2015 Map of Altamont

About this map

Altamont Pass and Patterson Pass dominate this eastern edge of the Livermore Valley, where the terrain transitions into the high ridges of the Diablo Range. The map details a sophisticated network of water infrastructure, most notably the S Bay Aqueduct, which winds across the landscape alongside seasonal drainages like Arroyo Seco and Dry Cr. This area is defined by its strategic corridors, where roads and railways follow the natural gaps in the hills that have long connected the valley to the San Joaquin delta region. Smaller residential clusters such as Trevarno and Ulmar appear on the outskirts of Livermore, while established landmarks like Lone Hill and the seasonal Frick Lake serve as distinct topographic markers. To the south, the map rises toward Crane Ridge, illustrating the complex relief of the backcountry south of Tesla Road.