Complex sentence: He was Chief Engineer for the Waterworks Department 1857--1858, and responsible for the Torrens Gorge weir near Campbelltown which failed in July 1858, its first year of operation.
Split into simpler sentences: He was Chief Engineer for the Waterworks Department 1857--1858. The Torrens Gorge weir near Campbelltown failed in July 1858, its first year of operation.