City of David
22 ביוני 2026
This is the largest dam ever discovered in Israel and the earliest one ever found in Jerusalem. Its dimensions are remarkable: about 12 meters high, over 8 meters wide, and the uncovered length reaches 21 meters – continuing beyond the limits of the current excavation,” the directors stated. “The dam was designed to collect waters from the Gihon Spring as well as floodwaters flowing down the main valley of ancient Jerusalem (the historical Tyropoeon Valley) to the Kidron Stream, providing a dual solution for both water shortages and flash floods.”
A monumental dam excavated in the Siloam Pool in the City of David has now been dated in a joint study by the Israel Antiquities Authority and the Weizmann Institute of Science, to the reign of the kings of Judah, Joash or Amaziah. Its construction may have been a creative solution to climate crisis , about 2,800 years ago, according to the researchers. The research, published Monday in the prestigious scientific journal PNAS, will be presented at the upcoming “City of David Studies” conference in early September.