1990 Map of Mormon Basin

About this map

Pedro Mountain dominates the central terrain of this survey along the border of Baker and Malheur counties. The landscape is defined by an extensive history of resource extraction, concentrated heavily within Mormon Basin. This area is marked by numerous Prospect and Prospects labels, alongside established operations like the Sunday Hill Mine, Overshot Group Mine, and Humboldt Mine. The settlement pattern suggests the fading of once-active mining camps, with Miller (Site) and Amelia (Site) noted as former locations near the basin floor. Drainage systems including Dixie Creek and its various forks, such as South Fork Dixie Creek, have carved deep gulches like French Gulch and Emigrant Gulch, which likely served as the primary routes for early miners and settlers moving through this high-elevation mining district.