Project objectives:

Supply of potable water to domestic consumers of Gilan province, including Rasht, Khoshkbijar, Kuchesfahan, Khomem, Lasht-e-Nasha, Sangar, Astaneh Ashrafieh, Kiamehr, Lahijan, Siahkal, Langrud, Bandar Anzali. The volume of supplied water is around 165 million cubic meters per year.

Supply of irrigation water for 150 hectares of agricultural lands

Generating of 6.3 MW electric power.

Project components:

• Dam body
• Coffer dam
• Spillway
• Diversion tunnel and bottom outlet
• power plant

Project Description:

Shahr Bijar Reservoir Dam was constructed on Zilaki and Doaban rivers,35 km far from Rasht. This river  is one of the branches of Sefidrood. Drainage basin of Zilaki is about 242 km² and its average annual discharge is 202 mcm.

Dam characteristics:

• Type: concrete face rockfill dam (CFRD)
• Crest elevation: 219.5 m.a.s.l
• The width of the crest: 10 meters
• The width of the Dam heel: 377 meters
• The height of the from the foundation: 94.5 meters
• Total volume of embankment of dam body: 3955100 cubic meters
• Diversion system: coffer dam and tunnel.
• Spillway type: free flow ungated spillway
• Reservoir capacity: 105 mcm

Behan Sadd’s scope of works :

Project management during the construction phase