Australia’s water resources require effective management on both large and small scales. Water management can involve managing water supply, whether it comes from rivers, dams, groundwater or sources like desalination, and the allocations of water for different uses. However, this is not the only facet of water management. Water management also includes the effective removal of unwanted water, such as excessive stormwater runoff, to prevent flooding and other undesirable consequences. On a smaller scale, water must be managed on mining and construction sites, often requiring dewatering. The release of wastewater, treated or untreated, back into the environment also requires the careful management of environmental considerations.