increased population in Tehran has raised air pollution to well above international standards while 70 percent of winds blowing in the city are useless in reducing air pollution. Seasonal winds blowing from west to east can provide good grounds for development of green spaces in west Tehran.
Chitgar Park has an area of about 950 hectares and has been a recreational center since a long time ago. Its lake has an area of about 160 hectares with capacity to hold 10 million cu. m. of water, which not only feeds groundwater, but also purifies Tehran air.
The combination of Chitgar Park and lake is very effective in reducing air pollution in Tehran. The lake is bound to Kan and Vardavard basin in north, to Kan basin in east, to Vardavard basin in west, and to Tehran – Karaj freeway in south. Its construction started in October 2010 and has progressed 7 percent.