Low Water Records for North Texas Lakes at Whitney Lake (1) 509.52 ft on 11/01/1956 (2) 511.51 ft on 04/21/1966 (3) 511.64 ft on 09/15/1964 (4) 512.92 ft on 08/14/1972 (5) 516.66 ft on 12/03/2011 (6) 520.34 ft on 08/03/1978 (7) 523.58 ft on 12/27/2006