The Sweetwater River is a long tributary of the

North Platte River The North Platte River is a major tributary of the Platte River and is approximately long, counting its many curves.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed March 21, 2011 In a ...

,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
accessed March 21, 2011 in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Wyoming Wyoming () is a U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the south ...

. As a part of the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...

system, its waters eventually reach the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...

Course

The Sweetwater rises in southwestern Fremont County, at the continental divide near South Pass Wyoming, on the southern end of the

Wind River Range The Wind River Range (or "Winds" for short) is a mountain range of the Rocky Mountains in western Wyoming in the United States. The range runs roughly NW–SE for approximately . The Continental Divide follows the crest of the range and inclu ...

. It flows ENE along the north side of the Antelope Hills, then ESE, through Fremont County, past Jeffrey City, between the Granite Mountains to the north and the Green Mountains (Wyoming) to the south, through what are now cattle-raising areas. In southern

Natrona County Natrona County is a county in the U.S. state of Wyoming. As of the 2020 United States Census, the population was 79,955, making it the second-most populous county in Wyoming. Its county seat is Casper. Natrona County comprises the Casper, WY ...

, it passes Devil's Gate and Independence Rock along the

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and

Mormon Trail The Mormon Trail is the long route from Illinois to Utah that members of the Church of Jesus Christ of Latter-day Saints traveled for 3 months. Today, the Mormon Trail is a part of the United States National Trails System, known as the Mormon ...

s, and empties into the North Platte as the Sweetwater arm of

Pathfinder Reservoir Pathfinder Reservoir is located in the U.S. state of Wyoming on the North Platte River between Casper and Rawlins. It sits 47 miles (76 km) southwest of Casper, in Carbon County and Natrona County. The reservoir was created by Pathfinder Da ...

History

The Sweetwater River valley provided a route used by

fur trappers The fur trade is a worldwide industry dealing in the acquisition and sale of animal fur. Since the establishment of a world fur market in the early modern period, furs of boreal, polar and cold temperate mammalian animals have been the most ...

mountain men A mountain man is an explorer who lives in the wilderness. Mountain men were most common in the North American Rocky Mountains from about 1810 through to the 1880s (with a peak population in the early 1840s). They were instrumental in opening up ...

and

fur traders The fur trade is a worldwide industry dealing in the acquisition and sale of animal fur. Since the establishment of a world fur market in the early modern period, furs of boreal, polar and cold temperate mammalian animals have been the mo ...

as they went to their annual summertime

Rocky Mountain Rendezvous The Rocky Mountain Rendezvous was an annual rendezvous, held between 1825 to 1840 at various locations, organized by a fur trading company at which trappers and mountain men sold their furs and hides and replenished their supplies. The fur compan ...

located usually somewhere along the

Green River Green River may refer to: Rivers Canada * Green River (British Columbia), a tributary of the Lillooet River *Green River, a tributary of the Saint John River, also known by its French name of Rivière Verte *Green River (Ontario), a tributary of ...

Wyoming. These trappers and traders soon established a path for their pack trains along the Sweetwater and eventually cleared a rough wagon trail to the Green River. In fall of 1823, trappers and fur traders

Jedediah Smith Jedediah Strong Smith (January 6, 1799 – May 27, 1831) was an American clerk, transcontinental pioneer, frontiersman, hunter, trapper, author, cartographer, mountain man and explorer of the Rocky Mountains, the Western United States, and ...

and Thomas Fitzpatrick led their trapping crew south from the

Yellowstone River The Yellowstone River is a tributary of the Missouri River, approximately long, in the Western United States. Considered the principal tributary of upper Missouri, via its own tributaries it drains an area with headwaters across the mountains an ...

to the Sweetwater River. They were looking for a safe location to spend the winter. Smith reasoned since the Sweetwater flowed east it must eventually run into the Missouri River. Trying to transport their extensive fur collection down the Sweetwater and North Platte River, they found after a near disastrous canoe crash that the rivers in Wyoming were too swift and rough for water passage. On July 4, 1824, they cached their furs under a dome of rock they named Independence Rock and started their long trek on foot to the Missouri River via the Sweetwater, North Platte and

Platte River The Platte River () is a major river in the State of Nebraska. It is about long; measured to its farthest source via its tributary, the North Platte River, it flows for over . The Platte River is a tributary of the Missouri River, which itself ...

valleys. Upon arriving back in a settled area on the Missouri River they bought pack horses (on credit) and retrieved their furs. They had re-discovered the route that Robert Stuart of the

Astor Expedition The Pacific Fur Company (PFC) was an American fur trade venture wholly owned and funded by John Jacob Astor that functioned from 1810 to 1813. It was based in the Pacific Northwest, an area contested over the decades between the United Kingdom o ...

had taken in 1813—eleven years before. Thomas Fitzpatrick was often hired as a trail guide when the fur trade almost ceased in 1840. Jedediah Smith was killed by Indians about 1831. By 1843 the Sweetwater River valley was a regular wagon trail providing the water, grass and fuel needed on the Oregon, California and Mormon Trails across Wyoming. The Sweetwater provided an almost direct path from the Platte and North Platte Rivers to the wide South Pass

Continental Divide A continental divide is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not ...

between the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

rivers and

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

rivers. South Pass was the easiest pass across the Atlantic and Pacific drainages. These wagon trails crossed the meandering Sweetwater River about nine times on their about 10 to 20 day trips along the Sweetwater River before they reached South Pass. The Sweetwater River's connection to the California Trail is of particular interest to members of the Fraternity of

Phi Gamma Delta Phi Gamma Delta (), commonly known as Fiji, is a social fraternity with more than 144 active chapters and 10 colonies across the United States and Canada. It was founded at Jefferson College, Pennsylvania, in 1848. Along with Phi Kappa Psi, Phi ...

, since it is a site where two early members met, including one of the fraternity's six founders. At a time when such a meeting was incredibly unlikely, the coincidence was so fortuitous as to be chronicled in the fraternity's history.

References

{{authority control Rivers of Wyoming Bodies of water of Natrona County, Wyoming Bodies of water of Fremont County, Wyoming Tributaries of the North Platte River

Course

History

See also

References