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gptkbp:instanceOf
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gptkb:Ancient_technology
gptkb:Irrigation_system
|
|
gptkbp:alternativeName
|
gptkb:Falaj
gptkb:Foggaras
gptkb:Karez
|
|
gptkbp:component
|
Outlet
Gently sloping tunnel
Mother well
Vertical shafts
|
|
gptkbp:culturalSignificance
|
Traditional engineering
|
|
gptkbp:date
|
1st millennium BCE
|
|
gptkbp:documentedIn
|
gptkb:Polybius
gptkb:Al-Biruni
Herodotus
|
|
gptkbp:environmentalImpact
|
Reduces evaporation
Sustainable water supply
|
|
gptkbp:function
|
Transport groundwater to surface
|
|
gptkbp:influenced
|
Water management in arid regions
|
|
gptkbp:length
|
Can exceed 50 km
|
|
gptkbp:maintenance_method
|
Access via vertical shafts
|
|
gptkbp:maximumDepth
|
Can reach 300 meters
|
|
gptkbp:notableExample
|
gptkb:Gonabad_Qanat
|
|
gptkbp:originatedIn
|
gptkb:Iran
gptkb:Persia
|
|
gptkbp:powerSource
|
Gravity
|
|
gptkbp:spreadTo
|
gptkb:Central_Asia
gptkb:China
gptkb:Middle_East
gptkb:North_Africa
gptkb:Spain
|
|
gptkbp:still_in_use
|
Yes
|
|
gptkbp:structureType
|
Underground channel
|
|
gptkbp:technology
|
gptkb:Hindu_temple
gptkb:dam
gptkb:Noria
|
|
gptkbp:threats
|
Climate change
Urbanization
Modern drilling
|
|
gptkbp:UNESCOWorldHeritageSite
|
gptkb:The_Persian_Qanat
|
|
gptkbp:usedFor
|
Drinking water supply
Irrigation
|
|
gptkbp:bfsParent
|
gptkb:Yazd,_Iran
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Qanat water system
|