SDCL § 46A-10A-67: Acquisition of easements.

An easement for a drainage right may be acquired by the existence of a drainage ditch for a period of at least twenty consecutive years, by purchase or grant of easement from the owner of land through which the ditch will pass, or by condemnation under the provisions of this chapter and chapter 46A-11.

Source: SL 1985, ch 362, § 68.