The Diorsh Dam Station is located 50 kilometers southeast of Rasht city and 3 kilometers from Totakabon city on the Khorashak River (from the River Branches of Safidrood). Access to the dam via the Tehran -Rasht -Rasht -Rostam Abad - Totakabon - Khobashk village is possible.

The purpose of this dam for drinking water supply of Rostam Abad, Rudbar, Totakabon, Manjil, Lushan and 28 villages of Rouhan with 5.42 million cubic meters, supply of water needed for irrigation of 670 hectares of Khorrak Valley and Estekh About 5.13 million cubic meters, as well as the low environmental requirement of the dam is 2.49 million cubic meters and the total set of regulation is an average of 13.04 million cubic meters per year.