- Platte River
Platte River Nebraska River, Shallow River RiverPlatte River at Mahoney State Park Country United States State Nebraska Region Great Plains Part of Missouri River basin Tributaries - left North Platte River, Loup River - right South Platte River Cities North Platte, Kearney, Grand Island, Fremont, Omaha Primary source North Platte River - location Confluence of Grizzly Creek and Little Grizzly Creek, Jackson County, Colorado - elevation 8,050 ft (2,454 m) - coordinates  Secondary source South Platte River - location Confluence of Middle Fork and South Fork South Platte Rivers, Weld County, Colorado - elevation 8,785 ft (2,678 m) - coordinates  Source confluence - location Near North Platte, Lincoln County, Nebraska - elevation 2,762 ft (842 m)  - coordinates  Mouth Missouri River - location Cass / Sarpy counties, at Plattsmouth, Nebraska - elevation 942 ft (287 m)  - coordinates  Length 310 mi (499 km), West-east Basin 84,910 sq mi (219,916 km2)  Discharge for Louisville, 10 miles (16 km) above the mouth - average 7,037 cu ft/s (199 m3/s)  - max 160,000 cu ft/s (4,531 m3/s) - min 131 cu ft/s (4 m3/s)
The Platte River is a major river in the state of Nebraska and is about 310 mi (500 km) long. Measured to its farthest source via its tributary the North Platte River, it flows for over 1,050 miles (1,690 km). The Platte River is a tributary of the Missouri River, which in turn is a tributary of the Mississippi River which flows to the Gulf of Mexico. The Platte over most of its length is a muddy, broad, shallow, meandering stream with a swampy bottom and many islands—a braided stream. These characteristics made it too difficult even for canoe travel, and it was never used as a major transportation route by European-American trappers or explorers.
The Platte is one of the most significant tributary systems in the watershed of the Missouri, draining a large portion of the central Great Plains in Nebraska and the eastern Rocky Mountains in Colorado and Wyoming. The river valley played an important role in the westward expansion of the United States, providing the route for several major emigrant trails, including the Oregon, California, Mormon and Bozeman trails. The first Europeans to see the Platte were French explorers and fur trappers about 1714; they first called it the Nebraskier (Nebraska), a transliteration of the name given by the Otoe people, meaning "flat water".
The Platte River is formed in western Nebraska east of the city of North Platte, Nebraska by the confluence of the North Platte and the South Platte Rivers, which both arise from snowmelt in the eastern Rockies east of the Continental Divide.
In central north Colorado is the North Park (Colorado basin) valley, ringed by mountains of 12,000 feet (3,700 m) height; this is where the North Platte River originates. The head of the North Platte River is essentially all of Jackson County; its boundaries are the continental divide on the east and south and the mountain drainage peaks on the east—the north boundary is the state of Wyoming. The nearest Colorado town is Walden, the county seat. The rugged Rocky Mountains Continental Divide surrounding Jackson County have at least twelve peaks over 11,000 feet (3,400 m) in height. From Jackson County, the North Platte flows north about 200 miles (320 km) out of the Routt National Forest and North Park near what is now Walden to Casper, Wyoming. Shortly after passing Casper, the North Platte turns to the east-southeast and flows about 350 miles (560 km) to the city of North Platte, Nebraska. In Colorado and Wyoming, the North Platte is narrower and much swifter flowing than it is in Nebraska, where it becomes a slow flowing, shallow braided stream.
The North Platte River has been dammed about eight times for water storage and irrigation purposes in Wyoming and Nebraska as it flows to its confluence with the South Platte River. The upper reaches of the river in the Rockies in Colorado and Wyoming are popular for recreation rafting and lure and fly fishing for rainbow, brown, cutthroat trout and other sport fish. In western Nebraska, the banks and riverbed of the North Platte provide a green oasis amid an otherwise semi-arid region of North America. Today, by the time the North Platte reaches Paxton, Nebraska it is much smaller due to the extensive water taken from it for irrigation. Historically, the North Platte River used to be up to a mile wide (1.6 km) in many places, as evidenced by the old streambed and historic written records.
