Grandfalls, village (1990 pop. 583), Ward co., extreme W Texas, in the Pecos R. valley, 38 mi/61 km E of Pecos; 31°20'N 102°50'W. In irrigated region (cotton, pecans, alfalfa; cattle, hogs, goats). Oil and natural gas; mfg. (silica sand processing). Imperial Reservoir to S on opposite side of river.