Parts of the Termon River form the border between County Donegal in Ireland and County Fermanagh in the United Kingdom. It rises near Scraghy and flows into Lough Erne about two miles from Pettigo. 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.
Coordinates: 54°32′N 7°51′W / 54.533°N 7.850°W / 54.533; -7.850
Termon (Irish: An Tearmann, meaning "place of sanctuary") is a village and townland in the north of County Donegal, Ireland.
Termon is located eight miles from Letterkenny, Donegal's main town and seven miles from Creeslough. Termon is made up of many townlands including Currin, Doon, Drumlaurgagh, Drumbrick, Drumoughill, Cloncarney, Terhillion, Gortnalaragh, Clonkilly, Knocknabollan, Fawans, Drumdeevin, Drumfin, Barnes, Stragraddy, Ballybuninabber, Letterfad, Goal and Gurtin, Loughaskerry.
There are several hills close to Termon, including Lough Salt (469m), the hills of Barnes-Crockmore (the "Resting Bishop") at 324m, 349m & 307m respectively, and Stragraddy mountain (285m). All the hills offer stunning vistas along Donegal's Atlantic coast line or into the higher mountain country of Muckish (666m) and Errigal (749m). Going out on the main R255 road one could turn for Gartan, birthplace of St.Colmcille (St.Columba) or head to Glenveagh National Park and its beautiful surroundings.