When floodwater reaches the sea, it can leave a 50-meter-thick layer of brown water, and cause real problems
Plumes of floodwater pushed far out to sea during the 2022 floods. This image shows the Hunter River on April 11 2022. Credit: NASA Earth Observatory, CC BY-ND
Over this wet summer, Melburnians and Sydneysiders have had to think twice about cooling off at their local beach. Heavy rainfall has swollen rivers and pumped pollutants, nutrients and murky fresh water far out to sea. Swimmers at Port Phillip Bay beaches are emerging…