Great Lakes St. Lawrence Seaway System

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:river
gptkbp:builtBy	gptkb:Canada gptkb:United_States
gptkbp:connects	gptkb:Atlantic_Ocean gptkb:St._Lawrence_River gptkb:Great_Lakes
gptkbp:economicImportance	billions of dollars annually
gptkbp:enables	ocean-going vessels to reach Great Lakes
gptkbp:environmentalImpact	invasive species introduction habitat alteration water level changes
gptkbp:governedBy	gptkb:St._Lawrence_Seaway_Management_Corporation gptkb:Saint_Lawrence_Seaway_Development_Corporation
gptkbp:hasLock	gptkb:Welland_Canal gptkb:Eisenhower_Lock gptkb:Snell_Lock gptkb:St._Lambert_Lock gptkb:Beauharnois_Locks gptkb:Cote_Ste._Catherine_Lock gptkb:Iroquois_Lock
gptkbp:hasMajorPort	gptkb:Buffalo gptkb:Chicago gptkb:Cleveland gptkb:Detroit gptkb:Montreal gptkb:Toronto gptkb:Duluth
https://www.w3.org/2000/01/rdf-schema#label	Great Lakes St. Lawrence Seaway System
gptkbp:includes	canals locks channels
gptkbp:length	3700 km
gptkbp:locatedIn	gptkb:North_America
gptkbp:opened	1959
gptkbp:operatedBy	gptkb:Canada gptkb:United_States
gptkbp:season	winter
gptkbp:seasonalClosureReason	ice
gptkbp:serves	gptkb:Ontario gptkb:Quebec gptkb:Great_Lakes_region gptkb:industrial_Midwest
gptkbp:usedFor	general cargo commercial shipping grain export iron ore transport coal transport bulk cargo transport
gptkbp:bfsParent	gptkb:Highway_H2O
gptkbp:bfsLayer	6