Several suggestions here...
Visit with our buddies at the Department of Wildlife and Fisheries Sciences at SDSU in Brookings. They might be interested in assisting with advice and then monitoring what you do from time to time. You should be able to stock some fish that would become a good fishery.
JHAP is correct...we need to know your goals before giving any advice here.
Focus on native species of fish which do well in small ponds in SE South Dakota...specifically: pumpkinseed sunfish, yellow perch and smallmouth bass. Those are the main choices. There are other fish, but those three are most commonly stocked. The pumpkinseeds may not be readily available from hatcheries there.

Teach a man to grow fish...
He can teach to catch fish...