Polnaya (Russian: Полная, Ukrainian: Повна, romanized: Povna) is a river in the Rostov Oblast of Russia and the Luhansk Oblast of Ukraine, the left and largest tributary of Derkul. It is 79 kilometres (49 mi) long, and has a drainage basin of 2,390 square kilometres (920 sq mi).[1] Its largest tributary is the Komyshna.
| Polnaya | |
|---|---|
 | |
| Native name | Полная (Russian) |
| Location | |
| Country | Russia, Ukraine |
| Region | Rostov Oblast, Luhansk Oblast |
| Physical characteristics | |
| Source | |
| • location | Mikhailovo-Alexandrovka, Chertkovsky District |
| • coordinates | 49°06′37″N 40°16′28″E / 49.1103°N 40.2745°E |
| Mouth | Derkul |
• coordinates | 48°54′3″N 39°50′1″E / 48.90083°N 39.83361°E |
| Length | 79 km (49 mi)[1] |
| Basin size | 2,390 km2 (920 sq mi)[1] |
| Basin features | |
| Progression | Derkul→ Donets→ Don→ Sea of Azov |
 | |