[SLO]

Originally Posted by Steely Dan

no.

the great lakes do have tides, but they are measured in mere centimeters (1 - 5 cm) in most places, and thus are not of any real consequence like they are in oceanic tidal zones.

and even if the great lakes were subject to larger ocean-like tides, the mouth of the chicago river is controlled by a lock that would prevent any incursion of tidal water into the river.

because the flow of the chicago river was reversed a century ago, the river level is almost always lower than the lake level, so a lock is needed to control the flow of water from the lake into the river.

that said, the riverwalk is subject to very occasional flooding when we get extremely large rainfalls that can cause the river level to rise several feet.

Makes sense, I recall that now from a river tour. Great looking amenity.