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Old Maps of Helena, California for Metal Detecting

Plan your next treasure hunt with 12 historic maps of Helena. 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 Helena.

Helena, CA maps

(12)
  1. 1909 Map of Big Bar
    1909 Map of Big Bar
    1909 Big Bar
    1909 Print · USGS
    Trinity County at the turn of the century shows a land defined by deep river canyons and remote mountain settlements. Genealogists and local historians can trace early footprints at Hyampom and Hayfork, or locate the high ridges of Barker Mtn and Thompson Peak.
    2 unique versions available
  4. 1915 Map of Big Bar and Vicinity
    1915 Map of Big Bar and Vicinity
    1915 Big Bar and Vicinity
    1915 Print · USGS
    The Trinity River wilderness in the early twentieth century was a landscape of isolated mining outposts and river settlements. Genealogists and historians can trace the early footprints of Junction City, Helena, and Hyampom alongside remote landmarks like Keystone Cabin.
    5 unique versions available
  7. 1951 Map of Helena, 1953 Print
    1951 Map of Helena, 1953 Print
    1951 Helena
    1953 Print · USGS
    Trinity County’s rugged mining country is captured here in the early fifties, detailing the transition from active extraction to national forest management. Researchers can locate remote camps and historic gold operations like the Enterprise Mine, Dedrick, and Canyon City.
    5 unique versions available
  10. 1958 Map of Redding
    1958 Map of Redding
    1958 Redding
    1958 Print · USGS
    Northern California's valley and mountain landscapes are captured in the late fifties, showing the region as new reservoirs reshaped the river systems. Genealogists and historians can trace rail-side towns like Cottonwood, the military presence at Red Bluff Air Force Station, and mountain outposts like Weaverville.
    5 unique versions available
  13. 1982 Map of Helena
    1982 Map of Helena
    1982 Helena
    1982 Print · USGS
    Trinity County’s gold and ranching history is preserved in this early 1980s survey of the river forks and mountain ridges. Researchers can locate former settlements at Coleridge (Site) and Long Ranch (Site) or trace mining operations like the Yellowstone Mine.
  16. 1982 Map of Hayfork, 1983 Print
    1982 Map of Hayfork, 1983 Print
    1982 Hayfork
    1983 Print · USGS
    Trinity and Humboldt counties appear here in the early eighties as a landscape of timber and mining. Researchers can trace remote river settlements like Hyampom and Burnt Ranch or locate old operations such as the Yellowstone Mine and Index Mine.
  19. 1998 Map of Helena, 2003 Print
    1998 Map of Helena, 2003 Print
    1998 Helena
    2003 Print · USGS
    Trinity County’s mountainous terrain is documented here in the late twentieth century as the region transitioned from its mining roots to managed wilderness. Researchers can locate the Yellowstone Mine, trace the Trinity River corridor, and identify former habitation at Coleridge (Site) and Long Ranch (Site).
  22. 2012 Map of Helena, 2012 Print
    2012 Map of Helena, 2012 Print
    2012 Helena
    2012 Print · USGS
    Covers Helena, including Trinity County, United States, and other nearby areas
  25. 2015 Map of Helena, 2015 Print
    2015 Map of Helena, 2015 Print
    2015 Helena
    2015 Print · USGS
    Covers Helena, including Trinity County, United States, and other nearby areas
  28. 2018 Map of Helena, 2018 Print
    2018 Map of Helena, 2018 Print
    2018 Helena
    2018 Print · USGS
    Covers Helena, including Trinity County, United States, and other nearby areas
  31. 2021 Map of Helena, 2021 Print
    2021 Map of Helena, 2021 Print
    2021 Helena
    2021 Print · USGS
    Covers Helena, including Trinity County, United States, and other nearby areas
  34. 2023 Map of Helena, 2023 Print
    2023 Map of Helena, 2023 Print
    2023 Helena
    2023 Print · USGS
    The Trinity River watershed near Helena remains a landscape of steep ridges and wilderness trails in the twenty-first century. Researchers can locate the Helena Cem, trace the Waldorff Crossing Trl, and explore the canyon floor at Junction City.
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