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  • Site 31 Mississippi River Bathymetry and Velocimetry Data at Structure A5054 on Interstate 72 at Hannibal, Missouri, June 2014 and July 2018

    Metadata Updated: November 12, 2020

    These data are high-resolution bathymetry (riverbed elevation) and depth-averaged velocities in ASCII format, generated from hydrographic and velocimetric surveys of the Mississippi River near structure A5054 on Interstate 72 at Hannibal, Missouri, in 2014 and 2018. Hydrographic data were collected using a high-resolution multibeam echosounder mapping system (MBMS), which consists of a multibeam echosounder (MBES) and an inertial navigation system (INS) mounted on a marine survey vessel. Data were collected as the vessel traversed the river along planned survey lines distributed throughout the reach. Data collection software integrated and stored the depth data from the MBES and the horizontal and vertical position and attitude data of the vessel from the INS in real time. Data processing required computer software to extract bathymetry data from the raw data files and to summarize and map the information. Velocity data were collected using an acoustic Doppler current profiler (ADCP) mounted on a survey vessel equipped with a differential global positioning system (DGPS). Data were collected as the vessel traversed the river along planned transect lines distributed throughout the reach. Velocity data were processed using the Velocity Mapping Toolbox (Parsons and others, 2013), and smoothed using neighboring nodes.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date August 13, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) January 29, 2020 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from DOI Open Data

    Additional Metadata

    Resource Type Dataset
    Metadata Date August 13, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) January 29, 2020 (publication)
    Responsible Party USGS Central Midwest Water Science Center (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: None, Access Constraints: None
    Bbox East Long -91.3531
    Bbox North Lat 39.7235
    Bbox South Lat 39.7163
    Bbox West Long -91.3626
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Map view of the Mississippi River near Interstate 72 at Hannibal, Missouri, on July 18, 2018. Colored region is the channel floor; green, yellow, orange, and red show subsequently shallower depths of the channel, whereas cyan, blue, and purple show subsequently greater depths.
    Graphic Preview File site-31_MississippiRiver_I-72_bathymetry_2018-07.jpg
    Graphic Preview Type JPG
    Licence Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2014-06-05
    Temporal Extent End 2018-07-18

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