38°26′31″N 48°52′55″E / 38.442°N 48.882°E
| Astarachay Astaraçay, آستاراچای | |
|---|---|
 | |
| Location | |
| Countries | Iran and Azerbaijan |
| Province | Gilan, Iran |
| District | Astara, Azerbaijan |
| Cities | Astara, Iran Astara Azerbaijan |
| Physical characteristics | |
| Mouth | Caspian Sea |
| Length | 38 km (24 mi) |
| Basin size | 242 km2 (93 sq mi) |
The Astarachay (Talysh: Ostororü, Persian: آستاراچای, Azerbaijani: Astaraçay), is a small river that defines the eastern border between Iran and Azerbaijan in Western Asia.[1]
The river discharges into the Caspian Sea. After flowing in a canyon through the Alborz mountain range, it reaches its river mouth on the southwestern Caspian coast.
The Astarachay is partially in Gilan Province of far northwestern Iran.