Castle Loch is a shallow eutrophic loch covering an area of around 100 hectares in the town of Lochmaben in Dumfries and Galloway, Scotland. It lies to the west of Mochrum Loch^[1] and has 2 islets. The ruined Lochmaben Castle lies at the southern end of the loch.

Quick Facts Location, Coordinates ...

Castle Loch
Castle Loch
Location	Dumfries and Galloway, Scotland
Coordinates	54.8495°N 4.67030°W / 54.8495; -4.67030
Type	freshwater loch
Primary inflows	several small burns
Primary outflows	Castle Loch burn
Basin countries	Scotland
Max. length	1.25 mi (2.01 km)[1]
Max. width	0.5 mi (0.80 km)[1]
Surface area	92.5 ha (229 acres)[2]
Average depth	6.5 ft (2.0 m)[1]
Max. depth	11 ft (3.4 m)[1]
Water volume	65,000,000 cu ft (1,800,000 m3)[1]
Shore length1	6.4 km (4.0 mi)[2]
Surface elevation	85 m (279 ft)[2]
Islands	2 islets[2]
Ramsar Wetland
Official name	Castle Loch, Lochmaben
Designated	15 March 1996
Reference no.	796[3]
1 Shore length is not a well-defined measure.

Close

The loch was surveyed^[1] in 1903 by James Murray and later charted ^[4] as part of Sir John Murray's Bathymetrical Survey of Fresh-Water Lochs of Scotland 1897-1909.

Castle Loch is an important over-wintering location for the pink-footed goose and the goosander. It has been recognised as a wetland of international importance under the Ramsar Convention,^[3] and has been designated a Site of Special Scientific Interest.^[5]