Some of my War in the Pacific Admiral's Edition maps have a significant change compared to the official map – the representation of the flooding caused by the diversion of the Yellow River in China is more extensive, and cuts most of the road and rail links in the area.
These maps show the extent of the flooding, and how it is represented on the game map. For more information, see the Yellow River flood, 1938-47 web page, which also describes the scale of the human disaster this event triggered.
The extent of the flooding.
This is how this area is now represented on this map (in-game). The destruction of the Peiping-Hankow railway bridge across the Yellow River is also represented.