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Kâğıthane Creek (Turkish: Kâğıthane Deresi) is a small river located in Istanbul. It originates from a source in the east of Lake Durusu. Eyüp passes through the districts of Şişli and pours into Haliç in Kâğıthane. It is rumored that the creek, known as "Barbisos" in the Byzantine period, started to be referred to as the Kâğıthane Creek due to the paper factory around it during the Ottoman period.