This plan was developed within the framework of the consultancy service titled “Updating/Revising and Approving the Buir lake–Khalkh river basin management plan in alignment with climate change, risks, and vulnerability”, implemented under the “Improving Adaptive Capacity and Risk Management of Rural communities in Mongolia (ADAPT project)” (ADAPT Project) by the United Nations Development Programme (UNDP). In accordance with Vision 2050 and the New Recovery Policy, the Integrated Water Resources Management Plan for the Buir Lake–Khalkh River Basin will be implemented over a total of six years until 2030 in two phases: 2025–2027 and 2028–2030. The 5 main thematic areas of domestic water supply, agricultural water use, industrial water use, environmental water, and the institutional environment for basin water management include the 5 strategic objectives and 17 operational objectives that have been established within the framework of the basin's integrated water resources management plan. A preliminary estimate of the required budget and investment has been identified, along with a total of 33 measures and 97 actions to accomplish these goals.