Tehran Province relies on surrounding rivers, dams, and artificial lakes for its water supply and recreational activities.
* **Rivers:** The Jajrood River flows through the east of the province, providing critical water resources and feeding the Latyan Dam. * **Lakes & Reservoirs:** * **Latyan Dam:** A major reservoir northeast of Tehran, popular for weekend getaways and fishing. * **Tar Lake:** A stunning, high-altitude tectonic lake located near Damavand, ideal for camping and trout fishing. * **Chitgar Lake (Lake of the Martyrs of the Persian Gulf):** A large, artificial lake in western Tehran built to improve air quality and provide a massive recreational waterfront for city residents.
