Simple CD base used to create an area of marshy bogey ground, polystyrene base from a pizza used for the ground, PVA'd onto the CD base then using a sharp scalpel to cut out the areas of water. March grass is sizzle string, painted green. The water was painted using humbrol enamel paints. The colour is a very dark green almost black. The blue in the photo is just the reflected from the blue background I use in my photos.
I thought this worked very well, for minimum time and effort. Looking into using the same technique to produce inter- connecting river sections for use on my DBA board.