Lough Sheelin lies on the early course of the River Inny, a major tributary of the Shannon; its inflow is sometimes known as the Upper Inny or the Ross River, while the outflow is known as the Lower Inny.
The lake is a part of the River Inny course, and ultimately of the Shannon system. This article is about the river tributary of the River Shannon in Ireland. The inflow is sometimes known as the Upper Inny or the Ross River, and the outflow as the Lower Inny. 
