This catchment is west of the village of Dunleer, in Co. Louth (also known as the "Wee County"). It is just over 940ha in area and approximately 50% of the land is in grass with about 33% tillage and the balance in woodland and other uses.
Winter wheat and potatoes are the main tillage enterprise in the catchment while the grassland is mainly used for dairying and beef production. It is representative of much of the heavier land used for tillage in the north-east of Ireland. 70% of the catchment is poorly drained and as a result phosphorus is the main nutrient at risk of loss from this site through overland flow. There is a much smaller risk of nitrogen loss through leaching on the more freely drained soils mainly in the east of the catchment.