Jerma (river)
| Jerma | |
|---|---|
The Erma Gorge, Bulgaria | |
| Native name | |
| Location | |
| Country | Serbia, Bulgaria |
| Physical characteristics | |
| Source | |
| • location | near Lake Vlasina, Serbia |
| Mouth | |
• location | Nišava near Pirot, Serbia |
• coordinates | 43°4′0″N 22°41′7″E / 43.06667°N 22.68528°E |
| Length | 72 km (45 mi) |
| Basin features | |
| Progression | Nišava→ South Morava→ Great Morava→ Danube→ Black Sea |
The Jerma (Serbian Cyrillic: Јерма) or Erma (Bulgarian: Ерма) is a river in southeastern Serbia and western Bulgaria. It is notable for passing the Bulgarian-Serbian border twice.