Long Lake Branch - Drummond Lake to Taylor Lane (10.3 miles) ('theoretical run') (WI)
Likely less than 100 cfs. Likely entirely too low for reasonable whitewater.
Looking at maps, it appears that the stream approaches very close to Nymphia Lake Road, and that one might use that as an alternate access/egress point. What the map doesn't show (unless you pull up a Topo Map) is that the road is approximately 100' of elevation above the stream at this point.