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https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |
It looks like it's actually a drainage going over another stream. This drainage was built a while back to divert water from the Quinsam River into Campbell lake, in order to reduce the amount of toxic effluent comming from the Quinsam Coal Mines (http://www.env.gov.bc.ca/wat/wq/objectives/quinsam/quinsam.html)
I added a culvert because that makes the most sense, but it would be good to confirm that it's actually there.