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Old Maps of San Luis, Arizona for Metal Detecting

Plan your next treasure hunt with 20 historic maps of San Luis. 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 San Luis.

San Luis, AZ maps

(20)
  1. 1903 Map of Yuma, 1954 Print
    1903 Map of Yuma, 1954 Print
    1903 Yuma
    1954 Print · USGS
    The desert frontier around Yuma comes alive in this survey from the early 1900s, capturing the arrival of major irrigation and rail infrastructure. Genealogists and historians can trace the foundations of the Yuma Indian Reservation, the early layout of Somerton, and remote mining sites like the Picacho Mine.
    2 unique versions available
  4. 1905 Map of Yuma
    1905 Map of Yuma
    1905 Yuma
    1905 Print · USGS
    The Lower Colorado River borderlands come alive in the early 1900s, showing the early infrastructure of the Imperial Valley and the Yuma crossing. Genealogists and historians can trace the foundations of Somerton, the Yuma Indian Reservation, and remote desert mining camps like Hedges and Picacho Mine.
    5 unique versions available
  7. 1940 Map of Yuma, 1956 Print
    1940 Map of Yuma, 1956 Print
    1940 Yuma
    1956 Print · USGS
    Yuma and the surrounding desert irrigation districts are captured here at the start of the 1940s as the river economy matured. Genealogists and local historians can trace the foundations of Somerton, the Indian Sch, and family-named schools like Crane Sch.
    3 unique versions available
  10. 1942 Map of Yuma
    1942 Map of Yuma
    1942 Yuma
    1942 Print · USGS
    The desert frontier near Yuma underwent a massive transformation during the early war years as irrigation and military infrastructure expanded. Researchers can trace the development of the All American Canal Project and locate numerous historic workings like the Fortuna Mine and Old Senator Mine.
  13. 1945 Map of Yuma
    1945 Map of Yuma
    1945 Yuma
    1945 Print · USGS
    The desert crossroads at Yuma come alive in this wartime-era survey, revealing the complex irrigation and rail networks that fueled the border economy. Genealogists and historians can locate early landmarks like Indian School Watertank, Crane Sch, and Yuma Cem.
  16. 1954 Map of El Centro
    1954 Map of El Centro
    1954 El Centro
    1954 Print · USGS
    The Imperial Valley was at its mid-century agricultural peak when this survey recorded its vast irrigation network and desert borderlands. Researchers can trace the path of the All American Canal or locate local landmarks like Lantana School and the Tumco Mines.
  19. 1955 Map of El Centro
    1955 Map of El Centro
    1955 El Centro
    1955 Print · USGS
    The Imperial Valley and the Colorado River borderlands are captured here in the mid-fifties during the peak of the region's irrigation-driven expansion. Researchers can trace the desert's industrial history through the Tumco Mines, the Yuma Test Branch, and rural landmarks like the Palmetto School.
  22. 1958 Map of El Centro, 1972 Print
    1958 Map of El Centro, 1972 Print
    1958 El Centro
    1972 Print · USGS
    The Imperial Valley's agricultural heartland and the Colorado River's edge are captured here during a period of massive water infrastructure and military expansion. Genealogists and historians can trace old mining sites like the Ferguson Mine, desert outposts such as Ogilby, and early rail lines including the San Diego and Arizona Eastern.
    4 unique versions available
  25. 1961 Map of El Centro
    1961 Map of El Centro
    1961 El Centro
    1961 Print · USGS
    The California-Arizona borderlands come alive in this early sixties record of desert irrigation and military expansion. Genealogists and researchers can trace the engineering of the All American Canal and locate vanished sites like Araz and the Imperial County Tuberculosis Sanatorium.
  28. 1964 Map of El Centro
    1964 Map of El Centro
    1964 El Centro
    1964 Print · USGS
