The US has 3dep, which is a USGS program to aggregate and publish various federal and state data.
Not really the same thing you are talking about, and not global, but it can be fascinating to look at. You can see old logging railroads and things like that in Michigan, and trace them to where they collected and dumped into rivers.
Not really the same thing you are talking about, and not global, but it can be fascinating to look at. You can see old logging railroads and things like that in Michigan, and trace them to where they collected and dumped into rivers.