This paper analyzes the process how the government sanction had been obtained to the plan on the First Lake Biwa Drainage Project. The conclusions are as follows, 1) Distinguished officials in Meiji Government agreed to this plan, because they had pursued the modernization of the town and country to build up the national power. 2) Public Works Bureau in the Ministry of National Affairs under the influence of Chosyu Group, approved this plan in 1885, after driving away the jurisdiction of the Ministry of Agriculture and Commerce under the influence of Satsuma Group. 3) Kyoto Prefecture had arranged the reasonable plan, the financial estimate and resources for this project upon which Meiji Government was able to step into the agreement on the sanction.
