Qanat water system

GPTKB entity

Statements (45)
Predicate Object
gptkbp:instanceOf Irrigation system
Ancient technology
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
https://www.w3.org/2000/01/rdf-schema#label Qanat water system
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
gptkb:Yazd,_Iran
gptkbp:bfsLayer 6