Old Maps of Lake Nacimiento, California for Metal Detecting

Plan your next treasure hunt with 24 historic maps of Lake Nacimiento. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Lake Nacimiento.


Lake Nacimiento, CA maps

(24)
  1. 1919 Map of Bradley
    1919 Map of Bradley
    1919 Bradley
    1919 Print · USGS
    The Salinas River valley comes alive in the late 1910s, showing the early railroad era in Monterey County. Genealogists can trace family-named sites like Williams Ranch and schools like Hames Valley School or Nacimiento School.
    4 unique versions available

  2. 1919 Map of Adelaida
    1919 Map of Adelaida
    1919 Adelaida
    1919 Print · USGS
    San Luis Obispo County’s interior ridges are mapped here shortly after the Great War, showing a landscape of small ranches and rural schools. Genealogists can trace family connections to landmarks like Adelaida, the German Church, and the Williams Ranch.
    2 unique versions available

  3. 1932 Map of Adelaida
    1932 Map of Adelaida
    1932 Adelaida
    1932 Print · USGS
    San Luis Obispo County’s interior highlands appear here between the world wars, showing a landscape of remote mountain ranches and creek-side settlements. Genealogists can trace early homesteads near the German Church or locate rural schoolhouses like Lincoln School and Asuncion School.
    2 unique versions available

  4. 1941 Map of Bradley
    1941 Map of Bradley
    1941 Bradley
    1941 Print · USGS
    Coastal California ranching and rail life are recorded here during the early years of the war. Genealogists and local historians can locate early homesteads and schoolhouses like Hames School or trace the Southern Pacific Coast Line through Bradley.

  5. 1942 Map of Adelaida
    1942 Map of Adelaida
    1942 Adelaida
    1942 Print · USGS
    The Santa Lucia Range was still a rugged frontier of ranching and quicksilver mining in the early 1940s. Genealogists can trace family holdings like Kentucky Ranch and old rural schoolhouses including Summit School and Asuncion School.

  6. 1947 Map of San Luis Obispo, 1948 Print
    1947 Map of San Luis Obispo, 1948 Print
    1947 San Luis Obispo
    1948 Print · USGS
    Coastal California at the dawn of the Cold War reveals a landscape of massive military reservations and quiet seaside towns. Genealogists and researchers can trace the Southern Pacific rail line, old mining sites like Los Burros Mine, and local landmarks from Point Buchon to the Carrizo Plain.

  7. 1947 Map of Adelaida, 1957 Print
    1947 Map of Adelaida, 1957 Print
    1947 Adelaida
    1957 Print · USGS
    The Santa Lucia Range of San Luis Obispo County was a landscape of remote mines and scattered ranching communities shortly after the war. Local historians can trace early community hubs like Adelaida, the Klau Mine, and several rural schoolhouses such as Lincoln Sch.
    2 unique versions available

  8. 1948 Map of San Luis Obispo
    1948 Map of San Luis Obispo
    1948 San Luis Obispo
    1948 Print · USGS
    Central Coast life in the late 1940s is centered on the Southern Pacific rail line and expanding military bases. Genealogists can trace early rural life through Union School and local operations like the Klau Mine or Buena Vista Mine.

  9. 1948 Map of Adelaida, 1952 Print
    1948 Map of Adelaida, 1952 Print
    1948 Adelaida
    1952 Print · USGS
    San Luis Obispo County’s rugged ranching interior is captured here in the late forties, just after the war years. Local historians can trace the foundations of the Adelaida community, locating the Lincoln Sch, Adelaida Cem, and the White Ranch homestead.
    8 unique versions available

  10. 1948 Map of Lime Mountain, 1952 Print
    1948 Map of Lime Mountain, 1952 Print
    1948 Lime Mountain
    1952 Print · USGS
    The San Luis Obispo backcountry in the late 1940s is defined here by the steep terrain of the Santa Lucia Range. Researchers can trace the winding Nacimiento River and locate remote outposts like Camp Natoma and the settlement of Klau.
    4 unique versions available

  11. 1948 Map of Bradley, 1957 Print
    1948 Map of Bradley, 1957 Print
    1948 Bradley
    1957 Print · USGS
    Monterey and San Luis Obispo counties come together in the late 1940s as military expansion meets traditional ranching along the Salinas River. Genealogists and historians can trace the transition from rural holdings like Branch Ranch to the borders of Camp Roberts and the Hunter Liggett Military Reservation.
    2 unique versions available

  12. 1949 Map of Tierra Redonda Mountain, 1952 Print
    1949 Map of Tierra Redonda Mountain, 1952 Print
    1949 Tierra Redonda Mountain
    1952 Print · USGS
    The Central Coast ranges of Monterey and San Luis Obispo counties are shown here just after the war, dominated by the Hunter Liggett Military Reservation. Researchers can locate family landmarks like Branch Ranch, the settlement of Pleyto, and the local Cem near the river.
    4 unique versions available

