Thanks for the feedback, gentlemen. Your comments are most welcome and I am always seeking ways to represent these battles as realistically as can be managed within the limitations imposed by toy soldiers and god-like perspective.
Living a long way from Europe, I can't claim to have physically visited the battle site, though I have studied maps and photos (which I'll admit is a poor substitute). In designing the scenario I kept two aims in mind: avoid over-cluttering the tabletop with terrain which slows player deployment and game pace, and only represent the topographical features which would have a noticeable effect on brigade-sized units of 2,000 – 3,000 men.
Oudenarde town predominantly lies in the gently undulating valley of the Scheldt river. This is Belgium, not Bavaria, so yes it's a bit hilly, but not mountainous. There is also marshland, and for these reasons, and the fact that it was a rushed meeting engagement, artillery did not really come into play. This is reflected in the army lists, so artillery will have little bearing on the outcome of the game. To my mind, Oudenarde was more about the determined close quarter attacks of the French infantry under Vendome along the streams and hedgerows, which I think was captured in our game.
There is relatively high ground, up to around 100m above sea level to the east of Oudenarde, and up to around 50m to the west. However, most of this terrain is outside the area of heavy fighting, and outside the area represented by our tabletop. A notable exception is the "Boser Couter," where Overkirk formed up his reserves for the flank attack, and you'll see this on the left-hand edge of our tabletop.
The high ground north of the Norken river in Burgundy's deployment zone is also represented (though the ridgeline is a little smaller than the scenario specifies owing to what we had available on the night). Furthermore, the openness of the tabletop is exaggerated by us opting to set up on a slightly larger table for convenience. Perhaps the next time I can persuade people to play this scenario, we will make the table slightly smaller and the important hills slightly larger.
Cheers,
Caesar