water reservoirs are one of the most important architectural phenomena designed to store water. They have a very high position in Iranian culture and civilization as buildings which benefit the public. The science and art of reservoir construction was very complex and the architects always paid special attention to very important issues such as the amount of water pressure on the walls and bottom, ventilation, purification, and prevention of water pollution, etc. Water storage through the construction of reservoirs in Tabas was one of the oldest methods, through which water was usually accumulated in reservoirs during winter and cold weather. Historical evidence shows that there were more than 38 reservoirs and howzes in the old part of Tabas in the past, some of which were destroyed over time and some were used even after the Tabas earthquake. Tabas reservoirs date back to the Safavid, Qajar and Pahlavi periods.
The Geosite of Zainul Abedin Attar Water Reservoir belongs to the Qajar period, that was built and endowed by Zein al-Abedin Attar and has been registered in the list of national monuments of Iran under registration number of 14536. The volume capacity of this reservoir is 100 m3 and it has 40 stairs. Other famous Tabas reservoirs include the Pahn Kucheh, Paeen Mahaleh, Bazaar, Torabzadeh, and Najd reserviors, and so on.
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