The big dry

摘要

The mouth of the Murray-Darling river sets an idyllic scene. Anglers in wide-brimmed sunhats wade waist-deep into the azure water. Pleasure boats cruise languidly around the sandbanks that dot the narrow channel leading to the Southern Ocean. Pensioners stroll along the beach. But over the cries of the seagulls and the rush of the waves, there is another sound: the mechanical drone from a dredging vessel. It never stops and must run around the clock to prevent the river mouth from silting up. Although the Murray-Darling is Australia's longest river system, draining a basin the size of France and Spain combined, it no longer carries enough water to carve its own path to the sea.