| River Etherow | |
|---|---|
 The Etherow (left), joined by the Black Cloughs from Bleaklow. | |
 The River Etherow is highlighted in red (click to enlarge) Coordinates: 53°27′54″N 1°58′51″W / 53.464956°N 1.980954°W | |
| Location | |
| Country | England |
| Physical characteristics | |
| Source | |
| • location | Featherbed Moss, South Yorkshire |
| • elevation | 500 m (1,600 ft) |
| Mouth | |
• location | River Goyt |
• elevation | 80 m (260 ft) |
| Length | 30 km (19 mi) |
| Basin size | 77.7 km2 (30.0 sq mi) |
The River Etherow in northern England is a tributary of the River Goyt. Although now passing through South Yorkshire, Derbyshire and Greater Manchester, it historically formed the ancient county boundary between Cheshire and Derbyshire. The upper valley is known as Longdendale. The river has a watershed of approximately 30 square miles (78 km2), and the area an annual rainfall of 52.5 inches (1,330 mm).