Mile: 134.06, 10-Aug-98
Guard Lock No. 6. Dam No. 6 was completed in April, 1839; made of wood filled with rocks. The dam was damaged by floods in 1877, 1886, 1889, 1936, and 1942. It also burned in 1936. From 1842 to 1850, this was the head of the canal, as the final fifty miles had not been completed.