Kinnickinnic (Milwaukee trib)

After passing under 20th Street (and an Aurora Pharmacy), the river takes a roundhouse left (and as it nears 16th Street). You will see a defunct rail trestle ahead, followed by a double set of active tracks. Just before encountering those, the river drops over about a 3' hydraulic jump (ledge). The river is quite wide here, and the cement landing is quite uniform (and shallow), so one should expect water to sheet downstream quite well from the base. Which is to say I wouldn't expect a wicked reversal to form here at almost any flow, but that is purely supposition, unsupported by actual observation.