Dicle

The Dicle is a frequently referenced river when describing regions associated with Kurdish history in ancient geographical sources; it provides valuable information, especially about settlements and routes around the Dicle and Zap (major and minor) rivers (Volume 1, p. 30). Extensive information about the geography between the Fırat and the Dicle, and regions east of the Dicle such as Adiabene, Zabdicene, and Korduene, can be found in these sources (Volume 1, p. 37).

Strabon mentions Gordyene south of Bagranendene, which is on a tributary of the Dicle (Volume 1, p. 34); Curtius also refers to the Gordyene mountains on the right side of the Dicle during Alexander the Great's campaign (Volume 1, p. 45). Dio Cassius recounts that the geography from the Fırat to the borders of Corduene, meaning the region west of the Dicle, was subjected to Roman occupation (Volume 1, p. 35).

The Dicle was occasionally designated as a border between two empires (Volume 1, p. 39). The war techniques and duties in the Pers army of the Deylemîler, who were "far from the Dicle river" on the Pers border, are also mentioned in the sources (Volume 1, p. 38).