In the Vinony graph
Vinony's link graph records 11 inbound references to Harle, and connects out to Germany, North Sea and geographic coordinate system.
The entry is geolocated on the map in DE.
Vinony files it under Coastal basins of the North Sea in Germany, Geography of East Frisia and Rivers of Germany.
Vinony links it to 10 Wikipedia language editions.
On the map
Available in 10 languages
via Wikidata sitelinks · CC0