Old Maps of Porter, California for Metal Detecting
Plan your next treasure hunt with 16 historic maps of Porter. 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 Porter.
Porter, CA maps
(16)- 1891 Map of Big Trees
1891 Big Trees1891 Print · USGSThe Sierra Nevada high country and gold country are seen here in the 1890s, a period defined by the mining economy and early mountain passage. Historians can trace early routes like the Bloods Toll Road and locate sites such as Sheep Ranch, the Keltz Mine, and Swiss Ranch. - 1894 Map of Big Trees
1894 Big Trees1894 Print · USGSCentral California's high Sierra region is documented here in the 1890s, where river crossings and giant sequoia groves defined the landscape. Researchers can trace old mountain routes through Abbott Ferry and Parrott Ferry or locate early mining sites like the Riverside Mine. - 1897 Map of Big Trees
1897 Big Trees1897 Print · USGSThe Sierra Nevada foothills and deep river canyons of the late nineteenth century are mapped here in detail before modern development. Genealogists and historians can trace early mountain life through landmarks like Bloods Toll, the Riverside Mine, and historic crossings at Abbott Ferry. - 1901 Map of Big Trees
1901 Big Trees1901 Print · USGSThe High Sierra and Gold Country meet in this turn-of-the-century look at the groves and mining camps of the Mokelumne and Stanislaus watersheds. Trace the early boundaries of the Calaveras Grove, locate the Riverside Mine, or find river crossings like Parrott Ferry.9 unique versions available - 1947 Map of Sacramento, 1948 Print
1947 Sacramento1948 Print · USGSThe Sacramento Valley meets the high Sierra during a period of post-war expansion. Trace the historic river delta islands like Grand Island or locate early airfield footprints at McClellan Air Force Base and Mather Air Force Base.2 unique versions available - 1948 Map of Sacramento, 1951 Print
1948 Sacramento1951 Print · USGSPost-war Northern California comes alive in this regional survey, capturing the era of expansion between the Central Valley and the High Sierra. Researchers can trace the rail networks of the Central California Traction and Sacramento Northern RR or locate landmarks like the State Capitol and University of California Davis. - 1956 Map of Sacramento
1956 Sacramento1956 Print · USGSMid-century California unfolds from the delta to the high Sierra, capturing a landscape of growing valley cities and burgeoning military airbases. Genealogists and historians can trace the rail lines and river towns from Woodland to Lodi, or explore the foothill settlements of Placerville and Jackson.2 unique versions available - 1956 Map of Blue Mountain, 1959 Print
1956 Blue Mountain1959 Print · USGSThe High Sierra backcountry of Amador and Calaveras Counties is shown here in the mid-fifties as forestry and recreation began to overlap. Researchers can find deep-woods sites like Hamilton Camp, the Black Wonder Mine, and the historic Swiss Ranch near Arnold.3 unique versions available - 1957 Map of Sacramento, 1966 Print
1957 Sacramento1966 Print · USGSIn the mid-twentieth century, the California heartland was a hub of river transport, rail lines, and military airbases. Genealogists and historians can trace the development of Gold Country towns like Angels Camp and Sonora or follow the path of the Southern Pacific RR through the growing suburbs of Sacramento.4 unique versions available - 1979 Map of Devils Nose
1979 Devils Nose1979 Print · USGSThe Sierra Nevada foothills are captured in the late seventies as a hub of hydroelectric power and timber management. Researchers can trace the water infrastructure from Tiger Creek Reservoir to the Powerhouse, alongside landmarks like Bruce Crossing and Wilson Lake.3 unique versions available - 1993 Map of San Andreas, 1994 Print
1993 San Andreas1994 Print · USGSThe Mother Lode and High Sierra foothills come alive in the 1990s, showcasing a region defined by historic gold mining and massive water projects. Genealogists and historians can locate old mining sites and rural settlements like Volcano, San Andreas, and Mokelumne Hill. - 2001 Map of Devils Nose, 2004 Print
2001 Devils Nose2004 Print · USGSThe Amador and Calaveras county line at the start of the millennium highlights a landscape of high ridges and hydroelectric infrastructure. Researchers can trace the rugged water systems from the Tiger Creek Reservoir to the Mokelumne River, while locating secluded spots like Whitmore Meadow and Boston Flat. - 2012 Map of Devils Nose, 2012 Print
2012 Devils Nose2012 Print · USGSCovers Porter, including Calaveras County, Amador County, and other nearby areas - 2015 Map of Devils Nose, 2015 Print
2015 Devils Nose2015 Print · USGSCovers Porter, including Calaveras County, Amador County, and other nearby areas - 2018 Map of Devils Nose, 2018 Print
2018 Devils Nose2018 Print · USGSCovers Porter, including Calaveras County, Amador County, and other nearby areas - 2021 Map of Devils Nose, 2021 Print
2021 Devils Nose2021 Print · USGSCalaveras and Amador counties meet in this modern survey of the Sierra Nevada timber and water lands during the early 2020s. Trace local landmarks like Devils Nose, the remote settlement of Lily Valley, and the hydrological works of the Tiger Cr Conduit.
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