Sydney's main water source, Warragamba Dam, has spilled over for the first time since 2016, as rivers in Australia's largest city swell amid a downpour. Authorities are particularly worried about the situation in the nearby Hawkesbury-Nepean valley, which the NSW State Emergency Service says has one of Australia's highest flood-danger levels. "WaterNSW has established a dedicated 24-hour incident management team …
After months of drought, the Nepean Dam has spilled over after more than 700mm of rain drenched parts of the region across the past week. Last week Sydney's metropolitan dam systems were at 43 per cent capacity, but after 244mm of rain fell into the Warragamba catchment, the system is now at 75 per cent capacity. Despite the heavy rainfall …