The largest of the dams in the Nahal Mamshit, still beautifully preserved, stands 35 feet high, almost 180 feet long and 25 feet thick at the top. Behind these dams, water accumulated to form pools as large as 13,000 cubic yards in volume, enough to fill 5 olympic-size swimming pools. The water collected from these pools could be stored in cisterns for use during the dry periods. Today, silt replaces water behind this dam.