Improving the identity of historic city by considering hydraulic infrastructure (the case study: Qazvin city)

Recently the importance of maintaining of historic identity of the cities is an obvious matter in restoration of a city. Each city depends on its cultural perception and its wealth, tries to reserve and repair its cultural heritage. This matter has been done in many cities in the world and many historic urban fabrics have been restored and rehabilitated to be visited by many tourists to enjoy their atmosphere and physical and spiritual features. Iran is a country with limited underground water but in spite of this fact there are many ancient civilization and old cities with valuable urban fabrics in them which have intellectual irrigation. The water of most cities of Iran mostly harvested from underground water by a technic which is called Qanat which irrigate city and farms. Water supplement in urban fabric and locating the hydraulic structure in cities had an important effect in forming the city which this impact shouldn’t be ignored in repairing or rehabilitation of urban fabric. In the other word hydraulic infrastructure of historic cities of Iran in hot and dry region is an important factor which shouldn’t forget during planning for rehabilitation. The route of water either underground route or surface water and also hydraulic structures which have been located in the path of water should be preserved. The case study is Qazvin city which its historic hydraulic infrastructure and hydraulic structures had an important effect in forming the city.