2021 Map of Tule Dam Spring

About this map

Tule Dam Spring sits at the heart of this high-desert landscape in northern Diamond Valley. The topographic data reveals a region defined by water scarcity and historical transit, where Sulphur Spring and Tule Marsh offer rare breaks in the arid terrain. The map traces the historic path of the Pony Express Trl, which cuts across the valley floor, south of the spring. Access through the surrounding highlands is marked by notable geological breaks such as Mulligan Gap and Tyrone Gap. Followed by the winding Saddler Brown Rd, these passes serve as the primary conduits through the hills. Modern hydrography including Garden Pass Cr provides detail for those studying the natural drainage patterns that have dictated local land use and travel routes since the early days of western expansion.