Lake Akşehir is a tectonic freshwater

Freshwater

Fresh water is naturally occurring water on the Earth's surface in ice sheets, ice caps, glaciers, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams. Fresh water is generally characterized by having low concentrations of dissolved salts and...

 endorheic

Endorheic

An endorheic basin is a closed drainage basin that retains water and allows no outflow to other bodies of water such as rivers or oceans...

 lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in Afyonkarahisar

Afyonkarahisar Province

Afyonkarahisar Province , also called more simply Afyon Province, is a province in western Turkey.Adjacent provinces are Kütahya to the northwest, Uşak to the west, Denizli to the southwest, Burdur to the south, Isparta to the southeast, Konya to the east, and Eskişehir to the north. The provincial...

 and Konya

Konya Province

Konya Province is a province of Turkey located in central Anatolia. The provincial capital is the city of Konya. It is the largest province by area of Turkey.-Districts:...

 provinces, southwestern part of Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

. It carries the same name as the town Akşehir

Aksehir

Akşehir is a town and district of Konya Province in the Central Anatolia region of Turkey. According to 2000 census, population of the district is 114,918 of which 63,000 live in the town of Akşehir...

 south of the lake.

The lake is fed by Eber Channel, five larger streams from the Sultan Mountains

Sultan Mountains

The Sultan Mountains , also known as Sultan Dagh range or Sultan Dag, is a short mountain range on the western edge of the Anatolian Plateau, Turkey with highest elevation of .The town of Sultandağı is their namesake....

 and many smaller streams. The lake salinity increases towards the middle and northern parts due to underground spring waters. The lake is used for irrigation.