Match: Q14713619 + relation/11648531

Wikidata: Copper Lake (Q14713619)
OSM: Copper Lake (relation 11648531)
matcher place: Whatcom County (relation 1153762), North Cascades National Park (relation 2421537), Stephen Mather Wilderness (relation 16156374)
Wikidata and OSM exact location match
English Wikipedia categories: Lakes of Washington (state), Lakes of Whatcom County, Washington, North Cascades National Park, Whatcom County, Washington, geography stubs
Tags from Wikidata and Wikipedia: natural=lake, natural=water, water=lake, water=pond

Wikidata location: 48.9181, -121.4508 view on OSM

OSM tag name=Copper Lake matches Copper Lake in these Wikidata fields:

Lakes of Washington (state)	water=lake, water=pond, natural=lake
Lakes of Whatcom County, Washington	water=lake, water=pond, natural=lake