(Jackson Ck. confluence, USGS sampling site, and ...) Hydraulic Jump

USGS lists a sampling site with drainage area 83.3 square miles. That is, flow here might be about 4/10ths the gauge reading.

Immediately downstream of the confluence with Jackson Creek, a short dam ('hydraulic jump') spans the creek. Canoes (15-17') are likely to span the drop and be fine. Shorter recreational kayaks (and proper whitewater boats) may be likely to be caught by the reversal. There should be slackwater enough to get ashore to scout and (likely) portage.

FWIW, the road which nears the river on the south/river-left is marked 'Private Drive Keep Out'. The north/river-right shore contains the Delavan Street Department. Signs indicate the property is under video surveillance, so it might not be a good idea to linger on either shore!