Big Muddy Creek (Missouri River tributary) Big Muddy Creek (Missouri River tributary) Big Muddy Creek is a tributary of the Missouri River, approximately 191 mi (307 km) long, in the Canadian province of Saskatchewan and the U.S. state of Montana. It flows through the Big Muddy Badlands. It rises in southern Saskatchewan at Willow Bunch Lake, on the plains north of the international border and approximately 20 mi (32 km) northwest of Big Beaver. It flows southeast through the Big Muddy Badlands and through Big Muddy Lake, then south into Sheridan County, Montana, past Redstone, then east, past Plentywood, then south, forming the eastern border of
Muddy River (Nevada) By 1855 it had become a cold season freight route between Utah and Southern California that remained in use in Southern Nevada into the 20th century. Mormon settlers established several settlements in the Muddy River area in 1864, including the town of St. Thomas, which by 1938 was submerged under Lake Mead until recently. Some of the towns ruins can be still seen during low water levels. Some Paiutes fought to protect and reclaim their homeland. For a variety of reasons, including the harsh climate, unpredictable periods of drought, and a tax dispute with the State of Nevada, the Mormons