Yarkand River
Poskam County (Posgam, ), also Zepu County () is a county in Kashgar Prefecture, Xinjiang Uyghur Autonomous Region, China. The county is located on the southern bank of the Yarkand River, also known as the Zarafshān River (). Poskam County is bordered to the north and west across the Yarkand River by Yarkant County (Shache) and to the south and east by Kargilik County (Yecheng).