2015 Map of Big Maria Mountains SW

About this map

Big Maria Mountains dominate the landscape in this 2015 survey of Riverside County, California. The terrain transitions from the steep, contoured slopes of the range into the expansive alluvial plains to the southwest. A prominent landmark, Black Hill, rises from the desert floor, serving as a distinct topographical marker between the mountain front and the valley below. Following the natural gradient of the land, Midland Rd cuts through the southwestern corner, providing the primary arterial access through the region. This topographic study, produced by the U.S. Geological Survey, meticulously details the elevation changes and land partitions of the area, offering a precise view of the Colorado Desert's geography before recent shifts in land use or infrastructure.