The South Platte River drainage includes about 28,000 square miles (73,000 km2) in the north east corner of Colorado, parts of southeastern Wyoming in the vicinity of the city of Cheyenne and a small part of the southwest corner of Nebraska. The South Platte drains a large part of the Front Range mountains east of the continental divide. The part of the river labeled the South Platte is formed in Park County, Colorado, located southwest of Denver, in the South Park grassland basin and mountains east of the continental divide. It is formed by the confluence of the South Fork South Platte River and Middle Fork South Platte River, approximately 15 miles (24 km) southeast of Fairplay, Colorado. After the South and Middle fork join, the South Platte flows east-southeast till it exits Elevenmile Reservoir; it turns almost ninety degrees to skirt the west side of Pikes Peak and flows roughly east-northeast about 100 miles (160 km) through Denver and on to Greeley, Colorado. From Greeley, the South Platte turns east and flows about 200 miles (320 km) to its confluence with the North Platte River near the city of North Platte, Nebraska.
The South Platte River has been dammed about twenty times for water storage, drinking water and irrigation purposes in Colorado as it flows to its confluence with the North Platte River. The total number of dams in the South Platte drainage may exceed 1,000 as nearly all major streams have at least one dam on them. The South Platte River serves as the principal source of water for arid eastern Colorado. The South Platte River valley provided a major emigration path to Denver. The wagon trails followed the south side of the Platte/North Platte River. Wagon trains were ferried or waded in low water years across the swampy-bottomed South Platte River in several places to stay on the south side of the North Platte River where the trails were located. Miners who later went on to Denver followed the South Platte River trail into Colorado.
After the North Platte and the South Platte rivers join to form the Platte River, over most of its length it is a muddy, broad, shallow, meandering stream with a swampy bottom and many islands—a braided stream. Its muddy water, many shallow channels and islands and ever-changing mud bars made it too difficult for even canoe travel; it was never used as a major water transportation route. The Platte flows in a large arc, east-southeast to near Fort Kearny and then east-northeast, across Nebraska south of Grand Island and on to Columbus. The Platte River is joined from the north by the about 70 miles (110 km) long Loup River about 5 miles (8 km) southeast of Columbus. During pioneer days, a Loup River ferry crossed the river. From Columbus, the Platte flows almost due east about 50 miles (80 km) past North Bend and then on to Fremont.
Near Fremont, the Platte bends south and then east around the location of Omaha in a large "L" turn. Near Fremont the Platte turns sharply and flows south-southeast about 10 miles (16 km) to about Waterloo, Nebraska--located about 20 miles (32 km) west of Omaha. Near Waterloo the Platte turns even more and heads almost due south for about 10 miles (16 km). About 30 miles (48 km) east-southeast of Waterloo and about 30 miles (48 km) from the Platte's confluence with the Missouri River, the Platte is joined from the north by the Elkhorn River. The Elkhorn, a 290 miles (470 km) long river, originates in the eastern Sandhills of Nebraska and is one of the largest tributaries of the Platte River. The Elkhorn joins the Platte on its south-bound path just southwest of Omaha, approximately 1 mile (2 km) south and 3 miles (5 km) west of Gretna. The pioneers leaving from near Omaha (established 1854) or Council Bluffs, Iowa (established 1846) used the Mormon Trail north of the Platte River and had to ferry across the Elkhorn. After the Union Pacific railroad was constructed west from Omaha in 1866, it had to build a major bridge across the Elkhorn. After the confluence of the Elkhorn and the Platte River, the Platte continues southward, about 7 miles (11 km) miles before it turns sharply and heads almost due East for about 20 miles (32 km) before its confluence with the Missouri River. Sarpy County is shaped like a crescent, being bounded on the east by the Missouri River, on the south and west by the Platte, and on the north by Douglas County which contains Omaha. The Platte-Missouri River confluence is about 10 miles (16 km) south of Omaha.
