River Derg

Coordinates: 54°44′16″N 7°25′49″W / 54.7378°N 7.4304°W / 54.7378; -7.4304
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River Derg
River Derg and the Ardstraw Bridge
EtymologyFrom Lough Derg, 'red lake'
Native nameAbhainn na Deirge (Irish)
Location
CountryRepublic of Ireland, Northern Ireland
Physical characteristics
Source 
 • locationLough Derg, County Donegal, Republic of Ireland
 • elevation138 metres (453 ft)
MouthRiver Mourne
 • coordinates
54°44′16″N 7°25′49″W / 54.7378°N 7.4304°W / 54.7378; -7.4304
Length45 kilometres (28 mi)
Basin size440 square kilometres (170 sq mi)
Discharge 
 • average16.2 m3/s (570 cu ft/s)
River Derg on the Northern Ireland side of the border

The River Derg is a small river in Ireland. The river has its source in Lough Derg, in County Donegal, Republic of Ireland, and it flows into County Tyrone, Northern Ireland, east through Castlederg to join with the River Strule to form the River Mourne. The upper reaches of the catchment are characterised by peatland, while the lower reaches flow predominantly through farmland.[1] The River Derg's length is 28 miles (45 km).[2]

The River Derg is known for its salmon, grilse and sea trout.[citation needed]

See also[edit]

Rivers of Ireland

References[edit]

  1. ^ Derg Archived 3 March 2016 at the Wayback Machine Lough Foyle
  2. ^ Ordnance Survey of Ireland: Rivers and their Catchment Basins 1958 (Table of Reference)