River Inny (Leinster) River Inny (Leinster) The River Inny (Irish: "An Eithne") is a river within the Shannon River Basin in Ireland. The Inny is 40 miles (64 km) in length It begins as a stream on Patrickstown hill, one of the peaks which form the Loughcrew complex of megalithic tombs, near Oldcastle in County Meath and marks the boundary between Meath and Cavan for about four miles before it enters Lough Sheelin in County Cavan. From Lough Sheelin it forms the boundary between Westmeath and Cavan, and flows under the bridge of Finea into Lough Kinale where counties Cavan and Westmeath meet
County Offaly Mountain which are the county's second and third highest peaks. Croghan Hill rises from the Bog of Allen and is located in northern Offaly. Although only 234 metres high, it is known for its view over the surrounding area and it stands out by itself. The floodplain of the River Shannon is in the north-western part of the county. The River Camcor runs through the town of Birr and is a Wild Trout Conservation Area. The River Brosna runs across the county from Lough Owel in Westmeath to Shannon Harbour. Silver River runs through several towns in the south of