Muma River
The Muma River is a right tributary of the Han River in the Yangtze river basin of northern China. It has a length of and a drainage area of. It originates in and flows entirely within Xixiang County of Shaanxi Province. The annual average flow is. It has a natural drop of and water reserves of 90,000 kilowatts. It arises near the border with Sichuan Province at, flows northwest and debouches into the Han River at.
The main branch of the Muma River is navigable by small boats as far south as the village of Matsung T'an.