    The agricultural heart of the California desert and the military test ranges of Arizona are revealed in this mid-century study. Genealogists and historians can trace the paths of the Southern Pacific railroad and the All American Canal near El Centro and Yuma.
  31. 1964 Map of South of Yuma, 1966 Print
    1964 Map of South of Yuma, 1966 Print
    1964 South of Yuma
    1966 Print · USGS
    The international border in the mid-1960s reveals a sparse landscape defined by the Yuma Desert. Researchers can trace the United States-Mexico line past several Test Wells and the edge of the Luke Air Force Range.
  34. 1965 Map of Somerton, 1966 Print
    1965 Map of Somerton, 1966 Print
    1965 Somerton
    1966 Print · USGS
    In the mid-1960s, the irrigation grid surrounding Somerton transformed the arid valley into a productive agricultural landscape. Researchers can trace the layout of Yuma Indian Homesteads and find early aviation sites like Somerton Airport.
    2 unique versions available
  37. 1965 Map of Gadsden, 1966 Print
    1965 Map of Gadsden, 1966 Print
    1965 Gadsden
    1966 Print · USGS
    The Arizona-Mexico borderlands come into sharp focus in the mid-1960s, showing a landscape defined by the Colorado River and complex irrigation. Genealogists and historians can trace the development of Gadsden and San Luis alongside the Southern Pacific and South Main Canal.
    2 unique versions available
  40. 1980 Map of Tinajas Altas Mts
    1980 Map of Tinajas Altas Mts
    1980 Tinajas Altas Mts
    1980 Print · USGS
    The Arizona-Sonora borderlands come into focus in the early eighties, showing a landscape shaped by military use and extreme desert terrain. Researchers can trace the Jeep Trail through the Tinajas Altas Mountains or locate the Smith Mine and San Luis Landing Field.
    2 unique versions available
  43. 1990 Map of South of Somerton, 1991 Print
    1990 Map of South of Somerton, 1991 Print
    1990 South of Somerton
    1991 Print · USGS
    The Arizona-Sonora borderlands come into focus at the start of the 1990s as agriculture and industry meet the desert. Researchers can trace the development of San Luis Rio Colorado, the Yuma State Prison, and the irrigation of the Distrito de Riego Numero Catorce.
  46. 1993 Map of Yuma
    1993 Map of Yuma
    1993 Yuma
    1993 Print · USGS
    Yuma and the lower Colorado River valley are documented here in the early nineties, showing a landscape defined by massive desert irrigation and military ranges. Trace the rail-and-water economy through the Southern Pacific line and sites like Imperial Dam or the Fortuna Mine.
    2 unique versions available
  49. 2021 Map of Somerton, 2021 Print
    2021 Map of Somerton, 2021 Print
    2021 Somerton
    2021 Print · USGS
    Arizona's agricultural heartland south of Yuma is captured here in the early twenty-first century. Researchers can trace the network of irrigation laterals like Somerton Canal and locate residential developments including Rancho Mesa Verde and Yuma Indian Homesteads.
  52. 2021 Map of Gadsden, 2021 Print
    2021 Map of Gadsden, 2021 Print
    2021 Gadsden
    2021 Print · USGS
    The Arizona-Mexico border comes into focus in this recent survey of the southern Yuma Valley. Researchers can trace the sophisticated irrigation network that supports Gadsden and San Luis, including the Noe Canal and Horn Lateral.
  55. 2021 Map of Gadsden OE S, 2021 Print
    2021 Map of Gadsden OE S, 2021 Print
    2021 Gadsden OE S
    2021 Print · USGS
    The Arizona-Mexico border at the southern tip of the Yuma Valley is captured here during its recent period of expansion. Genealogists and historians can trace the detailed street grid of San Luis, including Cesar Chavez St and Urtuzuastegui St.
  58. 2021 Map of South of Somerton, 2021 Print
    2021 Map of South of Somerton, 2021 Print
    2021 South of Somerton
    2021 Print · USGS
    The Arizona borderlands near the Mexican frontier are captured here in the early twenty-first century as the desert landscape meets expanding development. Trace the intersection of international geography and local growth along Border Rd and through the streets of San Luis.
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