Quote Originally Posted by Gamerprinter View Post
CCJAR, go look at the September 2008 Mapping Challenge - there are 30 entries and creating marshland/swamp was among the requirements on that mapping challenge.
What GP said.

For myself, what I did was use a splatter type brush with the eraser tool to cut out bits of the area to define the marsh(after adding some color/texture overlay to the area), thus letting my underlying water layer show through a bit. One thing to remember is that swamps and marshes are different, Marshes are shallow and typically many(most?) marshes are in tidal areas, so the water level may be almost nothing during low tide. Swamps are typically much deeper in comparison.