FYI, my point about river width was not a put down in any way. I'm not sure if you took it that way. It seems like other people did.
Average river width is not representative because there are often big population centers near wider parts of rivers. For example, when the east cost of the US was settled, people built cities on the wide, navigable (for big ships) parts of rivers that were close to the ocean.
Average river width is not representative because there are often big population centers near wider parts of rivers. For example, when the east cost of the US was settled, people built cities on the wide, navigable (for big ships) parts of rivers that were close to the ocean.