These mills typically harnessed the flow of a local stream or river to turn a millstone, grinding oats or wheat into meal for the surrounding community. For centuries they formed a quiet but essential part of rural economic life, and their remains, where they survive, often amount to little more than a ruined millrace, a fragment of dressed stonework, or a depression in a field that once held the wheel pit.

The mill at Keeloge is noted as a monument of archaeological interest, though detailed records about its construction, operation, or the families connected with it remain limited in what is publicly available at present. What can be said is that Galway's agricultural landscape supported numerous such mills from the medieval period onward, many of them rebuilt or adapted across successive centuries as grain-growing patterns shifted and estate economies evolved. The survival of a mill site in a small townland like Keeloge points to the kind of local, workaday infrastructure that rarely made it into formal histories but shaped the daily rhythms of rural parishes nonetheless.