What is the length of the River which has Wild Horse Creek as a tributary ?
Powder River (Wyoming and Montana) Powder River is a tributary of the Yellowstone River, approximately 375 mi long in northeastern Wyoming and southeastern Montana in the United States. It drains an area historically known as the Powder River Country on the high plains east of the Bighorn Mountains.
White Earth River (Minnesota) The White Earth River is a 26.2 mi tributary of the Wild Rice River of northwestern Minnesota in the United States. Via the Wild Rice River, the Red River of the North, Lake Winnipeg, and the Nelson River, it is part of the Hudson Bay watershed. It rises at the outlet of White Earth Lake and flows northwest through Mahnomen County, joining the Wild Rice River just east of the city of Mahnomen.