 The waterfall and creek were called Moul starting in the 1930s, referring to George William Moul, a nearby homesteader from 1915 to 1918.In the 1980s, locals gradually reverted to using the Grouse Creek name, even though "Moul Creek" appeared on all the maps.The Ministry of Highways erected a "Grouse Creek" sign on the Clearwater Valley Road bridge in 1990 which confused travellers even more.