Nakhevartba (Bashlekheli) is a lake on the crest of the Kakheti Caucasus, in Lagodekhi municipality, 2,713 m above sea level. Surface area 0.02 km², greatest depth 12.8 m, average depth 6.0 m. The lake basin is of glacial origin. It is fed by snow, rain and groundwater. The Shromiskhevi River (Alazani system) flows out from its southern shore. The water is clean and transparent.