
Huasna Valley serves as the central artery of this Central Coast landscape, where the confluence of the Huasna River and Alamo Creek meet the Twitchell Reservoir. The map documents a mid-century period of rural land use, dominated by large family holdings such as the Porter Ranch, Oakley Ranch, and Swickard Ranch. The rugged eastern portion of the sheet is defined by the Los Padres National Forest, a network of canyons including Haystack Canyon and Stephens Canyon punctuated by the Deer Trail Mine. To the south, the county line between San Luis Obispo and Santa Barbara counties cuts across the Cuyama River near Vaquero Flat. The prevalence of gaging stations and land subject to controlled inundation reflects the era's focus on water management and reservoir development in the semi-arid canyon country.
31 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
2 editions found
1905 · Lompoc
USGS Topo · 1:125,000
1922 · Nipomo
USGS Topo · 1:62,500
1937 · Branch Mtn
USGS Topo · 1:48,000
1942 · Lompoc
USGS Topo · 1:125,000
1942 · Santa Maria
USGS Topo · 1:62,500
1942 · Branch Mountain
USGS Topo · 1:62,500
1942 · Tepusquet Peak
USGS Topo · 1:62,500
1943 · Tepusquet Peak
USGS Topo · 1:62,500
1943 · Lompoc
USGS Topo · 1:125,000
1947 · Los Coches Mtn
USGS Topo · 1:24,000