It's everywhere. Here's some American news stories:

NY:

https://nyc.streetsblog.org/2024/09/12/the-river-wild-bikes-...

Michigan:

https://www.mlive.com/environment/2024/08/seriously-waterway...

DC:

https://irrigationleadermagazine.com/not-so-convenient-why-s...

Ohio:

https://www.nbc4i.com/news/local-news/columbus/30-electronic...

It doesn’t have to be drunks. I know plenty of people who, if they’re forced to move hire bikes left blocking the pavement, will do so carelessly as a matter of principle.

Close, think more northern.

Liverpool was my other guess