Blackwater event happen when a lot leaf litter and other carbon from floodplains is washed into rivers during big flood events. When floods become less regular, the healthy balance is lost – too much carbon builds up and blackwater events become dangerous.
More frequent overbank flood events would reduce the instance of blackwater events. In recent decades the over allocation of water licences and a sharp increase in floodplain harvesting has created a perfect storm for the Darling-Baaka.
Following is a comprehensive update from the NSW Government on the event currently impacting the river.