The Yankton flotilla has been an operational unit for over 35 years. Flotilla members hail primarily from Yankton, Vermillion, Sioux Falls and other towns in Southeastern South Dakota.
 

Flotilla 26 actively promotes safe boating by providing public education courses, Nebraska certification classes, free vessel safety checks and safety patrols for Missouri River from mile 835 to the West down to mile 804 to the South and for Lewis and Clark Lake.

The flotilla also supports the active duty Coast Guard, the South Dakota Game, Fish and Parks and the U.S. Army Corps of Engineers by:

• Providing boats and qualified personnel for maintaining river traffic safety during Missouri River marine events such as Riverboat Days, competitions, fire works shows and lighted boat parades. Flotilla 26 maintains a Search and Rescue station at the entry to Yankton Marina.