Shaodong County belongs to the hilly area of ??central Hunan and is a landform of dissolution and erosion. Hilly land accounts for 61.18% of the county's total area, mountains account for 21.69%, and plains are mostly valley plains, accounting for only 10.85%. The terrain rises from the north to the south and tilts towards the middle, and the central part rises and tilts towards the east and west in a step-like manner, becoming the branch of the three major water systems in the territory: Shaodong Yinjiatang Ridge. Shaodong County is located in the transition zone between the Xuefeng Mountains and the Nanling Mountains. The territory is dotted with hills and valleys, accompanied by low hills, small plains and several small basins. The terrain consists of rising mountains in the north and south, and the central part rises and tilts to the east and west. There are three major surface water systems in Shaodong County: Shaoshui, Zhanshui and Zhishui. Zhanshui and Zhishui flow into the Xiangjiang River in the east, and Shaoshui flows into the Zijiang River in the west. The total annual runoff averages 2.487 billion cubic meters. Shaoshui River originates from the south of the northwest foot of Huilong Peak in Shuangfeng Township, Shaodong County. It passes through Zhouguan Bridge, Liangshitang, Niumasi and Yunshuipu Township, and then flows into Zijiang River from the right bank along the river bridge in Shaoyang City. The total length is 112 kilometers, the drainage area is 1965 square kilometers, and the average slope of the river is 0.79‰. Its larger tributaries include Rubujiang River, Xiyangjiang River and Tanjiang River. The Roujiang River originates from Youjiaping, Shaoyang County, passes through Shanmuqiao, Huangjiaba Reservoir and Xianrouqiao Township, Shaodong County, and merges into Shaoshui River from the left bank at Xiaojia Village. The Xiyang River originates from Yueping Peak in Xinshao County, passes through Taizhi Temple, Tanfu, Chenjiafang Township, and Fanjiashan Town in Shaodong County, and merges into Shaoshui River from the right bank at Niumasi. Tanjiang originates from the southern foot of Jianmuling in Dong'an County, enters the city at Jiepai Bridge in Wufengpu Town, Shaoyang County, passes through Wufengpu, Zhonghe, Xiahuaqiao, Guzhou Township, Tanjiang Township on the outskirts of the city, and merges into Shao from the left bank at Shuangjiangkou water. The specific location of the source of steamed water is Zhengyuan Village, Jianjialong Township, Shaodong County. It flows through Jianjialong Township, Yejiping Township, Lingguandian Town, Shetianqiao Town, Shuidongjiang Town, Hengyang Jinlan Town, Hengyang County, Daiyingling Town, and finally merges into the Xiangjiang River.