(Most of Locks 10, 11 and 12 are under the water of Oliver Pool. Remains of the lock walls are at the old location of the Corps of Engineers, The location of Another Broken Egg and Manderson Park at the University)

ANNUAL REPORT OF THE SECRETARY OF WAR- 1908

(d) Locks 10, 11, and 12. — These locks and dams are near Tuscaloosa, Ala., and overcome the Tuscaloosa Falls with their combined lift of 29 feet. They were finished and opened to traffic in November, 1895, and on July 1, 1896, their operation and care became a charge under the general law of July 5, 1884. In addition to their operation and care, flood deposit has been dredged from lock chambers and approaches. Wells have been drilled at Locks 10 and 11, furnishing an abundant supply of good water. Necessary repairs to plant have been kept up at the Tuscaloosa shops, and four barges have been hauled out on the ways and thoroughly repaired. (e) Lock 13. — This lock is about 9 miles above Tuscaloosa. Contract work was completed and the lock turned over to the United States in May, 1905. On July 4, 1905, it was opened for traffic and its operation and care became a charge under the general law of July 5, 1884. Since that time two additional guide cribs have been built above the lock and the river bank below dam abutment thoroughly protected with rip-rap. During the past year in addition to opera ting and care of lock, fence has been built around reservation. Snags and obstructions have been removed from channel below lock. Lower approach to this lock has been widened and straightened by dredging. During the past year, in addition to work on locks, about 40 miles of river between Locks 9 and 10 were cleared of snags and other obstructions. A channel was dredged through Trussells bar, which had shoaled up badly during the high-water season. One new work barge was built and all material delivered for one more. Steamer Nugent and dredge boat repaired and painted. Quarterboat repaired. To June 30, 1908, the amount expended on this work was $315,693.76. The total expense during the year for operating, repairs, etc., for the seven locks was $55,974.58. The commerce passing through the locks during the fiscal year ending June 30, 1908, amounted to 1,496 tons coal, 202 tons cotton, 12,089 tons stone, 110 tons fertilizer, 5,634 tons logs, 785 tons lumber, and 350 tons of general merchandise. In addition to the commerce passing through the locks there is some coal traffic in the pool between Locks 12 and 13 and a considerable traffic in logs in the pool between Locks 7 and 8. No accurate record of this traffic is available.