Five people. According to the relevant information of public institutions, the Water Conservancy Bureau ranks fifth among all the bureaus. The Water Conservancy Bureau is the Water Affairs Bureau and the water administrative department of the government, mainly engaged in water conservancy project construction management, water resources management, water supply and drainage, engineering construction, river and lake management and protection. The main responsibility of the Water Conservancy Bureau is to manage the development, utilization, conservation, protection and management of water resources and the prevention and control of water disasters within its scope of responsibility.