First of all, thanks Redrobes for a great tutorial. I found it very informative.

As far as frequency of lakes go, I live in Windermere ("among the lakes") Florida - can't go 1 mile without running into a large body of water (which, btw, is inevitably infested with alligators). Limestone makes for a very permeable foundation with lots of underground waterways and springs bubbling up everywhere. No mountainous glacial melt for us though.