Floyd River
title: "Floyd River" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["rivers-of-iowa", "tributaries-of-the-missouri-river", "rivers-of-o'brien-county,-iowa", "rivers-of-plymouth-county,-iowa", "sioux-city,-iowa", "rivers-of-sioux-county,-iowa", "rivers-of-woodbury-county,-iowa"] topic_path: "general/rivers-of-iowa" source: "https://en.wikipedia.org/wiki/Floyd_River" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox river"]
| Field | Value |
|---|---|
| name | Floyd River |
| image | Missouri-Floyd Rivers Sioux City Iowa.jpg |
| image_caption | Confluence of the Missouri and Floyd Rivers in Sioux City |
| image_size | 300 |
| map | Floyd river watershed.jpg |
| map_size | 300 |
| map_caption | Floyd River watershed (Interactive map) |
| subdivision_type1 | Country |
| subdivision_name1 | United States |
| subdivision_type2 | State |
| subdivision_name2 | Iowa |
| subdivision_type4 | District |
| subdivision_name4 | Woodbury County, Iowa, Plymouth County, Iowa, Sioux County, Iowa, O'Brien County, Iowa |
| discharge1_location | mouth |
| discharge1_avg | 340 cuft/s (estimate) |
| source1_location | O'Brien County, near Silver Ave and 290th St. |
| source1_coordinates | |
| mouth | Missouri River |
| mouth_coordinates | |
| mouth_elevation | 1079 ft |
| basin_size | 2400 km2 |
| :: |
| name = Floyd River | name_native = | name_native_lang = | name_other = | name_etymology = | image = Missouri-Floyd Rivers Sioux City Iowa.jpg | image_caption = Confluence of the Missouri and Floyd Rivers in Sioux City | image_size = 300 | map = Floyd river watershed.jpg | map_size = 300 | map_caption = Floyd River watershed (Interactive map) | pushpin_map = | pushpin_map_size = | pushpin_map_caption= | subdivision_type1 = Country | subdivision_name1 = United States | subdivision_type2 = State | subdivision_name2 = Iowa | subdivision_type3 = | subdivision_name3 = | subdivision_type4 = District | subdivision_name4 = Woodbury County, Iowa, Plymouth County, Iowa, Sioux County, Iowa, O'Brien County, Iowa | subdivision_type5 = | subdivision_name5 = | length = | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location= mouth | discharge1_avg = 340 cuft/s (estimate) | source1 = | source1_location = O'Brien County, near Silver Ave and 290th St. | source1_coordinates= | source1_elevation = | mouth = Missouri River | mouth_location = | mouth_coordinates = | mouth_elevation = 1079 ft | progression = | river_system = | basin_size = 2400 km2 | tributaries_left = | tributaries_right = | custom_label = | custom_data = | extra =
The Floyd River is a tributary of the Missouri River, 112 mi long, in northwestern Iowa in the United States. It enters the Missouri at Sioux City, and is named for Charles Floyd, a member of the Lewis and Clark Expedition.
Course
The Floyd River rises in northwestern O'Brien County near the town of Sanborn and flows generally southwestwardly through Sioux, Plymouth and Woodbury counties, past the towns of Sheldon, Hospers, Alton, Le Mars, Merill, and Hinton. At Merrill the Floyd collects its largest tributary, the West Branch Floyd River, which is about 40 mi (65 km) long. The West Branch rises near Boyden in northeastern Sioux County and flows generally southward into Plymouth County, past Maurice and Struble. The Floyd enters Woodbury County near the Leeds neighborhood of Sioux City.
The Floyd River has come out of its banks on several occasions, causing disastrous flooding in Sioux City in 1892 and 1953. The river has since been the focus of an intensive flood control project. The Floyd's lower channel through Sioux City has been straightened, channelized, lined with riprap and banked by a high earthen levee.
The Floyd River is the site of frequent fish kills caused by runoff of massive amounts of animal waste from farm feedlots into the river.
Charles Floyd
::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/bb/Lewis_clark_Boyer_soldier_littlesioux_floyd.jpg" caption="This excerpt from the Lewis and Clark map of 1814 shows the rivers of western Iowa. The Floyd is seen at the upper left of the map."] ::
Charles Floyd, for whom the river is named, was a U.S. Army sergeant who was born in Kentucky and was one of the first to enlist in the Lewis and Clark Expedition. On August 19, 1804, just three months into the two-year journey, Floyd became violently ill and died the next day of what is believed to have been a ruptured appendix. He was buried on a hill overlooking an unnamed river on the Iowa side of the Missouri River. In his honor, the expedition's leaders, Meriwether Lewis and William Clark, named the river Floyd River and the hill Floyd's Bluff. Floyd was the expedition's only casualty, despite the many dangers encountered in the 8,000 miles traveled in reaching the Pacific Ocean and returning to St. Louis.
Gallery
File:Floyd River Le Mars.jpg|The Floyd River near Le Mars, Iowa File:Floyd River2.jpg|A channelized section of the Floyd River in Sioux City, just above its mouth at the Missouri River File:Missouri-Floyd Rivers Sioux City Iowa.jpg|Confluence of the Missouri and Floyd Rivers in Sioux City
Notes
References
- Columbia Gazetteer of North America entry
- DeLorme (1998). Iowa Atlas & Gazetteer. Yarmouth, Maine: DeLorme. .
References
- [[United States Environmental Protection Agency]]. "Watershed Report: Floyd River".
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. [http://viewer.nationalmap.gov/viewer/ The National Map] {{webarchive. link. (2012-03-29 , accessed March 30, 2011)
- Gannett, Henry. (1905). "The Origin of Certain Place Names in the United States". Govt. Print. Off..
- "Threatening Iowa's Future". The Environmental Integrity Project, May 2004, "http://www.environmentalintegrity.org/pdf/publications/Report_Threatening_lowa_Future.pdf"
- Clarke, Charles G.. "The Men of the Lewis & Clark Expedition". Center for Great Plains Studies, [[University of Nebraska–Lincoln]].
- Clark, William. (August 19, 1804). "The Journals of the Lewis and Clark Expedition". Center for Great Plains Studies, [[University of Nebraska–Lincoln]].
- "Lewis & Clark: The Journey of the Corps of Discovery (Ken Burns Film)". [[PBS]].
- Clark, William. (August 20, 1804). "The Journals of the Lewis and Clark Expedition". Center for Great Plains Studies, [[University of Nebraska–Lincoln]].
- Roos, David. (January 16, 2020). "Lewis and Clark: A Timeline of the Extraordinary Expedition". [[History (American TV channel).
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