Because in Romania we don't have digital maps (here digital maps means a simple scan from the paper map with geo-ref coordinates), i do all the work manually. Near the met mast or the wind turbines i'm defining by hand all the height lines, if i have topographical measures i also combined them, then i complete the extended area with the SRTM lines. For the roughness map, i use a combination of GoogleEarth/Global Mapper/Autocad. Because the national/military maps are to old i'm making a grid, then i export this grid in GoogleEarth, i select a squere from this grid, then zoom at maxim, make a screen shot. After i have screentshots for all the squares, i merge the images and i geo-ref them. Then i import this image in Autocad and define the roughness areas. I don't use WAsP Map Editor for this because it's hard to zoom in/out or use other functions for drawing. From Autocad i export everything to MAP Editor, then set the roughness values. Also, with Global Mapper i make an export for Google Earth, with the defined roughness areas, with different hatch for different area type, in order to see everything clearly in Google Earth. It'a a lot of hard work, but i know some wind reports made by others using scaned paper maps, with turbines placed in villages, or in lakes, because they didn't check the GoogleEarth.