Who We Are
The Hydrographic Society of
America (THSOA) is a non-profit professional membership organization, whose primary focus is to provide support to its members in the Americas. THSOA was incorporated in the State of Maryland, U.S.A. as a non-profit organization in 1984 and was granted 501(c)(3) status as a non-profit organization by the U.S. Internal Revenue Service in 1985. THSOA was formed April 1, 1974.
THSOA celebrated its' 42-year presence in the United States on April 1, 2016. Local chapters have been formed in Houston, Southeast (Louisiana, Mississippi, Alabama and Florida), West Coast (Alaska, Washington, Oregon, and California), Mid West (Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota & Wisconsin), National Capital (Washington DC and surrounding areas) and Latin America (encompassing Mexico, the Caribbean and through to Chile and Argentina). Our total membership now stands at 600+.
On odd numbered years THSOA hosts the U.S Hydrographic Conference which
alternates with the Canadian Hydrographic Conference (held on even
years). THSOA was the co-organizer, with NOAA's Office of Coast Survey
of the original US Hydro Conferences which were held held from
1984-1994. In 1999 THSOA organized the "reborn" US Hydro event. The US
conference draws national and international exhibitors and attendees. 15
different international members were represented at US Hydro 2015.
Hydrographic Societies from around the world are welcomed to attend at
THSOA member rates.
THSOA is recognized as an Observer by the International Hydrographic Organization, an Intergovernmental Organization of maritime nations involved in hydrography and nautical cartography.
As a non-profit organization, THSOA is committed to promoting education in hydrography, inshore surveying, inland waters surveying, offshore surveying, positioning and mapping/charting, including related earth sciences.