GILLELAND CREEK. Gilleland Creek rises four miles northwest of Pflugerville in northern Travis County (at 30°28' N, 97°41' W) and runs southwest for twenty-seven miles to its mouth on the Colorado River, seven miles southeast of Austin (at 30°14' N, 97°32' W). The stream runs through Pfluger Park and Gilleland Creek Park in Pflugerville. The surrounding flat to rolling prairie is characterized by local steep slopes and clay and sandy loams that support oak, juniper, and pecan in the upper reaches of the creek and mesquite, cacti, and grasses in the lower reaches. The creek was named for James Gilleland, whose headright was located near the mouth.
Mary Starr Barkley, History of Travis County and Austin, 1839–1899 (Waco: Texian Press, 1963).