| River Marden | |
|---|---|
 The Marden in the Wiltshire market town of Calne | |
| Location | |
| Country | United Kingdom |
| Region | Wiltshire |
| Physical characteristics | |
| Source | Ranscombe Bottom |
| • location | Calstone Wellington, near Calne, Wiltshire |
| • coordinates | 51°24′56″N 2°0′48″W / 51.41556°N 2.01333°W |
| • elevation | 328 ft (100 m) |
| Mouth | Bristol Avon |
• location | near Chippenham, Wiltshire |
• coordinates | 51°27′56″N 2°05′33″W / 51.46556°N 2.09250°W |
• elevation | 151 ft (46 m) |
| Length | 7 mi (11 km) |
| Discharge | |
| • average | 43 cu ft/s (1.2 m3/s) |
| • minimum | 3.9 cu ft/s (0.11 m3/s) |
| • maximum | 1,529 cu ft/s (43.3 m3/s) |
| Basin features | |
| Tributaries | |
| • left | Puddington Brook |
| • right | Rivers Brook, Abberd Brook, Fisher's Brook, Cowage Brook |
The River Marden is a small tributary of the River Avon in England. It flows from the hills surrounding Calne and meets the Avon about a mile upstream of Chippenham. The river has a mean flow of 43 cubic feet per second (1.2 m3/s).