MALLARD CREEK. Mallard Creek rises five miles south of Montague in east central Montague County (at 33°38' N, 97°38' W) and runs south for seven miles to its mouth on Dry Valley Creek, eight miles southeast of Montague (at 33°32' N, 97°40' W). The stream is dammed in its middle reaches ten miles southeast of Montague. Flat to rolling terrain in the area has local escarpments and shallow depressions and is surfaced by sandy and clay loams that support hardwood trees, conifers, brush, and grasses. The area has served as crop and range land.