Big Muddy Badlands Big Muddy Badlands The Big Muddy Badlands are a series of badlands in southern Saskatchewan and northern Montana along Big Muddy Creek. They are found in the Big Muddy Valley, a cleft of erosion and sandstone along Big Muddy Creek. The valley is long, wide and deep. The valley was formed when it was part of an ancient glacial meltwater channel that carried great quantities of water southeastward during the last ice age. In the nineteenth and early twentieth century the Badlands formed the northern end of the "Outlaw Trail", a series of trails and stopping areas utilized by outlaws
Big Muddy Creek (Missouri River tributary) Fort Peck Indian Reservation. It joins the Missouri west of Culbertson. It was explored in 1805 by the Lewis and Clark Expedition, who called it Martha's River in their journals and noticed on their return voyage in 1806 that it had changed its mouth on the Missouri. Along with the Milk River and the Poplar River, it is one of three waterways in Canada that drain into the Gulf of Mexico. Big Muddy Creek has also been known as: Big Muddy River, Little Yellow River, Martha River, Martha's River, Marthas River, Marthy's River and Park River. Big Muddy Creek (Missouri