The 1983 Canoeing Ohio book states a min of 190 cfs for this section... but doesn't mention where that figure came from. If from the Grimms that's a long way away and a many small (dry) streams on 3 branches later. At gage 2.9ft = 172 cfs (not verified). I doubt that info helps very much... but it's easier to google than drive to Lisbon. Ha. Really though, maybe I'll just take a ride and go look.
I wonder if a long time ago there was a gage at Willow Grove dam?
On another note I came across this website... don't remember if we had it listed for gage info. Some neat graphics if you poke around.
http://snoflo.org/report/flow/ohio/l...-liverpool-oh/