Many thanks for that indeed!
Doing a bit more reading it appears the main river is "highly polluted". Great start! lol
Other still waters I have identified on google maps appear to be nature reserves or "municipal" supplies and not fishable.
I did find one carp water within an hours drive, but its a commercial place where it is hired out on a weekly basis only. No popping in for a few hours stalking.
It looks like the Pike season is closed in July when I am there. I did look at Zander as I still have not had one, but they don't seem to be about in numbers.
I am thinking tours of the battle fields etc are the order of the day rather than mucking about with fishing, unless Belgium is easier to work out
The canals there hold some monster carp!