Değirmendere

Değirmendere ancient name: Piksidis
Değirmendere near Maçka (photo from 1990)
Data
location	Trabzon ( Turkey )
River system	Değirmendere
Headwaters	Zigana Mountains 40 ° 39 ′ 55 ″  N , 39 ° 23 ′ 44 ″  E
Source height	approx.  2000  m
muzzle	Black Sea Coordinates: 41 ° 0 ′ 10 ″  N , 39 ° 45 ′ 25 ″  E 41 ° 0 ′ 10 ″  N , 39 ° 45 ′ 25 ″  E
Mouth height	0  m
Height difference	approx. 2000 m
Bottom slope	approx. 33 ‰
length	approx. 60 km
Right tributaries	Altındere , Galyan Deresi
Big cities	Trabzon
Small towns	Maçka
Communities	Anayurt

The Değirmendere ( Turkish for "Mühlbach") is a river to the Black Sea in the northern Turkish province of Trabzon . The river was called Piksidis in ancient times .

The Değirmendere has its source at the Zigana Pass on the provincial border with Gümüşhane . The European route 97 / trunk road D885 follows the course of the river to Trabzon on the Black Sea. The Değirmendere flows through the district of Maçka in a predominantly north-northeast direction. It passes the village of Anayurt and the district town of Maçka. Larger tributaries are Altındere and Galyan Deresi , both from the right. Finally it flows into the Black Sea on the eastern edge of the provincial capital Trabzon. The Değirmendere has a length of about 60 km.