1967 Map of Tar Spring Ridge
USGS Topo · Published 1977About this map
Lake Lopez and the Lopez Dam dominate this landscape during a period of significant hydrological change in San Luis Obispo County. Surveyed in the mid-1960s, the map documents the reservoir's footprint while noting portions as under construction, capturing the transition of the Arroyo Grande drainage. The rugged interior is defined by Tar Spring Ridge and the southern reaches of the Los Padres National Forest, where steep canyons like Clapboard Canyon and Canyon de los Alisos cut through the Huasna region.
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Map Details
Editions of this 1967 Tar Spring Ridge Map
2 editions found
Other maps of this area
1897 · San Luis Obispo
USGS Topo · 1:62,500
1897 · Arroyo Grande
USGS Topo · 1:62,500
1900 · San Luis
USGS Topo · 1:125,000
1922 · Pozo
USGS Topo · 1:62,500
1922 · Nipomo
USGS Topo · 1:62,500
1942 · San Luis Obispo
USGS Topo · 1:62,500
1942 · Arroyo Grande
USGS Topo · 1:62,500
1947 · San Luis Obispo
USGS Topo · 1:250,000
1948 · San Luis Obispo
USGS Topo · 1:250,000
1952 · Arroyo Grande
USGS Topo · 1:62,500