Including the North Platte River, the Platte River stretches over 850 miles (1,400 km), with a drainage basin of about 90,000 square miles (230,000 km2). The mean annual flow is estimated at 3,240 cu ft/s (92 m3/s). The Platte drains one of the most arid areas of the Great Plains with a flow that is considerably lower than rivers of comparable length in North America. For much of its length, it is a classic wide, muddy and shallow braided stream which in the lower reaches flows in a floodplain bordered by bluffs. During pioneer days, the common humorous description was that the Platte was "a mile wide at the mouth, but only six inches deep." 49ers said it was "too thick to drink, too thin to plow". In western Nebraska, the banks and riverbed of the Platte provide a green oasis amid an otherwise semi-arid region of North America. The central Platte River valley is an important stopover for migratory water birds, such as the Whooping Crane and Sandhill Crane, in their yearly traversal of the Central Flyway. A decent map of the Platte and other rivers in Nebraska is at the geology.com site.
Since the mid-20th century, this river has shrunk significantly. This reduction in size is attributed in part to its waters being used for irrigation, and to a much greater extent to the waters diverted and used by the growing population of Colorado, which has outstripped the ability of its groundwater to sustain them.
Varying cultures of indigenous peoples lived intermittently along the Platte for thousands of years before European exploration. Historical tribes claimed various territories in the region. The Indian tribes typically visited different areas in different seasons, as they followed the bison herds for hunting periods. The introduction of horses, which had escaped from early Spanish explorers in the 1540s, dramatically changed life in the Great Plains. Indian tribes could more easily follow the buffalo herds as they migrated from north to south and back. Before 1870, herds of several 100,000 buffalo periodically migrated across the Platte in following seasonal pasture. The animals often waded or swam across the Platte. The first-known European to see the Platte was the French explorer Étienne de Veniard, sieur de Bourgmont in 1714, who named it the Nebraskier, after its Oto name, meaning "flat water". The French later applied the French word plate (meaning flat, and pronounced plat, or platte) to the river.
Occupied by various Indian tribes for part of each year, the Platte River territory had been claimed by both Spanish and French explorers trying to rule the Great Plains. Spain had "claimed" all of the Great Plains after Coronado's 1541-42 expedition. Jose Naranjo, an African-Hopi who served as a Spanish scout and explorer in the Southwest, was a war captain of the Spanish Indian auxiliaries. By 1714 (the same year the French explorers "discovered" the Platte), he and a small exploration group from the south had reportedly already reached the Platte three times. He later guided the 1720 Villasur expedition to the area in a Spanish effort to stop French expansion onto the Great Plains. Naranjo and Villasur's party made the most northern of Spanish exploration trips into the central plains. A Pawnee and Otoe Indian attack defeated the Spanish forces; the survivors returned to Santa Fe, New Mexico, and the Spanish left the Great Plains to the American Indians.
As a result of the Seven Years War (1756–1763) (called the French and Indian War in America), the French ceded all of their lands in North America east of the Mississippi River to the British. The Spanish took over lands west of the Mississippi River. Since there were few fur-bearing animals on the Platte of interest to the fur traders, the French and British explorers and fur trappers ignored the Platte territory for some time. During the course of the Napoleonic Wars (1803–1815), France briefly reacquired the land west of the Mississippi River from Spain.
In 1804, Napoleon sold the area west of the Mississippi River to the United States in the Louisiana Purchase; the US roughly doubled its area at a cost of about $15,000,000. In 1820 the U.S. Army ordered Major Stephen H. Long to explore and map the area around the Platte. Long reported the area as a great American "desert," ignoring that the "desert" provided habitat for more than a million buffalo and numerous American Indians had long lived in the area. As a result of his and other reports, the United States initially had little interest in settling the land on the plains. The next "good" land was believed to be in Oregon or California, especially the coastal areas, and those were the destinations of most emigrant traffic. The Mormons settled Utah, largely due to religious persecution in eastern areas. Various gold and silver strikes attracted further emigration to nearly all western states.
