1847 Chapter 249 Commissioners to rebuild locks when necessary. May 1, Eleven locks completed and brought into use. 1848 May 8, All locks completed and brought into use. 1849 Chapter 218 Seneca lake lock to be rebuilt of stone. 1851 Pier at Dresden completed.
Contracts let to keep canal in repair for five years.
1859 Chapter 449 Appropriation for improving the upper level of canal. 1861 Bridges and retaining wall at Penn Yan completed. July, Canal badly damaged by severe storm. 1864 Penn Yan level lowered to conform to guard-lock. 1870 Chapter 767 Appropriation for improvement at Penn Yan.