Naming Rivers

This is a variation on the themes inspected by Boetti and his wife in their "The thousand rivers". In this case, what is inspected is the name with which the river are addressed. Terms like "fork", "canal". Beside, the technology is outstanding. Below, please find the Great Britain.

The case of United States is:

The original sites, images, and explanation regarding how the maps where realized,  can be found at: http://spatialanalysis.co.uk/2011/08/naming-rivers-and-places/
The blog itself is very interesting to follow.