These Rules are formulated according to the provisions of article 61 of the Law on the Prevention and Control of Water Pollution. Article 2 establishes the content of the unified plans based on river basins or regions, in line with Article 10 of the Law. Further provisions concern the supervision and management of the prevention and control of water pollution (a) when projecting the minimum discharge of a dam on large or medium-sized reservoirs; (b) with regard to the planning and adjustment of