The Salinas River corridor defines the western edge of this landscape, where the settlement of San Miguel sits at the junction of modern infrastructure and the valley's drainage system. The area is characterized by a network of significant canyons, including Vineyard Canyon and Mahoney Canyon, which channel seasonal water from the eastern uplands toward the river. Transportation is anchored by the corridor of Us-101 S, which follows the historical path through McKay and past the agricultural flats of Indian Valley. Smaller settlements like Nacimiento are positioned near the river, while a system of rural roads such as Indian Valley Rd and Cross Canyons Rd provides access to the dissected terrain of Portuguese Canyon and Deer Canyon. The map reveals the relationship between the valley floor's development and the complex hydrography of creeks like Big Sandy Cr and San Jacinto Cr.
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This is the sole edition of this map. No revisions or reprints were ever made.
1919 · San Miguel
USGS Topo · 1:62,500
1919 · Paso Robles
USGS Topo · 1:62,500
1919 · Bradley
USGS Topo · 1:62,500
1919 · Adelaida
USGS Topo · 1:62,500
1932 · Adelaida
USGS Topo · 1:62,500
1941 · Bradley
USGS Topo · 1:62,500
1942 · Adelaida
USGS Topo · 1:62,500
1943 · Paso Robles
USGS Topo · 1:62,500
1947 · San Luis Obispo
USGS Topo · 1:250,000
1947 · San Miguel
USGS Topo · 1:62,500