Red, I'm not familiar with Furnace lake so I can't give you any first hand info. I found a site that seemed to list fish species in the lake. They listed bass, walleye, crappie among a few others. I looked the lake up on the DNR website and the map of the lake showed it with a SIX foot max depth??? Something semis wrong with that tho.
Perhaps somebody with knowledge will chime in.
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