U.S. Masters Swimming (USMS) exists to promote fitness and health in adults by offering and supporting Masters Swimming programs. USMS was founded in 1970 and currently has over 54,000 members. It supports and encourages competition, but more than half of its members are fitness swimmers who do not compete. USMS is one of five organizations which comprise "United States Aquatic Sports", which is a member of FINA, the international governing body for aquatic sports.
|LMSC Name:||South Dakota|
|Geographic Region:||The state of South Dakota.|
2013-2014 Season: 91 members, 1 club|
2012-2013 Season: 90 members, 1 club
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