Table 1: Reservoir siltation in the Broken Hill region (northeast area of New South Wales, Australia) Dam Year of completion Catchment area km2 Original reservoir capacity m3 Cumulative siltation volume m3 Date of record (1) (2) (3) (4) (5) (6) Corona dam ~1890 15 120,000* 120,000 fully-silted 1910? Stephens Creek dam 1892 510 24.3M 4.5M 1958 de-silting F 1971 Umberumberka dam 1915 420 13.2M 3.6M 1941 4.5M 1961 5M 1964 5.7M 1982 * = Fully-silted nowadays F = Extensive desilting in 1971