Eider (Īˈdər) [key], river, 117 mi (188 km) long, rising S of
Kiel, N Germany, and flowing N to the Kiel Canal before turning
west and meandering to the North Sea at Tönning. It is navigable
for most of its length. The Eider's lower course is regulated by
locks; part of its upper course is followed by the Kiel Canal.
The river separates Schleswig from Holstein. The Columbia
Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia
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articles on: Central European Physical Geography