IJ or Y both: ī [key], inlet of the Markermeer, North Holland prov., NW Netherlands, on which Amsterdam is located. It receives the Amstel River and is connected by canals with the North Sea and with the Lek and Waal rivers.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Benelux Political Geography