BLUNDELL CREEK. Blundell Creek rises three miles south of Mount Vernon in central Franklin County (at 33°08' N, 95°14' W). It originally ran southeast for fifteen miles to join Big Cypress Creek (at 33°04' N, 95°02' W) 3½ miles southeast of Monticello in Titus County. During the late 1960s the Dallas Power and Light Company constructed a dam across the creek near its mouth to form Lake Monticello. The stream, which is intermittent in its upper and middle reaches, crosses a gently undulating to rolling area with loamy topsoil. The land is heavily wooded, with pines and various hardwoods predominating.