South Dakota Administrative Rules
Title 41 - Department of Game, Fish And Parks
Article 41:04 - Public waters
Chapter 41:04:04 - Docks
Section 41:04:04:05 - Requirements for dock and floating dock maintenance

(1) All docks and floating docks shall be securely anchored in place to prevent drifting;

(2) All docks and floating docks shall be free of safety hazards and shall be maintained so they do not constitute a public nuisance or severely detract from the aesthetic values of the public waters and the shoreline of adjacent property;

(3) The flotation material used in docks and floating docks shall be composed of low-density, closed-cell, rigid plastic foam; high impact polyethylene, fiber-glass; or other inert materials. Airtight, water-tight containers that are free of toxic or pollutive substances may also be used for flotation;

(4) All electrical wiring, connections, facilities, or appurtenances serving a dock shall conform to the regulations adopted by the South Dakota state electrical commission;

(5) Floating docks that are not attached to or in contact with the shoreline shall, from sunrise to one-half hour after sunset, have attached to them a red flag at least 3 feet above the floor and plainly visible from a distance of at least 150 feet. No such floating dock may remain on the waters from one-half hour after sunset until sunrise except when secured as close to the shoreline as possible. This section does not apply to floating docks placed in areas restricted for swimming by a political subdivision or the department.