An enclosure, most likely the remains of an early settlement boundary or farmstead perimeter, was recorded on the Ordnance Survey six-inch map of 1842, drawn in the characteristic semicircular form that field surveyors of that era used to mark earthworks they could still, at least partially, observe. Today, the ground where it once stood shows nothing at all.

The 1842 Ordnance Survey mapping of Ireland was a remarkable undertaking, producing detailed topographic records at a scale that captured not just roads and field boundaries but the humps, banks, and ditches of older, more ambiguous features. The semicircular outline noted at Waters-Land, sitting on a south-facing garden slope, was almost certainly an earthen enclosure of the kind commonly associated with early medieval settlement in Munster, where circular or roughly circular banks defined a domestic space and offered a degree of enclosure for both people and animals. That the surveyors could see enough in 1842 to draw it, but that nothing now remains above ground, suggests gradual levelling through cultivation, landscaping, or the simple passage of time and use in a garden setting.