The Native American trail west along the Platte, North Platte River and Sweetwater River was first written about after its discovery in 1811 by Wilson Price Hunt of the Astor Expedition. He was returning to the Missouri River posts from the newly established Fort Astoria on the Columbia River near the Pacific Ocean. Because few American trappers and settlers were then in the contested Oregon Territory, his trail discovery was little used and nearly forgotten.
In 1823 Jedediah Smith and several trappers "rediscovered" the route. The trail along the Platte, North Platte and Sweetwater rivers became a major route of fur traders to their summer Rocky Mountain Rendezvous. In 1824 fur trappers and traders directing mule trains carrying trade goods and supplies for the mountain men were some of the first European-American parties to use the trail. On their return trip, the fur traders carried out for furs destined for eastern markets. The fur trade route was used to about 1840.
By about 1832, the fur traders had improved the trail along the Platte, North Platte, and Sweetwater rivers to a rough wagon trail from the Missouri River to the Green River in Wyoming, where most of the Rocky Mountain Rendezvous were held. In 1834 Benjamin Bonneville, a United States Army officer on leave, led an expedition to the west financed by John Jacob Astor. They took wagons along the Platte, North Platte and Sweetwater River trail to the Green River in present-day Wyoming. The notable author Washington Irving wrote an account of Bonneville's explorations in the west that made him well-known in the United States.
Following the fur traders, the major emigration trails established along the north and south banks of the Platte and North Platte River were the Oregon (1843–1869), California (1843–1869), Mormon (1847–1869) and the Bozeman (1863–68) trails. This network of trails, sometimes called the Emigrant Trails or the Great Platte River Road, all went west along both sides of the Platte River. The route along the Platte River included all these emigration trails and was developed as an important trail route used by migrant wagon trains for westward United States expansion after 1841. The settlement of the Oregon boundary dispute with Britain in 1846, the conclusion of the Mexican American War in 1848, and the California Gold Rush in 1849 and other gold and silver strikes rapidly attracted increased emigrant traffic west.
The Platte River in the future state of Nebraska and the North Platte River in Wyoming typically had many channels and islands. The waterways were often too shallow, crooked, muddy and unpredictable for even a canoe to travel far. The Platte River valley provided an easily passable wagon corridor; it sloped gradually up in height as it went almost due west from the Missouri. The Platte route had access to water, grass, buffalo and buffalo 'chips,' which the Indians and emigrants used as fuel for fires. Long Native American use had created trails on both sides of the muddy, about 1 mile (1.6 km) wide and shallow (2 inches (5.1 cm) to 60 inches (150 cm)) Platte River. The Platte's water was silty and bad tasting, but it was usable if no other water was available. Emigrants learned to let it sit in a bucket for an hour or so to settle most of the silt. The trail(s) through the Platte River Valley extended about 450 miles (720 km) in the present state of Nebraska. Nearly all the trails from the Missouri converged on the Platte River at or before Fort Kearny in mid-state Nebraska. Historians have estimated about 400,000 emigrants followed the trails along the Platte.
The Pony Express, operational from 1860–61, and the First Transcontinental Telegraph, completed in 1861, both followed the earlier emigrant trails along the Platte. The completion of the telegraph put the Pony Express out of business as it could provide much faster east-west communication. In 1866 the Union Pacific portion of the first transcontinental railroad was constructed along the Platte River as it started west from Omaha. In the 20th century, the Lincoln Highway and later Interstate 80 were constructed through the Platte valley; the highways parallel the Platte and the North Platte through much of Nebraska.
