Yankton County, South Dakota

The county terrain consists of rolling hills, carved by creeks and drainages, hosting several lakes and ponds.

Its highest point is 1,473 ft (449 m) ASL, on the eastern portion of its north boundary line.

[5] Lewis & Clark Lake, a popular regional tourist and recreational destination is found in the southwestern part of the county.

[14] The county is located in South Dakota's At-Large Congressional District, currently held by Republican Dusty Johnson.

The Lewis & Clark Lake area is a popular regional tourist and recreation destination with parks, trails, campgrounds, boat ramps, and marinas.

Gavins Point Dam, which creates Lewis & Clark Lake, is a popular fishing destination on the Missouri River.

[17] The South Dakota Department of Game, Fish, and Parks operates the Lewis & Clark State Recreation Area on the northern shore of the lake.

Below Gavins Point Dam, the Missouri National Recreational River is home to one of the few non-channelized portions of the "Big Muddy", and is popular with birdwatchers, hunters, canoers, and kayakers.

Missouri River in winter downstream from Yankton, with Nebraska below and South Dakota above. This stretch of the river is part of the 59-mile reach of the Missouri National Recreational River .
Gavins Point Dam , impounding Lewis and Clark Lake on the Missouri River in the southwestern part of Yankton County.
View of Lewis and Clark Lake from Lewis & Clark Recreation Area along the South Dakota shore, west of Yankton.