The main rivers to the gulf are Göksu in the west, Berdan (Tarsus) and Seyhan in the east. There are also a number of smaller rivers such as Alata, Limonlu, Tece, Mezitli and Müftü. (The smaller rivers usually have irregular flow rates depending on the season.)
Coastal settlement
The biggest city of the gulf is Mersin which is one of the metropolitan centers in Turkey. Port of Mersin with a well established harbor and related infrastructure is one of the biggest ports of Turkey. The port is mainly oriented towards export.
Erdemli which is in the west of Mersin is a district center. Taşucu and Karataş are smaller towns. In Taşucu, there is a minor port which is a terminal for Cyprus ferries. Just east of Taşucu there is a fishery in the Göksu Delta. Along the coast there are also coastal villages most of which are specialised in citrus production.
References
^Faik Sabri Duran, Büyük Atlas (İstanbul: Kanaat Yayınevi, 2001; ISBN975-7537-04-7).