Understanding the groundwater availability is very important to plan, develop and managernthe water resources sustainably. In Addis Ababa city the impact of land use land coverrnchange on groundwater recharge was not well studied previously. Therefore, this studyrnwas aimed to investigate the land use land cover changes that occurred for the last tworndecades and its impact on ground water recharge in Addis Ababa city. Land use landrncover classification has been carried out in the year 2000 and 2020 using Arc GIS.rnBesides, WetSpass-M model has been simulated two times for the year 2000 and 2020rnusing similar input data but in the case of land use land cover data was given thernrespective years. Addis Ababa city has received a loge-term average of 1115.7 mmrnrainfall. Based on the module output recharge was decline. In the case of 2000 modelrnsimulation 160.9 mm or 14.3 % from annual precipitation was turn in to recharge which isrnequivalent to 82,219,000 cubic meters (Mm3) for Addis Ababa city (with in the area of therncity about 511 km2). But this percent was decline to 9.26 % from the annual meanrnprecipitation was turn into ground water recharge for the year 2020 simulation which isrnequivalent to 103.3 mm or 52,786,000 cubic meters (Mm3) with the same city area (511rnkm2). In both simulation 88 % recharge was occurred during kiremt /rainy seasons whilern12 % of recharge was occurred in bega /dry season. WetSpass was successfully simulatedrnspatial and temporal differences of ground water recharge and the assessment of land usernland cover changes was also don very effectively using Arc GIS and ERDAS softwareâ€™s