These artificial impoundments were created to store water and release it in a controlled flow onto a mill wheel, providing the mechanical energy that ground grain, fulled cloth, or drove a forge. Where the mill building itself has long since collapsed or been cleared away, the pond often remains, its earthen banks holding water in a shallow hollow that most passers-by take for a natural feature. That is largely the situation here, in this corner of County Galway, where the name of the townland preserves the memory of industry that the ground itself only faintly echoes.

Beyond the fact of its classification as a recorded monument in the county, the specific history of this particular pond, its construction date, the type of mill it served, and the families or concerns that operated it, remains to be fully documented. Milltown as a place-name occurs repeatedly across Ireland, a reliable indicator that milling was once the defining economic activity of a locality, but the details that would distinguish this site from dozens of others with the same name have not yet been set down in any accessible form.