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WE had a flood here in 97, and our hardwood kitchen (maple,100 yr old house) floor did that (heaved) from water wicking up. What we did, was run heater, blowing a fan from the basement up through at that spot.....for a couple weeks. We also moved our fridge, or something very heavy on top of the boards. It worked great. Course if you don't have a basement, it might be hard. We could see our sub floor drying, so no worries about mold for us. If you have a floating wood floor, you might have an easier time just replacing. Good luck.