Human Impacts on the Murray-Darling River: Water Overuse, Pollution, and Climate Change

Major Human Impacts

1. Over-extraction for Irrigation: Reduces flow, destroys wetlands, kills native fish and vegetation; river can cease flowing in dry years.
2. Land Clearing: Agriculture and urban development increase erosion, sedimentation, nutrient enrichment, degrading water quality and habitat.
3. Pollution: Agricultural runoff, sewage, industrial discharge contaminate water, accumulate toxins, reduce biodiversity.
4. Climate Change: Rising temperatures, altered rainfall, extreme events reduce water availability, increase evaporation, worsen droughts.