santa rosalía de camargo, originally called santa rosalía, and now known as "ciudad camargo" (camargo city), is a city in the eastern part of the mexican state of chihuahua, located at the confluence of the rio parral and the rio conchos in the allende valley. it serves as the municipal seat of camargo municipality and also serves as an important agricultural and livestock center for the area. ciudad camargo was originally founded in 1740 and refounded in 1792.