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Lough Allen is nine miles long, and three miles wide and is shaped like an isosceles triangle, writes Martin Branagan.
The Shannon enters the lake at the wider northern end and leaves the lake at the narrower southern end.
Other rivers that feed the lake include the Diffagher (northwest), the Yellow (northeast), the Stoney (east) and the Arigna (southwest).
The R280 regional road skirts the west side of the lake, while the R207 follows the east bank,from Ballinagleragh to Drumshanbo.
The R200 road is on the north side of the lake, traveling west from Dowra to Drumkeeran.
Slieve Anierin lies to the east of Lough Allen. In recent years, there has been speculation that notable reserves of oil and gas lie beneath the lake.
Martin Branagan is a co-founder of LeitrimExperience.ie and is passionate about promoting Leitrim as a tourist destination. Under the LoveLeitrim banner, Martin is touring the county in search of its hidden gems.
A Dubliner by birth and Leitrim resident by choice, Martin can be contacted on +353 (0)86 173 8417 for all advertising queries.
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