Where does the high water in Sifangdong Reservoir come from?

Does the subject want to ask, "Where does the high water in Sifangjing Reservoir come from?" ? Surface water. Sifangjing Reservoir, also known as Sifangjing Water Control Project, is located at the downstream of the intersection of the main stream of Wentang River and the tributaries of Gong Xian in Yichun City, Yazhou, Pingtian Village, Hutian Town, Yuanzhou District, belonging to the main stream of Wentang River, a tributary of Yuanhe River in Ganjiang River Basin, 7 kilometers away from the urban area. The water of Sifangjing Reservoir comes from surface water, which refers to the general name of dynamic water and static water on the land surface, also known as "land water", including various liquid and solid water bodies, mainly rivers, lakes, swamps, glaciers and ice sheets.