Alcalde (al-KAHL-dai), uninc. village (1990 pop. 308), Rio Arriba co., N N.Mex., on Rio Grande, in San Juan Pueblo land grant, 28 mi/45 km NNW of Santa Fe; 36°04'N 106°03'W. Elev. 5,704 ft/1,739 m. Trading point. Cattle, sheep, chiles, alfalfa. Sangre de Cristo Mts. just E; parts of Santa Fe Natl. Forest to E and W; San Juan Pueblo and San Juan Indian Reservation to S.