Lake Randell is in the Red River basin three miles northwest of Denison and one mile south of Lake Texoma in extreme north central Grayson County (at 33°48' N, 96°35' W). The reservoir, owned by the city of Denison, was built in 1909 and impounds the waters of Shawnee Creek. The reservoir has a capacity of 5,400 acre-feet and a surface area of 172 acres. It is at an elevation of 640 feet above mean sea level, and the drainage area above the dam is eleven square miles. This area, however, does not produce enough runoff to allow the lake to meet the water supply needs of Denison. Since July 1962, therefore, water has been pumped into the lake from Lake Texoma.