Many of Nebraska’s larger cities originated on or near the Platte River, as it was the first path of transportation. These include Omaha (est. 1854), Fort Kearny (est. 1848), Grand Island (est. 1857) and North Platte (est. 1869). In 1859 settlers built the first irrigation ditch to divert water from the Platte for farming.
The Platte is in the middle of the Central Flyway, a primary North-South corridor for migratory birds from their summer nesting grounds in the north (Alaska and Canada), south for the winter, and the return in the spring. The Central Flyway bird species include trumpeter swans, tundra swans, over one million Canadian geese, Greater White-fronted Geese, Sandhill Cranes, Canvasback ducks and others. Other species such as bald eagles, herons and several species of ducks migrate through the Platte River area but over shorter distances. The Whooping Crane, Piping Plover, and the Interior Least Tern are birds using the flyway which have been classified as endangered and are protected under the Platte River Endangered Species Partnership.
Common plants in the Platte River area are Big and Little Bluestem, switch grass, and cottonwood trees. White-tail deer, many types of catfish, Canada geese, and bald eagles attract fans. The Platte River area has long supported many animals but recently, due to urbanization and farming causing loss of habitat, the numbers have declined. Canadian geese have adapted to the farm fields and scavenge a large part of their fare from unharvested grain; many have taken up residence at suburban office parks and stopped seasonal migrations.
Management and policy
The Platte River flowing through an arid part of the mid-west has been widely overused. Unfortunately, the claims on the Platte River water have exceeded the supply of water in drier years. The criteria for water over appropriation, according to the final reading of LB 962, is that if the river basin, sub basin, or reach is subject to an interstate cooperative agreement among three or more states and if, prior to such date, the department has declared a moratorium on the issuance of new surface water appropriations in such river basin, sub basin or reach and has requested each natural resource district with jurisdiction in the affected area in such river basin, sub basin or reach either to close or to continue in effect a previously adopted closure of all or part of such river basin, sub basin, or reach to the issuance of additional water well permits in accordance with subdivision. Most of the Platte River basin is currently considered as overappropriated.
Beginning in 2004, a number of Nebraska stakeholders embarked upon the Platte River Cooperative Hydrology Study (COHYST). Conducted with assistance from the United States Geological Survey and the Natural Resources Conservation Service, this study attempts to arrive at a better understanding of the geology and hydrology of the Platte River basin from the Colorado and Wyoming borders to Columbus, including the Loup basin. This improved understanding could be used to develop policies for management of the river system, both for human use and for the sake of the basin's endangered species. As of October 2009, the study is still ongoing.
In popular culture
In Centennial, James A. Michener's epic novel about the West from prehistoric to modern times, the second chapter is about the geological history of the Platte River tributary. The river as stopover for sandhill cranes plays an important part in Richard Powers' 2006 novel The Echo Maker.
The South Park episode "The Tooth Fairy Tale 2000" features Kenny being thrown into the Platte River with concrete shoes on.
- List of Nebraska rivers
- ^ a b c d e "Platte River". Geographic Names Information System, U.S. Geological Survey. http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:835915. Retrieved 2010-10-03.
- ^ a b "North Platte River". Geographic Names Information System, U.S. Geological Survey. http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:204647. Retrieved 2010-10-03.
- ^ "South Platte River". Geographic Names Information System, U.S. Geological Survey. http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:201759. Retrieved 2010-10-03.
- ^ "Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units". U.S. Geological Survey. http://water.usgs.gov/GIS/huc_name.html. Retrieved 2010-10-03.
- ^ "USGS Gage #06801000 on the Platte River near Louisville, Nebraska (Water-Data Report 2009)". National Water Information System. U.S. Geological Survey. 1953-present. http://wdr.water.usgs.gov/wy2009/pdfs/06805500.2009.pdf. Retrieved 2010-10-03.
