the intrusion of the railways into the waterfront in the 1850s to 1890s period started to crowd out recreational uses. in 1892, a legal agreement solidified the railways' usage of the waterfront. in 1893, a new plan was developed to extend landfill another south, and a new lake street (today's lake shore boulevard) established along the then-current waterfront edge. the problem of silting, and the increasing amount of sewage being dumped in the harbour, required ongoing dredging efforts. other works by the harbour trust including a breakwater at the don river and a breakwater at the queen's wharf to protect the entrance to the harbour.