Corlust Lough is labelled 8 on the map.

The lake was described twice in 1838 in the Ordnance Survey Memoirs:

"...a lake situated 2 miles west of the village of Acton, in the townlands of Corlust and Ballyargan and Crewbeg [in the parish of Ballymore], elevated 258 feet above the level of the sea, extreme length from north to south 418 yards, extreme breadth from east to west 285 yards..."

"[Corlust Lough] in the north west side of Crubeg at its junction with Ballyargin and Curlusk contains about 14 and a half acres."