Painted Rock Mountains Painted Rock Mountains The Painted Rocks Mountains are a short 15-mile (24 km) long mountain range of the north-central Sonoran Desert southwest of Phoenix, Arizona and in southwest Maricopa County. The Gila River flows through the central-north end of the range. The famous Painted Rock Petroglyph Site lies at the northeast end of the range, adjacent the Painted Rock Reservoir, and the reservoir lies at the eastern end of the agricultural river valley that is locally names as the Lower Gila River Valley, extending approximately from the Colorado River at Yuma to the west and the reservoir at the east.
Colorado Desert pressures, most notably the Coachella Valley. Colorado Desert California's Colorado Desert is a part of the larger Sonoran Desert. It encompasses approximately , including the heavily irrigated Coachella and Imperial valleys. It is home to many unique flora and fauna. The Colorado Desert is a subdivision of the larger Sonoran Desert encompassing approximately The desert encompasses Imperial County and includes parts of San Diego County, Riverside County, and a small part of San Bernardino County. Most of the Colorado Desert lies at a relatively low elevation, below , with the lowest point of the desert floor at below sea level