| 词条 | Little Missouri River (North Dakota) |
| 释义 |
| name = Little Missouri River | name_native = | name_native_lang = | name_other = | name_etymology = | image = Little Missouri River TR National Park.jpg | image_caption = Flowing through Theodore Roosevelt National Park | map = Littlemissouririvermap.png | map_size = | map_caption = Little Missouri watershed | pushpin_map = USA North Dakota | pushpin_map_size = | pushpin_map_caption= Location of the mouth of the Little Missouri River in North Dakota | subdivision_type1 = Country | subdivision_name1 = United States | subdivision_type2 = State | subdivision_name2 = Wyoming, Montana, South Dakota, North Dakota | subdivision_type3 = | subdivision_name3 = | subdivision_type4 = County | subdivision_name4 = | subdivision_type5 = | subdivision_name5 = | length = {{convert|560|mi|km|abbr=on}}[1] | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location= {{convert|17.5|mi|km}} south of Watford City, about {{convert|25|mi|km}} from the mouth[1] | discharge1_min = {{convert|0|cuft/s|m3/s|abbr=on}} | discharge1_avg = {{convert|534|cuft/s|m3/s|abbr=on}}[2] | discharge1_max = {{convert|110000|cuft/s|m3/s|abbr=on}} | source1 = Flatiron Butte | source1_location = near Oshoto, Crook County, Wyoming | source1_coordinates= {{coord|44|32|25|N|104|59|57|W|display=inline}}[4] | source1_elevation = {{convert|4501|ft|abbr=on}}[3] | mouth = Missouri River[4] | mouth_location = Lake Sakakawea, near Killdeer, Dunn County, North Dakota | mouth_coordinates = {{coord|47|36|38|N|102|52|24|W|display=inline,title}}[5] | mouth_elevation = {{convert|1860|ft|abbr=on}}[5] | progression = | river_system = | basin_size = {{convert|8310|sqmi|abbr=on}}[6] | tributaries_left = | tributaries_right = | custom_label = | custom_data = | extra = }} The Little Missouri River is a tributary of the Missouri River, 560 miles (901 km) long, in the northern Great Plains of the United States.[7] Rising in northeastern Wyoming, in western Crook County about 15 miles (24 km) west of Devils Tower,[8] it flows northeastward, across a corner of southeastern Montana, and into South Dakota. In South Dakota, it flows northward through the Badlands into North Dakota, crossing the Little Missouri National Grassland and both units of Theodore Roosevelt National Park. In the north unit of the park, it turns eastward and flows into the Missouri in Dunn County at Lake Sakakawea, where it forms an arm of the reservoir 30 miles (48 km) long called Little Missouri Bay and joins the main channel of the Missouri about 25 miles (40 km) northeast of Killdeer.[9] The highly seasonal runoff from badlands and other treeless landscapes along the Little Missouri carries heavy loads of eroded sediment downstream.[10] The sedimentary layers, which extend from the headwaters in Wyoming all the way to the mouth in North Dakota, vary in age, but most of the beds along the river belong to the Bullion Creek and Sentinel Butte formations, both deposited during the Paleocene (about 66 to 56 million years ago).[14] The deposits include siltstone, claystone, sandstone, and lignite coal laid down in a coastal plain during the Laramide orogeny.[11] See also
References1. ^{{cite web|title = USGS 06337000 Little Missouri River near Watford City, ND|url=http://waterdata.usgs.gov/nwis/nwisman/?site_no=06337000&agency_cd=USGS|date = November 2010|accessdate=April 27, 2011}} This is the average discharge for the years 1990–2010, derived by adding the discharge for each of these years and dividing by 21. 2. ^{{cite web|title = USGS 06337000 Little Missouri River near Watford City, ND|url=http://waterdata.usgs.gov/nwis/nwisman/?site_no=06337000&agency_cd=USGS|date = November 2010|accessdate=April 27, 2011}} This is the average discharge for the years 1990–2010, derived by adding the discharge for each of these years and dividing by 21. 3. ^Source elevation derived from Google Earth search using GNIS source coordinates. 4. ^{{cite book|author=Federal Writers' Project |title=South Dakota place-names, v.3 |url=http://babel.hathitrust.org/cgi/pt?id=mdp.39015027015455;view=1up;seq=373 |year=1940 |publisher=University of South Dakota |page=4 }}{{dead link|date=May 2017 |bot=InternetArchiveBot |fix-attempted=yes }} 5. ^1 2 {{cite web | work = Geographic Names Information System| publisher = United States Geological Survey | date = February 13, 1980 | url ={{GNIS 3|1034981}}| title = Little Missouri River | accessdate =April 26, 2011}} 6. ^{{cite web|title = USGS 06337000 Little Missouri River near Watford City, ND|url=http://waterdata.usgs.gov/nwis/nwisman/?site_no=06337000&agency_cd=USGS|date = November 2010|accessdate=April 27, 2011}} This is only a close approximation of the entire basin. It does not include a small fraction of the basin below the river gauge, located about 25 mi (40 km) upstream of the river mouth. 7. ^1 {{cite journal|last=Personius|first = Robert Giles|author2=Eddy, Samuel |title = Fishes of the Little Missouri River|journal = Copeia| publisher = American Society of Ichthyologists and Herpetologists|volume=1955|date=February 18, 1955|issue=1| page = 41|doi=10.2307/1439450}} 8. ^{{cite map|title=Wyoming Atlas & Gazetteer|publisher= DeLorme| edition=6th|section= 19|date=2009|isbn=0-89933-338-9}} 9. ^{{cite map|title= The Road Atlas|publisher = Rand McNally & Company|date=2008|section = 61, 77|isbn= 978-0-528-93961-7}} 10. ^{{cite web|title=Little Missouri River Description|publisher=United States Geological Survey|url=http://nd.water.usgs.gov/canoeing/littlemissouri/desc.html|date=December 31, 2007|accessdate=April 27, 2011|archive-url=https://web.archive.org/web/20110723032346/http://nd.water.usgs.gov/canoeing/littlemissouri/desc.html|archive-date=2011-07-23|dead-url=yes|df=}} 11. ^1 {{cite web|last= Bluemle | first= John P.| title= North Dakota Notes #12: North Dakota's Badlands|url=https://www.dmr.nd.gov/ndgs/ndnotes/ndn12.htm|publisher=North Dakota Geological Survey|accessdate=April 27, 2011}} External links
9 : Rivers of Montana|Rivers of North Dakota|Rivers of South Dakota|Rivers of Wyoming|Tributaries of the Missouri River|Rivers of Carter County, Montana|Theodore Roosevelt National Park|Rivers of Harding County, South Dakota|Bodies of water of Crook County, Wyoming |
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