River Eske

River Eske
Map showing the flow of River Eske and the six road bridges that cross it
Native name	An Iascaigh
Etymology	From Irish iasc, "fish"
Country	Ireland
Basin features
Main source	Lough Eske
River mouth	Atlantic Ocean via Donegal Bay
Basin size	80.8 square kilometres (31.2 sq mi)
Physical characteristics
Length	24.54 kilometres (15.25 mi)
Discharge	Average rate: 0.16 m3/s (5.7 cu ft/s)

The River Eske (Irish: Abhainn na hIascaigh; also Eask) is a river in the northwest of Ireland in County Donegal in Ulster, beginning at Lough Eske in southeast County Donegal before flowing mainly westwards to the town of Donegal and into the Atlantic via Donegal Bay.

Donegal Town is the only major settlement through which it flows. Despite its size, the river is well known for fishing, especially for spring salmon, sea trout and char, with the season running from 1 March to 30 September.

The river flows in the Bluestack Mountains which are to the north of Donegal Town. In the town, it passes several tourist attractions, one of which is Donegal Castle, the former seat of the O'Donnell Clan, the ancient rulers of the Lordship of Tyrconnell (roughly similar to modern day County Donegal without the Inishowen Peninsula). The mouth of the river is directly opposite a former Franciscan Abbey which was built by the O'Donnells but was destroyed by the English following the Flight of the Earls in 1607.

Almost as soon as the river parts from Lough Eske, it is crossed by Lough Eske Bridge; the river then flows in a southwest direction towards Donegal Town with the next crossing some two kilometres (1.2 miles) down stream at what is called Thrushbank Bridge; it continues southwestwards and is crossed by the N56 section of the Donegal Town By-pass by a new concrete bridge.

From this new bridge it heads southwards were the smaller Drummenny River joins it before it heads westwards into the town, flowing past the Community Hospital. The river flows through three bridges in the actual town: the first and newest of the bridges is at Water Street, there have been several bridges at this site since at least the 1830s which included wooden and concrete structures, the current bridge was erected in 2004. From Water Street the Eske flows westwards and is bridged at Tyrconnell Street, this bridge is known as the 'Iron Bridge' for self-explanatory reasons and was constructed in 1895 although drawings show a bridge at the site from earlier in the century, the bridge is being lined up for replacement because of its worsening state. The river finally flows southwards to Bridge Street, this is a three arched bridge originally constructed in between 1835 and 1840 and is now on the Record of Protected Structures as of 2003, this bridge is close to the site of the original crossing of the river. After this final bridge the river meets with the sea, flowing into Donegal Bay.