Youyang County is the Wuling mountainous terrain in central high, low east and west sides. The county to cover the mountains as a watershed dam hair, forming two major river systems; eastern shui River, Longtan River Yuanjiang River; west of the river, A Pengjiang etc. Wujiang River. Certain distance of the old gray footpath north of the county's highest point, elevation 1895 m; Dong Zhai is the lowest point of the western elevation of 263 meters. County undulating terrain, topography is divided into the mountains, altitude 800-1895 meters; low mountains, elevation 600-800 m; peaceful valley dam, elevation of 263-600 meters.