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In 1874, a local cooperative built a dam near where the road (now TX 190) to Fort McKavett (SS39) crosses the San Saba River and dug an irrigation canal nearly five miles long into central Menardville. It partially traced the route of the acequia constructed in 1761 for irrigation and to transport stones for the fortification of the Presidio de San Luis de las Amarillas (SS38). A map by engineer Nicolas de la Fora, from 1766, shows the acequia. The “ditch,” as the canal was called, has been in continuous operation ever since; the Menard Chamber of Commerce posts a ditch-watering schedule on its front door.