... experience. Water Resources Bulletin, 29( 6) :90 9 91 6.Garbrecht J., and L. W. Martz, 199 9. TOPAZ: An Automated Digital Landscape Analysis Tool for Topographic Evaluation, Drainage Identification, Watershed ... 75Fairfield, J., and P. Leymarie, 199 1. Drainage Networks from Grid Digital Elevation Models. Water Resources Research, 27(4): 29 61.Garbrecht, J., and L.W. Martz, 199 3. Network and subwatershed parameters ... aresimilar for both soil names. Therefore, special care was taken to ensure that the attribute data were72 GIS FOR WATER RESOURCES AND WATERSHED MANAGEMENT © 2003 Taylor & FrancisChapters...