A 1:80-scale hydraulic model was used to study flow conditions in the canal downstream of the proposed Bay Springs Lock. The original design and plan of operation caused severe conditions in the canal and required modification (design 2) of the lock discharge system and lower approach geometry. Based on the results of this study, the design 2 diffuser and lower approach with a 2-min emptying valve schedule should provide satisfactory navigation conditions downstream of the project. This design is expected to produce a relatively slow upwelling of the water surface in the lower approach with a maximum height of 2.5 ft and to exert a force of less than 36 tons on a tow similar to that used in the study. (Author).

The largest, most costly domestic public works project ever undertaken by the Army Corps of Engineers, the Tenn-Tom's 234 miles, five dams, and ten locks entailed the movement of more earth than was required to dig the Panama Canal. In a monumental history of the nation's largest navigation project, Jeffrey K. Stine records the struggle between the interests determined to build the waterway and the forces pitted against its completion. Based on extensive research, Mixing the Waters explores the intersection of environmental history, the history of technology, and U.S. political history. It chronicles the profound changes introduced by the environmental movement and addresses the importance of changing societal values, an issue at the heart of understanding the evolving relationship between technology and the environment.

This report describes a data base which contains descriptions of navigation lock studies conducted by the Corps of Engineers during 1937-1984. The data base identifies measured quantities, lock features, and a complete bibliography of reports. Data base maintenance and management are automated by means of computer software.