In 1962, for the Yodo-gawa River System, the 'Yodo-gawa River System Water Resources Development Basic Plan' was created based on the 'Water Resources Development Promotion Law' in order to cope with pressing water demands due to the growing population in the Kansai region.
その後洪水調節に加え関西圏の人口増加に伴う水需要の逼迫に対応する為、1962年（昭和37年）に淀川水系は「水資源開発促進法」に基づく「淀川水系水資源開発基本計画」が策定された。