The hydronym is derived from the words ag and chala (a depression, a hole; a stream, a well; an uncultivated place; a depression filled with rain and river water). Some researchers say that this hydronym is related to water quality, while others associate it with the fact that the water in the lake dries up in the summer and that the salts are exposed and it is white in color. Sources indicate that there are four lakes named Agchala only in Salyan and Bilasuvar regions.Encyclopedic dictionary of Azerbaijani toponyms. In two volumes. Baku, "East-West", 2007,
