...that street flooding in Chicago is a feature, not a bug:
Chicago’s sewer network has an “inlet control valve system” that intentionally limits water intake during heavy rainfall events so as to not overwhelm the wastewater system, with the streets acting as a temporary holding area.
For that reason, the street flooding is normal, [Ald. Andre Vasquez (40th)] said. But residents who are experiencing over-the-curb basement flooding should file a ticket with 311 and reach out to local officials to report the issues, according to a city news release.
“If it’s flooding on the street, that’s intentional. If there’s flooding in the basement, submit the request so the Department of Water Management can follow up once the rain stops,” Vasquez said.
To help avoid flooding, residents should also avoid running their dishwasher or washing machine during the storm and disconnect downspout connections from the sewer system and redirect water flow to areas with permeable surfaces where stormwater can be absorbed, officials said.
We got a few centimeters of water in our storage area, but fortunately most of us have our stuff up on pallets, and we have a shop vac. Cassie isn't getting a lot of walks today, though.