Parts of the Termon River form the border between

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 Tyrconne ...

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 ...

and

County Fermanagh County Fermanagh ( ; ) is one of the thirty-two counties of Ireland, one of the nine counties of Ulster and one of the six counties of Northern Ireland. The county covers an area of 1,691 km2 (653 sq mi) and has a population of 61,805 a ...

in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

. It rises near Scraghy and flows into

Lough Erne Lough Erne ( , ) is the name of two connected lakes in County Fermanagh, Northern Ireland. It is the second-biggest lake system in Northern Ireland and Ulster, and the fourth biggest in Ireland. The lakes are widened sections of the River Erne, ...

about two miles from

Pettigo Pettigo, also spelt Pettigoe ( ; ), is a small village and townland on the border of County Donegal, Republic of Ireland and County Fermanagh, Northern Ireland. It is bisected by the Termon River which is part of the border between the Republ ...

. The length is approximately 16 km (10 mi). Based on maps of the international border, the river only forms the actual border line in patches of the frontier.Google maps of the Ireland/UK border

References

Rivers of County Donegal Rivers of County Fermanagh International rivers of Europe Republic of Ireland–United Kingdom border {{NorthernIreland-river-stub