River Calder, Lancashire
| River Calder | |
|---|---|
The River Calder at Altham | |
| Location | |
| Country | England |
| Physical characteristics | |
| Source | |
| • location | Calderhead, Cliviger, Lancashire |
| • elevation | 758 ft (231 m) |
| Mouth | |
• location | River Ribble near Brockhall Village |
• elevation | 100 ft (30 m) |
| Length | 20 mi (32 km) |
The River Calder is a major tributary of the River Ribble in Lancashire, England, and is around 20 miles (32 km) in length.