2019 Cheyenne River Sioux Tribe Pow Wow, Fair and Rodeo The Cheyenne River Sioux Tribe Pow Wow, Fair and Rodeo will be held on August 30 - September 2, 20198 at the Pow Wow Grounds in North Eagle Butte, SD. The Eagle Butte Rodeo is held at Cheyenne River Sioux Tribe Arena. The Cheyenne River [read more]