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Old Maps of Calhoun, Colorado for Metal Detecting

Plan your next treasure hunt with 9 historic maps of Calhoun. 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 Calhoun.

Calhoun, CO maps

(9)
  1. 1954 Map of Sterling
    1954 Map of Sterling
    1954 Sterling
    1954 Print · USGS
    Northeastern Colorado and the Nebraska borderlands are defined by the river-and-rail corridors of the mid-twentieth century. Researchers can trace the development of agricultural hubs from Sterling and Fort Morgan to smaller rail stops along the Union Pacific and Burlington Northern lines.
    3 unique versions available
  4. 1958 Map of Sterling
    1958 Map of Sterling
    1958 Sterling
    1958 Print · USGS
    Northeastern Colorado thrived along the river and rail corridors during the late fifties. Genealogists and historians can trace family-named irrigation works like Davis Brothers Ditch and agricultural hubs from Peetz to Fort Morgan.
  7. 1972 Map of Otis, 1975 Print
    1972 Map of Otis, 1975 Print
    1972 Otis
    1975 Print · USGS
    The town of Otis is captured in the early 1970s, showing a prairie landscape shaped by the rail line and dryland infrastructure. Genealogists and researchers can trace the town layout including the High Sch, Cem, and the nearby Calhoun siding.
    3 unique versions available
  10. 1981 Map of Wray, 1982 Print
    1981 Map of Wray, 1982 Print
    1981 Wray
    1982 Print · USGS
    The high plains at the meeting of Colorado, Nebraska, and Kansas are documented here in the early 1980s. Local researchers can trace the Burlington Northern rail corridor and locate rural landmarks like Lone Star, Glocken Hill, and Dearing Lake.
  13. 2010 Map of Otis, 2010 Print
    2010 Map of Otis, 2010 Print
    2010 Otis
    2010 Print · USGS
    Covers Calhoun, including Otis, Washington County, and other nearby areas
  16. 2013 Map of Otis, 2013 Print
    2013 Map of Otis, 2013 Print
    2013 Otis
    2013 Print · USGS
    Covers Calhoun, including Otis, Washington County, and other nearby areas
  19. 2016 Map of Otis, 2016 Print
    2016 Map of Otis, 2016 Print
    2016 Otis
    2016 Print · USGS
    Covers Calhoun, including Otis, Washington County, and other nearby areas
  22. 2019 Map of Otis, 2019 Print
    2019 Map of Otis, 2019 Print
    2019 Otis
    2019 Print · USGS
    Covers Calhoun, including Otis, Washington County, and other nearby areas
  25. 2022 Map of Otis, 2022 Print
    2022 Map of Otis, 2022 Print
    2022 Otis
    2022 Print · USGS
    The town of Otis and its surrounding agricultural grid appear in modern detail on this 2022 survey of Washington County. Local researchers can trace family sites near Otis Cem, explore the streets of Otis, or follow the course of Surveyor Creek through the plains.
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Showing maps 1-9 of 9

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