  13. 1949 Map of Bradley, 1953 Print
    1949 Map of Bradley, 1953 Print
    1949 Bradley
    1953 Print · USGS
    Southern Monterey County at the close of the 1940s is defined by its major river junctions and the footprint of the Camp Roberts Military Reservation. Researchers can trace the Southern Pacific rail line through Bradley or locate family sites at Nacimiento Ranch and the local Cem.
    7 unique versions available

  14. 1956 Map of San Luis Obispo, 1963 Print
    1956 Map of San Luis Obispo, 1963 Print
    1956 San Luis Obispo
    1963 Print · USGS
    Central California coastal and valley life unfolds in the mid-fifties, from the shoreline of Pismo Beach to the arid Carrizo Plain. Trace early travel routes along the Southern Pacific RR or locate family sites near the Templeton Cemetery and Paso Robles County Cemetery.
    5 unique versions available

  15. 1957 Map of San Luis Obispo
    1957 Map of San Luis Obispo
    1957 San Luis Obispo
    1957 Print · USGS
    Coastal California in the late fifties is defined by the steep Santa Lucia Range and the rail-connected hub of San Luis Obispo. Genealogists and researchers can trace rural life via Union School, the Southern Pacific line, and old sites like the Polar Star Mine.

  16. 1958 Map of San Luis Obispo
    1958 Map of San Luis Obispo
    1958 San Luis Obispo
    1958 Print · USGS
    The Central Coast in the late fifties reveals a landscape of ranching and early tourism before the massive expansion of the modern era. Trace the path of the Southern Pacific through Atascadero or locate family roots in coastal towns like Cayucos and Cambria.

  17. 1961 Map of Bradley, 1968 Print
    1961 Map of Bradley, 1968 Print
    1961 Bradley
    1968 Print · USGS
    Monterey County in the early sixties is a landscape defined by the intersection of military training grounds, oil extraction, and ranching life. Researchers can trace the path of the Southern Pacific Railroad through Bradley or locate family sites near Pleyto and Hames Valley Hall.
    2 unique versions available

  18. 1961 Map of Adelaida, 1968 Print
    1961 Map of Adelaida, 1968 Print
    1961 Adelaida
    1968 Print · USGS
    Coastal California ranching and mining culture are preserved here in the early sixties as the Nacimiento Reservoir area developed. Researchers can locate local landmarks like the Adelaida Sch, the Klau Mine, and several historic family holdings including Kentucky Ranch.

  19. 1976 Map of Bradley
    1976 Map of Bradley
    1976 Bradley
    1976 Print · USGS
    The Salinas River valley in the mid-1970s shows a complex landscape of oil extraction, military training, and massive reservoirs. Researchers can trace the legacy of the Southern Pacific railroad, the rural Hames Valley Hall, and the vast Camp Roberts Military Reservation.

  20. 1989 Map of Paso Robles
    1989 Map of Paso Robles
    1989 Paso Robles
    1989 Print · USGS
    Coastal mountains and the Salinas River valley meet in the late eighties as this region balances military installations and agriculture. Genealogists and historians can trace the Southern Pacific line through Paso Robles and Templeton or locate the Klau Mine and San Miguel.

  21. 2021 Map of Bradley, 2021 Print
    2021 Map of Bradley, 2021 Print
    2021 Bradley
    2021 Print · USGS
    The community of Bradley sits at the vital junction of the Salinas River and its major tributaries during the early 2020s. Trace the intricate canyons of Portuguese Canyon and Sulphur Canyon or follow the county line separating Monterey Co and San Luis Obispo Co.

  22. 2021 Map of Adelaida, 2021 Print
    2021 Map of Adelaida, 2021 Print
    2021 Adelaida
    2021 Print · USGS
    The ranching and vineyard country of San Luis Obispo County is captured here in the early 2020s. Researchers can locate family landmarks like the Adelaida Cem, the Halter Ranch Airport, and the winding course of San Marcos Cr.

  23. 2021 Map of Tierra Redonda Mountain, 2021 Print
    2021 Map of Tierra Redonda Mountain, 2021 Print
    2021 Tierra Redonda Mountain
    2021 Print · USGS
    The California lakeside communities of Monterey and San Luis Obispo counties are shown here as they appeared in the early 2020s. Researchers can trace the residential development of Oak Shores and the geographic character of Bee Rock and Tierra Redonda Mtn.

  24. 2021 Map of Lime Mountain, 2021 Print
    2021 Map of Lime Mountain, 2021 Print
    2021 Lime Mountain
    2021 Print · USGS
    The rugged Santa Lucia foothills and the winding shores of the reservoir define this area in the early 2020s. Researchers can trace the layout of the Klau settlement and the complex drainages of Las Tablas Cr and Franklin Cr.

End of results
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