Law enforcement in Bon Homme County is on the states digital system. However, their talk groups are encrypted. Fire\Ems are paged out on analog. Fire\ems traffic is a mixture of analog and digital. The fire talk groups are in the clear. Highway Patrol dispatch talk groups are in the clear. HP car to car traffic is a mix of in the clear and encrypted.
When you get your scanner, you should plug in Vermillion, Turkey Ridge, Tripp, and Mitchell state radio communication talk groups, the same Inter-agency talk groups, and Mitchell, Vermillion HP car to car talk groups. SD Game fish and Parks, and DOT are also on the digital system. You can also pickup up Yankton, Charles Mix, and Huchinson County's law enforcement, since they are also on the states system and in the clear.
You should also be able to pickup traffic from Knox County Nebraska, and Nebraska state patrol as well. Knox County is on analog, and NE state patrol is on the Nebraska state wide system. You should be able to pick up the Niobrara digital tower over there.