Cataract Dam Dam The first dam built in the Upper Nepean Scheme, it provides water to the Macarthur and Illawarra regions, the Wollondilly Shire, and Sydney. Locate -34.265526928205, 150.80377001492 Milestone Constructed 1902 - 1907 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1902<\/span><span class='separator'> - <\/span><span class='date'>1907<\/span>"},"date_start":"1902","date_end":"1907"} Type Dam {"name":"Dam","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}