Overview
The Sardasht Dam is an operational hydroelectric powerplant located in the West Azerbaijan province of Iran. This infrastructure project is situated on the Little Zab river, positioned 13 km southeast of the town of Sardasht. The facility functions as a critical component of the regional energy grid, utilizing water as its primary fuel source to generate electricity. As an embankment dam, it represents a significant engineering undertaking in the Iranian hydroelectric sector, combining water retention capabilities with power generation efficiency.
The dam structure itself is a rock-fill earth core design, standing 116 m tall and extending 275 m in length. These dimensions allow for substantial reservoir capacity, which is essential for the consistent operation of the attached hydroelectric power station. The installed capacity of the power station is 150 MW, contributing to the local and national energy supply. The expected annual generation from this facility is 482 GWh, providing a steady output of renewable energy to the region. The operational status of the dam is currently active, having been commissioned in 2017.
Reconnaissance studies for the Sardasht Dam were completed in 1999 by the Moshanir Consulting Engineers Company, marking the initial phase of the project's development. The construction contract for the dam was awarded in 2009, initiating the formal building process. Official construction on the dam began in 2011, following the preliminary planning and contracting phases. A significant milestone was reached in November 2012 when the river diversion tunnels were completed. This event was marked by a ceremony attended by Majid Namjoo from Iran's Ministry of Energy, highlighting the project's importance to national energy infrastructure.
The dam began to impound its reservoir on 22 June 2017, signaling the transition from construction to operational status. This date marks the beginning of the reservoir's ability to hold water effectively, which is crucial for both hydroelectric generation and potential downstream water management. The completion of the impoundment phase allowed the hydroelectric power station to start its expected annual generation of 482 GWh. The Sardasht Dam thus stands as a testament to the strategic planning and engineering execution involved in modern hydroelectric projects in Iran, specifically within the West Azerbaijan province.
Engineering and Structural Specifications
The Sardasht Dam is classified as a rock-fill earth core embankment dam. This structural design utilizes a central core of earth materials surrounded by rock-fill shells to manage hydrostatic pressure and seepage. The dam is situated on the Little Zab river, located 13 km southeast of the town of Sardasht in the West Azerbaijan province of Iran. The structure stands 116 m tall and extends 275 m in length. These dimensions define the primary geometric parameters of the hydraulic barrier.
| Parameter | Value |
|---|---|
| Dam Type | Rock-fill earth core embankment |
| Height | 116 m |
| Length | 275 m |
| River | Little Zab |
The hydroelectric power station integrated into the dam infrastructure has an installed capacity of 150 MW. The expected annual energy generation is 482 GWh. These figures represent the operational output targets for the facility. The dam began to impound its reservoir on 22 June 2017, marking the commencement of the primary hydraulic function. This date signifies the transition from construction to operational status for the water retention system.
Hydroelectric Power Generation Capacity
The Sardasht Dam integrates a hydroelectric power station with an installed capacity of 150 MW, serving as a significant energy infrastructure asset in the West Azerbaijan province of Iran. This capacity is generated through the hydraulic head provided by the 116 m tall rock-fill earth core dam structure. The facility is designed to deliver an expected annual generation of 482 GWh, contributing to the regional grid stability and energy supply in the northwestern part of the country. The power generation capability is directly linked to the water management and storage functions of the reservoir, which began impounding water on 22 June 2017.
The operational timeline of the power station reflects a phased construction approach that spanned nearly a decade. The construction contract for the dam was awarded in 2009, with official construction activities commencing in 2011. A critical milestone in the hydroelectric infrastructure development was the completion of the river diversion tunnels in November 2012. The delay between the initial reconnaissance studies, which were completed in 1999 by Moshanir Consulting Engineers Company, and the start of official construction underscores the complexity of large-scale embankment dam projects in the region.
Within the West Azerbaijan energy mix, the 150 MW output of the Sardasht Dam provides a reliable baseload and peaking power source, leveraging the flow of the Little Zab river. The expected annual generation of 482 GWh represents a substantial contribution to the provincial electricity demand, helping to balance variable renewable sources and thermal generation. The dam's location, 13 km southeast of Sardasht, positions it strategically to capture water resources from the Little Zab, optimizing the hydraulic efficiency for power production. The rock-fill earth core design ensures structural integrity and efficient water retention, which is essential for maintaining consistent turbine operation and power output throughout the year. The integration of this hydroelectric facility supports broader energy security goals in Iran, diversifying the generation portfolio and enhancing the resilience of the regional power grid.
Construction Timeline and Project Milestones
The development of the Sardasht Dam spanned nearly two decades, beginning with initial reconnaissance studies completed in 1999 by Moshanir Consulting Engineers Company. These early studies laid the groundwork for the project, which would eventually result in a 116 m (381 ft) tall rock-fill earth core dam on the Little Zab river, located 13 km (8 mi) southeast of Sardasht in the West Azerbaijan province of Iran.
Contract Award and Construction Start
Following the completion of the reconnaissance phase, the project moved into the contracting stage. Official construction activities commenced two years later, in 2011, marking the physical start of the infrastructure development. The dam is designed as an embankment structure with a length of 275 m (902 ft) and includes a hydroelectric power station with an installed capacity of 150 MW.
