1940s Maps of San Miguel County, Colorado
Explore 12 historic maps of San Miguel County from the 1940s. These maps offer a rare glimpse into what life looked like during the 1940s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.
Whether you're researching your family's past, planning a metal detecting trip, or studying how San Miguel County's landscape evolved across the 1940s, these high-resolution maps are a powerful tool for exploring the history of this region.
- Focus on a specific era: All maps on this page are from the 1940s, giving you a focused view of this time period.
- See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
- Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
- View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.
Start exploring San Miguel County's history through authentic maps from the 1940s. This is your window into the past.
San Miguel County, CO maps
(12)- 1945 Map of Durango
1945 Durango1945 Print · USGSSouthwest Colorado and Northern New Mexico at mid-century are defined by the high peaks of the San Juan Range and the tribal lands of the Southern Ute. Genealogists and historians can trace the paths of the D & R G W RR and locate local landmarks like Animas City and the Blanco Basin School.3 unique versions available - 1948 Map of Bull Canyon, 1955 Print
1948 Bull Canyon1955 Print · USGSWestern Colorado's high desert mining country is captured here just as the atomic age spurred new interest in the Plateau's mineral wealth. Researchers can locate remote extraction sites like Wild Steer Mines and Jo Dandy Mine or trace the early Monogram Trail. - 1948 Map of Horse Range Mesa, 1955 Print
1948 Horse Range Mesa1955 Print · USGSSan Miguel County became a focal point of the Cold War uranium boom during the late 1940s as industry moved into this canyon landscape. Researchers can locate specific mining operations like the Veta Mad Mine, Radium No 5 Mine, and the Slick Rock Water Tower near the river. - 1948 Map of Hamm Canyon, 1955 Print
1948 Hamm Canyon1955 Print · USGSSan Miguel County, Colorado, is captured here in the late 1940s during a period of renewed geological interest in the plateau's mineral resources. Researchers can trace the rugged drainage of the Dolores River and locate historic mining sites like Mexico Mines or the Lookout Mine. - 1948 Map of Naturita NW, 1957 Print
1948 Naturita NW1957 Print · USGSWestern Colorado mining and ranching lands are captured here just after the war, showing the stark divide between the Paradox Valley floor and the surrounding heights. Researchers can trace mid-century industrial sites like the Thunderbolt Mine or locate water sources such as Spectacle Reservoir.4 unique versions available - 1948 Map of Gypsum Gap, 1957 Print
1948 Gypsum Gap1957 Print · USGSWestern San Miguel County is shown during a period of intense mineral exploration in the late 1940s. Researchers can trace the early footprints of the local uranium boom through landmarks like the Long Ridge Mines, Bald Eagle Mines, and Larson Spring.4 unique versions available - 1949 Map of Bull Canyon
1949 Bull Canyon1949 Print · USGSThe Colorado uranium belt comes into focus during the late 1940s as industry and exploration transform this high-mesa landscape. Researchers can trace early mining operations like the Wild Steer Mines and Rim Rock Mine alongside remote sites like Indian Henrys Cabin.2 unique versions available - 1949 Map of Gypsum Gap
1949 Gypsum Gap1949 Print · USGSSan Miguel County in the late 1940s reflects the height of post-war mineral exploration under the Atomic Energy Commission. Researchers can trace early uranium-era activity at the Long Ridge Mines, Bald Eagle Mines, and the passage through Gypsum Gap.2 unique versions available - 1949 Map of Naturita NW
1949 Naturita NW1949 Print · USGSThe Paradox Valley and Monogram Mesa are captured here in the late 1940s as regional mining intensified. Researchers can locate the Thunderbolt Mine and trace the complex drainages of Dry Creek and West Fork Basin Creek.2 unique versions available - 1949 Map of Egnar
1949 Egnar1949 Print · USGSThe mining landscape near the Colorado-Utah border is detailed in this late 1940s survey. Researchers can trace numerous early claims like the Effie B Mine and Golden Rod Mines alongside local landmarks like the Egnar School.4 unique versions available - 1949 Map of Anderson Mesa, 1955 Print
1949 Anderson Mesa1955 Print · USGSThe high mesas of western Colorado are documented here in the late 1940s as mineral exploration began to peak. Researchers can trace early uranium mining efforts at Morning Star Mine and The Raven Mine or follow the loops of the Dolores River past Muleshoe Bend.2 unique versions available - 1949 Map of Joe Davis Hill, 1957 Print
1949 Joe Davis Hill1957 Print · USGSSan Miguel and Dolores counties at the height of the mid-century uranium boom. Mineral hunters can trace the locations of the Norma Jean Mine and Mucho Grande Mine, or locate the site of Spud Patch Camp along the Dolores River.5 unique versions available
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