The document provides an overview of Australia's Murray-Darling Basin water management plan. It discusses challenges like overallocation and environmental degradation. It outlines the Commonwealth Water Act of 2007 that enabled the basin plan and established the Murray-Darling Basin Authority to develop the plan. The plan will set environmentally sustainable levels of water usage and aims to improve river health, water security, and economic and social outcomes through tools like purchasing water entitlements for the environment and improving water information. State water plans will need to comply with the basin plan requirements.