What is the length of the River which has Wild Horse Creek as a tributary ?
Wild Horse Creek (Wyoming) Wild Horse Creek is a tributary of the Powder River in Wyoming. The USGS has a station on the creek, near Arvada.
Simpson Creek (West Virginia) Simpson Creek is a tributary of the West Fork River, 28 mi long, in north-central West Virginia, USA. The stream was named for hunter and trapper John Simpson, who left his name on it ("Simpson's Creek") after building and living in a cabin there for several months in 1763 and '64.