Seydisuyu (also spelled Seydi Suyu) is a river in Eskişehir Province, Turkey. It is a branch of Sakarya. Çatören Dam is built on Seydisuyu. It also runs through the town of Doğançayır.
| Seydi Suyu | |
|---|---|
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| Native name | Seydi Suyu (Turkish) |
| Physical characteristics | |
| Length | 39.8 km |
The river is mentioned in Talip Apaydın’s 1967 book Karanlığın Kuvveti. 39°24′N 31°12′E / 39.400°N 31.200°E
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