River Diversion and Reservoir Impoundment
A significant milestone in the construction process was the completion of the river diversion tunnels. This phase was finalized in November 2012, celebrated in a ceremony attended by Majid Namjoo from Iran's Ministry of Energy. The diversion allowed for the systematic filling of the reservoir. The facility is expected to generate an annual output of 482 GWh.
| Year | Event |
|---|---|
| 1999 | Reconnaissance studies completed by Moshanir Consulting Engineers Company. |
| 2009 | Construction contract awarded. |
| 2011 | Official construction began. |
| November 2012 | River diversion tunnels completed; ceremony attended by Majid Namjoo. |
| 22 June 2017 | Reservoir impoundment began. |
What are the key engineering challenges of the Little Zab River?
The construction of the Sardasht Dam required specific engineering adaptations to the geographical and hydrological characteristics of the Little Zab River basin in West Azerbaijan, Iran. The project involved the erection of a 116 m tall and 275 m long rock-fill earth core dam located 13 km southeast of Sardasht. This structural design was selected to manage the river's flow and create a reservoir with an expected annual generation of 482 GWh, contributing to the region's hydroelectric capacity of 150 MW.
Hydrological Context and Site Selection
The Little Zab River serves as the primary water source for the hydroelectric power station. The site selection, finalized after reconnaissance studies completed in 1999 by Moshanir Consulting Engineers Company, necessitated detailed analysis of the river's discharge patterns and sediment load. The dam's location in the Iranian province of West Azerbaijan presents distinct topographical challenges, requiring a structure capable of withstanding regional geological stresses while efficiently diverting the river's flow for power generation.
Engineering Considerations for Rock-Fill Earth Core Dams
Constructing a rock-fill earth core dam in this region involves precise layering of materials to ensure stability and impermeability. The Sardasht Dam's design utilizes a rock-fill structure with an earth core to balance strength and flexibility, critical for managing the hydraulic pressure of the impounded reservoir. The construction contract awarded in 2009 and the commencement of official works in 2011 reflected the complexity of mobilizing resources for this 116 m high structure. Engineers had to address the integration of the dam with the existing riverbed, ensuring that the rock-fill materials provided adequate support for the earth core under varying load conditions.
River Diversion and Construction Phasing
A critical engineering phase involved the diversion of the Little Zab River to allow for the main dam structure's construction. The river diversion tunnels were completed in November 2012, a milestone marked by a ceremony attended by Iran's Ministry of Energy official Majid Namjoo. This diversion infrastructure was essential for managing the river's flow during the peak construction years, enabling the placement of the rock-fill and earth core materials without excessive hydraulic interference. The successful completion of these tunnels facilitated the subsequent impoundment of the reservoir, which began on 22 June 2017, marking the operational readiness of the dam's primary hydraulic functions. The engineering team had to ensure that the diversion tunnels could handle the Little Zab's seasonal flow variations, a key factor in the timely progress from the 2011 start date to the 2017 impoundment.
Significance
The Sardasht Dam constitutes a significant component of the energy infrastructure within West Azerbaijan Province, Iran. As an operational hydroelectric powerplant, it contributes 150 MW of installed capacity to the regional grid, with an expected annual generation of 482 GWh. This output supports the energy demands of the province, leveraging the hydraulic potential of the Little Zab river. The dam's location, situated 13 km southeast of Sardasht, places it strategically within the province's hydrological network, enhancing the reliability of power supply in the region.
The structure itself is a major embankment dam, characterized by its substantial physical dimensions. It stands 116 m tall and spans 275 m in length, utilizing a rock-fill earth core design. This engineering approach allows for efficient water retention and power generation, adapting to the topographical and geological conditions of the Little Zab basin. These technical achievements underscore the dam's role as a key infrastructure project in the region.
The development of the Sardasht Dam reflects a long-term planning process, with reconnaissance studies completed in 1999 by Moshanir Consulting Engineers Company. The construction contract was awarded in 2009, and official construction began in 2011. The dam started impounding its reservoir on 22 June 2017, marking the beginning of its operational phase. This timeline highlights the sustained effort required to bring the project to fruition, contributing to the modernization of Iran's hydroelectric capabilities. The dam's operation continues to play a vital role in the energy mix of West Azerbaijan, providing a consistent source of renewable energy.
Frequently asked questions
Where is the Sardasht Dam located?
The Sardasht Dam is situated in the West Azerbaijan province of Iran (IR). It is an embankment dam constructed on the Little Zab river. The structure is located approximately 13 km southeast of the town of Sardasht. This geographic positioning places it within the broader hydroelectric infrastructure network of the Iranian province of West Azerbaijan.
What is the installed capacity of the Sardasht Dam power station?
According to the project specifications, the expected annual generation of the facility is 482 GWh. These figures define the primary energy output capabilities of the operational plant.
What are the technical specifications of the dam structure?
These dimensions characterize the embankment design used to impound the reservoir on the Little Zab river. The technical profile reflects standard engineering practices for rock-fill dams in the region.
When was the Sardasht Dam constructed and commissioned?
River diversion tunnels were completed in November 2012. The facility is currently listed as operational.
Summary
The facility functions as a critical component of the regional energy infrastructure, utilizing an embankment dam structure to generate electricity from water flow. This structural design supports the hydroelectric power station, which has an installed capacity of 150 MW. The plant is expected to produce an annual generation of 482 GWh, contributing to the power supply in the Iranian province of West Azerbaijan.
The development of the Sardasht Dam followed a multi-phase construction timeline. The facility remains operational, serving as a key hydroelectric asset in the region.