Mizan Dam
Sasanian-era regulatory dam in Iran's Shushtar Hydraulic System.
Mizan Dam (Persian: بند میزان, Band-e Mizan) dates from the Sasanian period and forms part of the Shushtar Historical Hydraulic System, situated on the island city of Shushtar in Iran’s Khuzestan Province. In 2009, UNESCO listed it as a World Heritage Site—Iran’s tenth—alongside twelve other historic bridges, dams, canals, and structures within the same hydraulic system.
The dam’s current structure goes back to the 3rd century CE, though it may rest on older foundations from the 5th century BCE. It was built by Roman soldiers and engineers captured after Emperor Valerian (reigned 253–260 CE) was defeated by Shapur I (reigned 240–270 CE).
Upstream of a man-made canal called Gargar—dug to divert water from the Karun River—the dam controls the flow into that canal. Because it regulates water for the Gargar, a branch of the Karun, it is considered a regulatory dam.
The dam is made of stone, Saruj mortar, and sandstone in its foundation. These materials have kept their original character, with no later interventions, though some sections show differences due to repairs carried out in different restoration periods.
Because of where it sits and how it works, the dam sometimes gets submerged. Severe floods in past decades have also affected it.
- type
- Regulatory dam
- era
- Sasanian era, with probable older bases from the 5th century BC
- present_form_date
- 3rd century CE
- location
- Shushtar, Khuzestan Province, Iran
- material
- Stone, Saruj mortar, sandstone foundation
- part_of
- Shushtar Historical Hydraulic System
- UNESCO_registration
- 2009
Quick Facts
- Location
- Shushtar County, Khuzestan Province, Iran
- Criteria
- (i), (ii), (v)(i), (ii), (v)
- Year
- 2009
- Area
- 240.4 ha
- Buffer Zone
- 1,572.2 ha
Facts from the source article.
Lore & Background
Mizan Dam dates in its present form from the 3rd century CE, probably on older bases from the 5th century BC. It was built by Roman soldiers and engineers taken into captivity along with Emperor Valerian after his defeat by Shapur I. The dam is located upstream of a manmade canal called Gargar, which was dug to divert water from the Karun River. Mizan Dam regulates water for the Gargar tributary, functioning as a regulatory dam.
Reader's Guide
Mizan Dam is a key component of the Shushtar Historical Hydraulic System, a UNESCO World Heritage Site recognized in 2009. Its construction by Roman captives under Sasanian rule illustrates the transfer of engineering knowledge in antiquity. The dam's regulatory function for the Gargar canal demonstrates sophisticated water management in the region. Its materials—stone, Saruj mortar, and sandstone foundation—have maintained authenticity despite some differences from restoration periods. The dam faces threats from occasional submersion and severe flooding, which have affected it over previous decades.
Did You Know?
- Mizan Dam was built by Roman soldiers and engineers taken captive after Emperor Valerian's defeat by Shapur I.
- The dam is part of the Shushtar Historical Hydraulic System, which includes 12 other historical structures.
- Its present form dates from the 3rd century CE, possibly on older bases from the 5th century BC.
- The dam is sometimes submerged due to its location and nature.
More in World Heritage Sites in Iran 1-24
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