Gully development dynamics that occurred from 1971 to 2002 around the Debre Zeyitrnarea were evaluated using remote sensing and GIS in addition to field verification. Thernstudy was conducted in about 694-km2 area with in the East Showa Zone of the OromiarnRegion.rnThe main objective of this study is to understand the rate, cause and extent of gullyrnerosion around Debre Zeyit area in terms of change in landcover, development ofrninfrastructure, soil type and geology of the area. Four sets of remotely sensed images,rnMSS-1973, TM-1986 & 1995 and ETM+ 2002 are used in evaluation of the change inrnlanduse and landcover of the area with in of 13, 9 and 7 years gaps and Aerialrnphotographs of 1971 as well as the 2002 ETM+ image are used in gully development raternmapping. In addition to this field measurement of gullies width and depth volumerncalculation is done to quantify the amount of soil lost by all gullies and rate of soil loss byrnnew gullies with in 31 years gap.rnResults of landcover change analysis show cultivated land increased from 50% in 1971 torn55% in 1986 and to 67 and 69% in 1995 and 2002 respectively. The overall increase inrncultivated land is about 19%, which was mainly at the expense of grasslands and densernshrub covers. The area which was mainly covered by the dense shrubs is changed to openrnwoodland and cropland. The size of urban and water bodies increased from 1.04% torn1.7% and 0.73% to 1.02% percent due to population increase and construction of damsrnrespectively. The area covered by wetland also show minor differences in size due tornevaporation.rnNew gullies are developing in areas where the original landcover is removed and wherernslopes are between 2 and 10 percent. In addition to this on the southern part of the studyrnarea construction of roads are important causes of gulling where the soil type andrnlithology are favoring erosion processes.