lake zway or lake ziway (oromo: lake dambal) is one of the freshwater rift valley lakes of ethiopia. it is located about 100 miles south of addis ababa, on the border between the regions of oromia region and of the southern nations, nationalities, and peoples' region; the woredas holding the lake's shoreline are adami tullu and jido kombolcha, dugda, and ziway dugda. the town of batu lies on the lake's western shore. the lake is fed primarily by two rivers, the meki from the west and the katar from the east, and is drained by the bulbar which empties into lake abijatta. the lake's catchment has an area of 7025 square kilometers.