Working in the depths of the earth -2 Dec 5, 2020 Although there were large amount of rainfall in recent days, there have been no reports of flooding in Tehran. Since , the efforts of municipal services workers in Tehran Municipality who have continuously dredged nearly 530 km of canals. Moreover, Tehran capillary streams are also fully monitored and cleaned once every 24 hours. Hamidreza Hasanpour https://www.tehranpicture.ir/u/iu2