Lough Owel (Irish: Loch Úll) is a mesotrophic lough in the Midlands of Ireland, situated north of Mullingar, the county town of Westmeath. It has a maximum depth of 22m. Water from Lough Owel feeds the Royal Canal, a canal crossing Ireland from Dublin to the River Shannon. Access to the lake can be gained from a carpark and pier to the south of the N4 Mullingar to Longford route. The Viking chieftain Turgesius was drowned in Lough Owel by Máel Sechnaill mac Maíl Ruanaid in 845.