Abstract
Qanat is the oldest system of water harvesting. This system is able to transfer groundwater to dry lands in the most sustainable way to build up the cities. Building a Qanat has a simple technique and several elements make it which include a main well (mother well), a corridor, some serial wells and finally a stream on the ground floor (Mazhar). However we can notice a special civilization which we can call it “Qanat civilization” because Qanat is the main factor to flourish and develop the settlements, agriculture, cities and so on. Here we survey a case study: Naragh city. It is historic city with a rich civilization which is located nearly in the center of Iran. This city was irrigated by Qanats too and there were several hydraulic structures such as watermills, Payabs , water reservoir , washhouse and so on. The quotable water of the city was supplied by Haj allah dad Qanat . This Qanat was rehabilitated by the municipality of Naragh 15 years ago. This paper mainly describes the traditional water harvesting and water supplement in Naragh and hydraulic structures which work with this water. At the end I want to refer to the advantages and features of traditional harvesting and supplement of water in Iran which indeed are sustainable ways to harvesting and supplement of water and planner should learn and gain them. Water crises is near and thinking about it is necessary.
