[OSM-talk] River boundaries , not Post code areas

[Liz]

On Fri, 2 Apr 2010, Frederik Ramm wrote:
> I don't understand. Surely you would create a boundary relation that 
> uses the way representing the river to construct the boundary - rather 
> than tracing the boundary line over the river line and having two 
> separate ways?
> 
> That correcting the river then automatically also corrects the boundary 
> follows automatically.
> 
The river can move, but leave the boundary behind.
Particularly on the River Murray, where the southern bank is defined as the 
boundary.
Where dams have flooded the area, the river bank is now further south, but the 
legal border remains at the old riverbank.
JS would be able to produce a link with nearmap imagery at Mulwala/Yarrawonga 
to demonstrate this.