- ^ South Platte Drainage  Accessed 28 Aug 2011
- ^ Colorado reservoirs  Accessed 25 Aug 2011
- ^ Map of Nebraska Rivers  Accessed 1 Sep 2011
- ^ "The National Map". U.S. Geological Survey. http://viewer.nationalmap.gov/viewer/. Retrieved Feb. 10, 2011.
- ^ Elkhorn Bridge collapse  Accessed 1 Sep 2011
- ^ "About the Lower Platte River Corridor Alliance". http://www.lowerplatte.org/about.html. Retrieved March 15, 2011.
- ^ Nebraska Rivers  Accessed 28 Aug 2011
- ^ "Villasur Sent to Nebraska", Nebraska Studies, accessed 24 August 2011
- ^ Mattes, Merrill J.' "The Great Platte River Road"; Bison Books; 1987; ISBN 978-0-8032-8153-0
- ^ Central Flyway  Accessed 28 Aug 2011
- ^ Platte Bird Species Accesssed 28 Aug 2011
- ^ Nebraska Department of Natural Resources, "Platte River Cooperative Hydrology Study (COHYST)", retrieved October 19, 2009.
- ^ Central Platte Natural Resources District, "Cooperative Hydrology Study (COHYST)", retrieved October 19, 2009.
- Bruce, B.W. and P.B. McMahon. (1998). Shallow ground-water quality of selected land-use/aquifer settings in the South Platte River Basin, Colorado and Nebraska, 1993-95 [U.S. Geological Survey Water-resources Investigations Report 97-4229]. Denver: U.S. Department of the Interior, U.S. Geological Survey.
- Condon, S.M. (2005). Geologic studies of the Platte River, south-central Nebraska and adjacent areas, geologic maps, subsurface study, and geologic history [U.S. Geological Survey Professional Paper 1706]. Reston, VA: U.S. Department of the Interior, U.S. Geological Survey.
- Dennehy, D.F. et al. (1998). Water quality in the South Platte River Basin, Colorado, Nebraska, and Wyoming, 1992-95 [U.S. Geological Survey Circular 1167]. Washington, D.C.: U.S. Department of the Interior, U.S. Geological Survey.
- Druliner, A.D., B.J. Esmoil, and J.M. Spears. (1999). Field screening of water quality, bottom sediment, and biota associated with irrigation drainage in the North Platte Project area, Nebraska and Wyoming, 1995 [U.S. Geological Survey Water-resources Investigations Report 98-4210]. Lincoln, NE: U.S. Department of the Interior, U.S. Geological Survey.
- Hardgree, M. (1995). A selected bibliography on the hydrology of the Platte River Basin in Nebraska through 1991 [U.S. Geological Survey Open-File Report 94-496]. Lincoln, NE: U.S. Department of the Interior, U.S. Geological Survey.
- Kimbrough, R.A. and D.W. Litke. (1998). Pesticides in surface water in agricultural and urban areas of the South Platte River Basin, from Denver, Colorado, to North Platte, Nebraska, 1993-94 [U.S. Geological Survey Water-resources Investigations Report 97-4230]. Denver: U.S. Department of the Interior, U.S. Geological Survey.
- Larson, L.R. (1985). Water quality of the North Platte River, east-central Wyoming [U.S. Geological Survey Water-resources Investigations Report 84-4172]. Cheyenne, WY: U.S. Department of the Interior, U.S. Geological Survey.
- Litke, D.W. (1996). Sources and loads of nutrients in the South Platte River, Colorado and Nebraska, 1994-95 [U.S. Geological Survey Water-resources Investigations Report 96-4029]. Denver: U.S. Department of the Interior, U.S. Geological Survey.
- Sprague, L.A. and A.I. Greve. (2003). Changes in nutrient and pesticide concentrations in urban and agricultural areas of the South Platte River Basin, Colorado, Wyoming, and Nebraska, 1994-2000 [U.S. Geological Survey Water-resources Investigations Report 02-4270]. Denver: U.S. Department of the Interior, U.S. Geological Survey.
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