The late summer of 2021 brought devastating floods to New South Wales, Australia, marking the region\u2019s worst flooding in six decades. Persistent, heavy rain fell for several days, leading to widespread inundation and displacement. The scale of the disaster was immense, with the Australian Bureau of Meteorology reporting staggering rainfall totals. Areas around Sydney and in the Hunter and Mid North Coast regions were drenched with 400 to 600 millimeters (16 to 24 inches) of rain across just four days, with some areas experiencing almost a meter of rainfall.<\/p>\n\n\n\n
The impact was felt across numerous river systems. Water levels rose to major flood levels along the Clarence, Gwydir, Mehi, Lower Hunter, Manning, and Colo rivers, among others. The Hawkesbury-Nepean River system, which surrounds Sydney, saw its highest crests since 1961. The situation was compounded by the overflowing Warragamba Dam, which, as the BBC reported, discharged 500 gigalitres \u2013 equivalent to the volume of Sydney Harbour \u2013 into the already swollen river system. This, combined with natural choke points in the Hawkesbury-Nepean valley, created a \u201cbathtub effect,\u201d causing water to rapidly rise onto floodplains west of Sydney.<\/p>\n\n\n\n
The consequences were devastating. At least 40,000 people were evacuated across NSW, and tragically, lives were lost. Farmers suffered significant crop and livestock losses, impacting livelihoods and food security.<\/p>\n\n\n\n
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