American whitewater has this on their flow info. I’d say it’s pretty accurate.
Look for 1′ of rain within 6 hours at the Glover rain gage.
A paddler’s gauge is on the Hwy E bridge at the put-in. The gauge is new (12/27/2005) so the minimum is not known, maybe 2.0 ft(?). The gauge has yet to be correlated with any of the USGS gauges but a crude indicator of runnability is for the St. Francis to be greater than 5 feet.