MILLS BRANCH. Mills Branch rises on the northern edge of Odom Pond near the Montgomery county line in north Harris County (at 30°05' N, 95°12' W) and runs northeast for two miles, skirting a developed area, until reaching its mouth on White Oak Creek (at 30°06' N, 95°10' W). Mills Branch flows through terrain which is flat to rolling with local escarpments. Vegetation in the undeveloped area around the creek consists primarily of cultivated row or cover crops with occasional grasslands. Soils are deep fine sandy loams.