And from Wikipedia:
Indian reservations in Nebraska.[23]
Reservation name Tribe Established Size History Notes
Niobrara Reservation Santee Sioux 1863 41,000 acres (17,000 ha) Established by Act of March 3, 1863 (12
Stat. 819); treaty of April 29, 1868 (15
Stat. 637); Executive orders, February 27, 1866, November 16, 1867, August 31, 1869, December 31, 1873, and February 9, 1885. 32,875.75 acres (133.0434 km2) were selected as homesteads, 38,908.01 acres (157.4551 km2) as allotments, find 1,130.70 acres (4.5758 km2) for
Indian agency,
school, and
mission purposes; unratified agreement of October 17, 1882. The tribal offices are located in
Niobrara, with reservation lands in
Knox County.
[24]
Omaha Reservation Omaha 1854 12,421 acres (5,027 ha) Established by Treaty of March 16, 1854 (10
Stat. 1043); selection by Indians with the President's approval, May 11, 1855; treaty of March 6, 1865 (14
Stat. 667); act of June 10, 1872 (17
Stat. 391); act of June 22, 1874 (18
Stat. 170); deed to the Winnebago, dated July 31, 1874: act of August 7, 1882 (22
Stat. 341): act of March 3, 1893 (27
Stat. 612); 129,470 acres (523.9 km2) allotted to 1,577 Indians; the residue, 12,421 acres (50.27 km2), unallotted. The reservation is located mostly in Thurston County, with sections in
Cuming County and
Burt County.
[25] The tribal council offices are in
Macy,
[26] with the towns of
Rosalie,
Thurston,
Pender and
Walthill located in reservation boundaries.
Ponca Reservation Ponca 1858 27,500 acres (11,100 ha) Established by Treaty of March 12, 1858 (12
Stat. 997), and supplemental treaty March 10, 1865 (14
Stat. 675); act of March 2, 1899 (25
Stat. 892). 27,202.08 acres (110.0829 km2) were allotted to 167 Indians, and 160 acres (0.65 km2) reserved and occupied by agency and school buildings. The tribal council offices are located in Niobrara.
[27] This is also the location of the historic
Ponca Fort called Nanza.
Sac and Fox Reservation Sac and Fox 15,129 acres (6,122 ha) Located in southeastern
Richardson County, Nebraska and northeastern
Brown County, Kansas
Winnebago Reservation Winnebago 1863 1,711 acres (692 ha) Established by Act of February 21, 1863 (12
Stat. 658): treaty of March 8, 1865 (14
Stat. 671): act of June 22, 1874 (18
Stat. 170); deed from the Omaha, dated July 31, 1874 (Indian Deeds, VI, 215). 106,040.82 acres (429.1320 km2) were allotted to 1,200 Indians; 480 acres (1.9 km2) reserved for agency, etc.; the residue, 1,710.80 acres (6.9234 km2), unallotted. The tribal council offices are located in the town of
Winnebago.
[28] The city of
Emerson, south of First Street, as well as
Thurston, is located on the reservation, as well. The reservation occupies northern Thurston County, Nebraska, as well as southeastern
Dixon County and
Woodbury County, Iowa, and a small plot of off-reservation land of southern
Craig Township in
Burt County, Nebraska.