The sedimentation crisis poses significant risks to water security, agriculture, and ecosystems. Over 2 billion people could face water shortages, and more than 25% of global irrigated farmland may be affected. The problem is particularly acute in arid regions, where nearly three-quarters of reservoirs are at risk. Sediment build-up also compromises dam safety and disrupts downstream ecosystems. Climate change is expected to exacerbate the issue by increasing rainfall and erosion rates, further accelerating sedimentation. Countries like Australia, with fragile soils and extensive land clearing, are especially vulnerable.