Moose Mountain Creek is a stream flowing through southern Saskatchewan, Canada, situated in the Moose Mountain Upland region. The creek serves a dual role as both the primary inflow and outflow of Moose Mountain Lake, a reservoir created in 1937 by the damming of the creek. The creek enters Moose Mountain Lake at the north end and exits at the dam on the south end, making it a dam-influenced waterway with tailwater characteristics below the reservoir. The surrounding landscape is part of the Prairies Ecozone within Palliser's Triangle, giving the creek a distinctly prairie character with the elevated terrain of the Moose Mountain Upland shaping its valley and flow patterns.