Khanbandi dam is situated in the Zarafshan river basin. 8 channels with 680 dams were built at the X—XIII centuries in Samarkand area and only 4 dame of such scale preserved. The dam of Khanbandi was built at Oslan in Pasttaga gorge. Upper length is 57.75m., lower is 24.35m., altitude is 15.25m. It constructed from cut granite slabs based on water—resistant solution. 9 cone—shaped holes which made in different altitudes were regulating the water flow. The basis of the dam is 4 times thicker than the top. The length of the created reservoir is 1.5 km., the width is 52 m. near the dam and 200m. near the gorge.