The easiest to access by public transportation is Hirayu Onsen, but it has only two lifts. You can get there by bus from Takayama in an hour:
http://www.hirayunomori.com/Dynaland is one of the largest resorts in Gifu, but I cannot find an easy way of access by public transportation. By car, it can be reached in about one hour from Takayama:
http://www.dynaland.co.jp/
The closest is the Hida Takayama ski resort, but it has only lifts. It is a 50 minute drive from central Takayama, but I don't think there is public transportation:
http://www.hida.jp/takayama-ski/