DUGAN CREEK. Dugan Creek rises three miles southwest of Oklaunion in north central Wilbarger County (at 34°06' N, 99°11' W) and runs northeast for ten miles, passing through Oklaunion before reaching its mouth on the Pease River, five miles northwest of Elliott and a mile south of the Oklahoma state line (at 34°11' N, 99°08' W). During the 1870s a spring located on the stream was known as Kilmartin or St. Andrews. It was once a substantial water source and an Indian campsite, but by the late 1970s it had diminished to a small seep. Dugan Creek traverses low to moderately rolling terrain. Its basin, which is composed largely of sand, supports sparse vegetation including grasses and nongrassy herbs.