2018 Map of Harrison Mountain

About this map

San Bernardino and Highland sprawl across the southern base of the San Bernardino Mountains, where irrigation and water management infrastructure like the Highland Canal, N Fork Canal, and East Highland Reservoir supported the region's agricultural footprint. To the north, the terrain climbs sharply into the San Bernardino National Forest, revealing a string of mountain communities along the ridgelines. These mountain settlements, including Rimforest, Blue Jay, Skyforest, and Twin Peaks, are connected by a network of winding roads such as Old Toll Rd and Pine Crest Rd. The contrast between the grid-based urban development of Patton and West Highlands and the steep, canyon-cut geography around McKinley Mtn and Harrison Mtn illustrates the geological transition from the valley floor to the high peaks of the San Bernardino Mountains.