The scale of the expansion construction is Orchard Hill Reservoir is a small (one) type reservoir with a total capacity of 9.25 million cubic meters. The reservoir is Shu Lu dry canal counter-regulation reservoir, with flood control, irrigation and other functions, but also my county Lucheng, Wanshan, Jinniu, Tangchi and other towns of drinking water source, drinking water for a total population of about 400,000 people, the average daily water consumption of more than 100,000 square meters. In order to solve the lack of capacity, improve the drinking water supply assurance rate, the plan is to expand the reservoir to a medium-sized reservoir, with a total capacity of about 15 million square meters.