Acıgöl (literally the bitter lake in Turkish) is a lake in Turkeys inner Aegean Region, in an endorheic basin at the junction between the provinces of Denizli, Afyonkarahisar, and Burdur. Its surface area varies greatly through the seasons, from 100 km2 in spring to 35 km2 in late summer. The lake has a maximum depth of 1.63 m, with the surface elevation 836 m above sea level. It is notable for its reserves of sodium sulfate, used extensively in industry, and it is the site of Turkeys largest commercial sodium sulfate production operation. The lake lies 60 km east of Denizli city. From west to east, the lakes surrounding districts and towns are Bozkurt, Çardak, Dazkırı and Başmakçı.
