1936 Map of Warm Spring

About this map

Angeles National Forest dominates this mid-1930s landscape, where a dense network of canyons and firebreaks reveals the early 20th-century approach to mountain management. Topography by W. R. Chenoweth highlights the steep drainage systems of Elizabeth Lake Canyon and Warm Spring Canyon, which carve through the high terrain of the Sawtooth Mountains. The presence of the San Andreas Rift Zone along the northern edge underscores the geological instability of the region, a factor that influenced early road placement and water resource management.