Abstract
One of the most important factors of urbanization is healthy water supplement. Tehran as a megacity suffers from not only overcrowding but also lack of water. Tehran water supplements are both groundwater and surface resources. Surface water resources are including Karaj, Lar, Latian, Taleghan Dams and Tehran-Karaj Plain is its groundwater resources. Therefore, Tehran-Karaj Plain is considered as a target area in this study. The target area is located between 51°05' and 51°10' longitude and 35°02' and 35° 57' latitude with approximately 2704Km2. The urban rivers are originated from the Alborz Mountains and received urban runoff, and secondary effluent of Tehran Wastewater Treatment Plants which ultimately collected in Bande Alikhan in the southern part of Tehran. The evaluation of Tehran water quantity by DPSIR Model is considered in this paper. Driving forces, Pressures and the Status of water quantity will represent and their impacts on the city will also investigate.
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