (USGS) has provided earth-science information to help others understand and manage the Nation's energy, land, mineral, biological, and water resources. Agricultural Management-Systems Evaluationįor more than 100 years the U.S.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |