Editing Yankton County, South Dakota (section)

==Geography==
[[File:Lewis & Clark Lake and Dam NE.jpg|thumb|right|[[Gavins Point Dam]], impounding [[Lewis and Clark Lake]] on the [[Missouri River]] in the southwestern part of Yankton County.]]
[[File:LewisandClarkSRA.jpg|thumb|right|View of [[Lewis and Clark Lake]] from [[Lewis & Clark Recreation Area]] along the South Dakota shore, west of Yankton.]]
Yankton County lies on the south side of South Dakota. Its south boundary line abuts the north boundary line of the state of [[Nebraska]] (across the [[Missouri River]]). The Missouri flows eastward along the county's south border. The [[James River (Dakotas)|James River]] flows south-southeastward through the west central portion of the county, discharging into the Missouri near the midpoint of the county's south line. The county terrain consists of rolling hills, carved by creeks and drainages, hosting several lakes and ponds. The area is devoted to agriculture.<ref name=YCSD>[https://www.google.com/maps/place/Yankton+County,+SD/@43.0354538,-97.5236102,11.5z/data=!4m5!3m4!1s0x878f0bd498a60b05:0x419a6b0a4a6476b9!8m2!3d43.016179!4d-97.3516558 ''Yankton County SD''  Google Maps (accessed February 9, 2019)]</ref> The terrain slopes to the south and the east. Its highest point is {{convert|1,473|ft|m|abbr=on}} ASL, on the eastern portion of its north boundary line.<ref>{{Cite web |url=https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm |title="Find an Altitude" Google Maps (accessed February 9, 2019) |access-date=February 10, 2019 |archive-url=https://web.archive.org/web/20190521043409/https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm |archive-date=May 21, 2019 |url-status=dead }}</ref> The county has a total area of {{convert|532|sqmi}}, of which {{convert|521|sqmi}} is land and {{convert|11|sqmi}} (2.1%) is water.<ref>{{cite web|url=http://www2.census.gov/geo/docs/maps-data/data/gazetteer/counties_list_46.txt|publisher=United States Census Bureau|access-date=March 28, 2015|date=August 22, 2012|title=2010 Census Gazetteer Files|archive-date=December 8, 2015|archive-url=https://web.archive.org/web/20151208142443/http://www2.census.gov/geo/docs/maps-data/data/gazetteer/counties_list_46.txt|url-status=live}}</ref>

[[Lewis and Clark Lake|Lewis & Clark Lake]], a popular regional tourist and recreational destination is found in the southwestern part of the county.<ref>{{Cite web |url=https://www.nwo.usace.army.mil/Missions/Dam-and-Lake-Projects/Missouri-River-Dams/Gavins-Point/ |title=Missouri River Dams |access-date=December 16, 2018 |archive-date=December 16, 2018 |archive-url=https://web.archive.org/web/20181216210904/https://www.nwo.usace.army.mil/Missions/Dam-and-Lake-Projects/Missouri-River-Dams/Gavins-Point/ |url-status=live}}</ref>

===Major highways===
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*[[Image:US 81.svg|20px]] [[U.S. Route 81 in South Dakota|U.S. Highway 81]]
*[[Image:SD 46.svg|20px]] [[South Dakota Highway 46]]
*[[Image:SD 50.svg|20px]] [[South Dakota Highway 50]]
*[[Image:SD 52.svg|20px]] [[South Dakota Highway 52]]
*[[Image:SD 153.svg|23px]] [[South Dakota Highway 153]]
*[[Image:SD 314.svg|23px]] [[South Dakota Highway 314]]
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===Airports===
*[[Chan Gurney Municipal Airport]]

===Adjacent counties===
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* [[Turner County, South Dakota|Turner County]] - northeast
* [[Clay County, South Dakota|Clay County]] - east
* [[Cedar County, Nebraska]] - southeast
* [[Knox County, Nebraska]] - southwest
* [[Bon Homme County, South Dakota|Bon Homme County]] - west
* [[Hutchinson County, South Dakota|Hutchinson County]] - northwest
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===Protected areas<ref name=YCSD/>===
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* [[Chief White Crane Recreation Area|Chief White Crane State Recreation Area]]
* Dakota Territorial Capitol Building/Riverside Park
* Diede Waterfowl Production Area
* Edelman Waterfowl Production Area
* [[Gavins Point National Fish Hatchery]]
* Hansen Waterfowl Production Area
* [[Lewis & Clark Recreation Area|Lewis & Clark State Recreation Area]]
* [[Missouri National Recreational River]] (part)
* [[Pierson Ranch Recreation Area|Pierson Ranch State Recreation Area]]
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===Lakes and reservoirs===
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* Beaver Lake
* Guthmiller Lake
* [[Lake Yankton (South Dakota)|Lake Yankton]]
* [[Lewis and Clark Lake]] (part)
* [[Marindahl Lake]]
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