Here is a recent article I found from http://www.biblicalarchaeology.org

According to the article “The Israel Antiquities Authority (IAA) and Jerusalem archaeologist Eli Shukron announced the discovery of a large First Temple period reservoir” on 09/06/2012.

This discovery will improve our understanding of the 1st Temple period in Jerusalem.

http://www.biblicalarchaeology.org/daily/news/ancient-reservoir-provided-water-for-first-temple-period-jerusalem/