The studied corridor, part of the Main Ethiopian Rift, has been delineated so as torninclude eastern and western escarpment, floor of the rift, and the Lakes Ziway & KokarnDam. All of which has the total aerial coverage of almost 6000 sq. Km.rnGeological coverage of the studied area is dominated by Lacustrine deposit at the floorrnof the rift, which is followed by other sub formation.rnIntegrated methodology and approaches are conducted to observe the groundwater flowrnsystem and to determine hydrochemistry (water potablity) of the corridor. Both of whichrnare interrelated each other and brought the same output.rnGroundwater flow system are considered as shallow and deep aquifer cases and thernoutput indicate that the existence of flows in a separate way in the two systems. For therndeeper case, groundwater migrates from southern to northern part of the study corridorrnwhich is disproving/ rejecting the previous work. For the shallower case, groundwaterrnmigrates from north western to south eastern of the corridor.rnHydrochemical data shows: evolution of major ions, water types, potablity of water forrnhuman consumption, fluoride lateral & vertical distribution, which is the main problemrnin the Ethiopian Rift, and direction of groundwater flow.rnGraphical presentations of the physical and chemical parameters of the water samplesrnprovide a good deal of information on the characteristics of ground water flow systems,rnrecharge and discharge zones, and evolution of major ions in the corridor.rnrnAbiyu K. Groundwater Flow & Hydro chemistry of Taxiway-Kora Corridor A