Originally known as the Shoshone Indian Reservation, the Wind River Indian Reservation was established by agreement of the United States with the Eastern Shoshone Nation at the
Fort Bridger Treaty Council of 1868, restricting the tribe from the formerly vast Shoshone territory of more than . A later settlement and land transaction after
United States v. Shoshone Tribe of Indians gave the Arapaho legal claim to the reservation, which was renamed the Wind River Indian Reservation. The Shoshone leader Washakie had a preference for the area, and had previously defeated the Crow in battle to hold the territory. As early as 1862, Indian Agent Luther Mann Jr. recommended creating a permanent reservation for the Shoshone. After prospectors discovered gold at
South Pass in 1867, the United States
Indian agent sought to limit numerous tribes from raiding mining camps by placing the Shoshone reservation in the Wind River Valley as a buffer. The United States hoped that tribes like the Crow, Blackfeet, Cheyenne, Lakota, and Arapaho would attack their traditional Shoshone enemies instead of the miners. However, the area was too dangerous for the Shoshone to occupy year-round, so Chief Washakie kept his people closer to
Fort Bridger for several years after 1868. Washakie's son was killed in a raid by enemy tribes, and the
Oglala Lakota leader Hump, a mentor of
Crazy Horse, was killed fighting the Shoshone in the Wind River Basin. Intertribal conflicts occurred several times in the 1860s and 1870s in the Wind River region. The Arapaho briefly stayed in the Wind River valley in 1870, but left after miners and Shoshones attacked and killed tribal members and
Black Bear, one of their leaders, as they moved lodges. At another event, a combined force of Lakotas, Cheyennes, and Arapahos surrounded and attacked Washakie's camp at Trout Creek on the reservation. The Shoshones survived the attack by digging rifle pits inside their tepees, and then mounting a counterattack. The last significant conflict occurred in June 1874, when 167 Shoshones and U.S. cavalry attacked the Arapaho at the
Bates Battlefield on the head of Nowood Creek in the
Bridger Mountains east of the Shoshone Indian Reservation. Camp Augur, a military post with troops named for General
Christopher C. Augur, was established at the present site of
Lander on June 28, 1869. (Augur was the general present at the signing of the Fort Bridger Treaty in 1868.) In 1870 the name of the camp was changed to Camp Brown, and in 1871, the post was moved to the current site of
Fort Washakie. The name was changed to honor United States ally and Shoshone
Chief Washakie in 1878. The fort continued to serve as a military post until the US abandoned it in 1909. By that time, a community had developed around the fort.
Sacagawea, a guide with the
Lewis and Clark Expedition of 1804–06, was later interred here. Her son
Jean Baptiste Charbonneau, who was a child on the expedition, has a memorial stone in Fort Washakie but was interred in
Danner, Oregon. A government school and hospital operated for many years east of Fort Washakie; Arapaho children were sent here to board during the school year. St. Michael's at
Ethete was constructed in 1917–1920. The village of
Arapahoe was originally established as a US sub-agency to distribute rations to the
Arapaho. At one time it also operated a large trading post.
Irrigation was constructed to support farming and ranching in the arid region. The Arapaho constructed a flour mill near Fort Washakie. The Riverton Reclamation Project and the city of
Riverton developed on some of this land. Instead of a lump-sum payment or upfront purchase, the cession required the United States to pay the tribes for each area of land settled upon. Seeing that large parts of the ceded area were never taken up by settlers, the ceded portion of the reservation was later restored to the Eastern Shoshone and Northern Arapaho tribes.
Arapaho settlement on Wind River In the winter of 1878–79, the United States Army escorted the Northern Arapaho to the
Sweetwater Valley near
Independence Rock and then temporarily placed them at the Shoshone's Fort Washakie Agency to receive rations. This decision to place the Arapaho in close proximity with their historic enemies the Shoshone has had significant historical and political consequences. , among the most influential Arapaho chiefs of his time. Chief Black Coal was able to largely keep the Arapaho at peace with the United States during the
Great Sioux War of 1876. He served as a U.S. Army scout and helped the tribe find a home on Wind River. The former Arapaho and Cheyenne reservation under the Fort Laramie Treaty of 1851 encompassing much of eastern
Colorado and southeast Wyoming had been overrun by whites after the
Colorado gold rush of 1859. The Northern Arapaho then signed the
Fort Laramie Treaty of 1868, giving them claim to locate in the
Great Sioux Reservation, encompassing the western half of present-day
South Dakota west of the Missouri River, and rights to hunt north of the Platte River in Wyoming so long as game remained. In practice the Arapaho did not wish to locate permanently at an agency shared by the Sioux. They were belittled by leaders of the more powerful Sioux including
Red Cloud, and wanted to avoid being culturally subsumed within the Lakota Nation. Instead, the Arapaho hoped for a reservation of their own. In 1868–69, the Arapaho briefly sought to locate with the linguistically related
Gros Ventres at the agency on the
Milk River in
Montana, but left after a
smallpox epidemic. Further, Arapaho priest and leader Weasel Bear had a vision that the Arapaho would find a permanent home closer to the Rocky Mountains, and not on the Great Plains. The Arapaho way of life had historically included significant use of mountain hunting grounds, especially in the Colorado Rockies around
Estes Park, but also including the
Snowy Range, the Bighorns, the
Black Hills, and the
Laramie Range. To seek favor of the Army, leaders
Chief Black Coal (Northern Arapaho), Sharp Nose and their followers allied with Gen.
George Crook as scouts against their former allies the Cheyenne, participating in the November 1876
Dull Knife Fight on the side of the United States, along with Shoshone, Cheyenne, Sioux, and
Pawnee scouts. Officers of the United States Army supported the idea of an Arapaho reservation in eastern
Wyoming Territory — General Crook may have promised an agency on the
Tongue River. Yet federal policy prevented this from coming to fruition, partly because the United States had essentially stopped negotiating reservation treaties with tribes after 1868, preferring instead to use
executive orders in such agreements. So, Army officers looked to Fort Washakie as the closest alternate agency for distributing rations, despite the fact that the Shoshone held treaty rights to decide what other tribes they were willing to admit to the reservation under the
Fort Bridger Treaty Council of 1868. Of the population in 2011, 3,737 were Shoshone and 8,177 were Arapaho. There were of tribal land with of wilderness area. In 2000, 6,728 (28.9%) were Native Americans (full or part) and of them 54% were Arapaho and 30% Shoshone. == Wildlife conservation ==