Iowa City has web pages for the rules on snow removal by the city plows and by residents.
You can see the pdf of the map for residential street priorities for snow removal.
Shoveling snow or using a heavy snow blower can be hazardous to your health. There is guidance from the National Safety Council about how to remove snow. On the other hand, there are definite rules about clearing snow from your sidewalk.
There are no rules against juggling snowballs that I know of.
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