Prairie Island Indian Community

Prairie Island Indian Community (Dakota: Tinta Winta) is a Mdewakanton Sioux Indian reservation in Goodhue County, Minnesota, along the Mississippi River. Most of the reservation now lies within the city of Red Wing, which developed after this land was set aside.

The reservation was established in 1889, with boundaries modified after that time. The federally recognized tribe has lost much reservation land to the requirements of two major federal projects of the 20th century. The United States Army Corps of Engineers was authorized by Congress to construct Lock and Dam No. 3 along the river to improve navigation, and took over reservation land to support this. Later, the federal government authorized construction in 1973 of the Prairie Island Nuclear Power Plant nearby, taking more reservation land for this project.

The main reservation lies within the city of Red Wing. Off-reservation trust lands are located both within Red Wing and in Welch Township in northern Goodhue County, as well as in Ravenna Township in eastern Dakota County. These more than double the total landholdings of the tribe. According to the U.S. Census Bureau, the combined reservation and off-reservation trust land have a land area of 4.0 square miles (2,600 acres; 10 km²)^[1] The reservation had 310 residents in the 2020 census, including off-reservation trust lands.^[2] The tribe operates Treasure Island Resort & Casino on its land near the Mississippi River north of Red Wing.