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The River Derg is a small river in
Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...
. The river has its source in the Lough Derg, in
County Donegal County Donegal ( ; ga, Contae Dhún na nGall) is a county of Ireland in the province of Ulster and in the Northern and Western Region. It is named after the town of Donegal in the south of the county. It has also been known as County Tyrconn ...
,
Republic of Ireland Ireland ( ga, Éire ), also known as the Republic of Ireland (), is a country in north-western Europe consisting of 26 of the 32 Counties of Ireland, counties of the island of Ireland. The capital and largest city is Dublin, on the eastern ...
and it flows into
County Tyrone County Tyrone (; ) is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the thirty-two traditional counties of Ireland. It is no longer used as an administrative division for local government but retai ...
,
Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...
east through Castlederg to join the
River Strule The River Strule is a small river in County Tyrone, Northern Ireland. The river has its source in the confluence of the rivers Camowen and Drumragh at Omagh. The Strule runs to north and meets the rivers Fairy Water and Owenkillew before joi ...
forming the
River Mourne The River Mourne ( ga, An Mughdhorn) is a river in County Tyrone (between Strabane and Newtownstewart), Northern Ireland, and is a tributary of the River Foyle It is formed at the meetings of the River Derg and River Strule below Ardstraw. At St ...
. The upper reaches of the catchment are characterised by
peatland A mire, peatland, or quagmire is a wetland area dominated by living peat-forming plants. Mires arise because of incomplete decomposition of organic matter, usually litter from vegetation, due to water-logging and subsequent anoxia. All types ...
, while the lower reaches flow predominantly through farmland. The River Derg's length is .Ordnance Survey of Ireland: Rivers and their Catchment Basins 1958 (Table of Reference) The River Derg is known for its
salmon Salmon () is the common name for several commercially important species of euryhaline ray-finned fish from the family Salmonidae, which are native to tributaries of the North Atlantic (genus ''Salmo'') and North Pacific (genus '' Oncorhy ...
,
grilse Salmon () is the common name for several commercially important species of euryhaline ray-finned fish from the family Salmonidae, which are native to tributaries of the North Atlantic (genus '' Salmo'') and North Pacific (genus ''Oncorhynchu ...
and sea trout.


See also

Rivers of Ireland Shown here are all the major rivers and tributaries of Ireland with their lengths (in kilometres and miles). Starting with the Northern Ireland rivers, and going in a clockwise direction, the rivers (and tributaries) are listed in regard to their ...


References

Derg Derg {{Ireland-river-stub