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 About The MidWest Chapter

The Hydrographic Society of America (THSOA) is increasing Midwest visibility and outreach with the launch of the THSOA Midwest Chapter. Events will be open to all THSOA members and meetings announcements emailed to those residing in the Midwest.


  • Chair - Washington Bryan,  Great Lakes Dred and Dock Co.
  • Treasurer - Dennis Beulow, Spaceco
  • Secretary - Jon Arleth, Gordie Fraser and Associates

    Mailing Address:

    The Hydrographic Society of America Inc., Midwest Chapter

    310 Busse Highway, #344

    Park Ridge, IL 60068-3251

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