Von Schmidt State Boundry Monument
San Bernardino County, San Bernardino County, California
Marker Inscription
Von Schmidt State Boundry Monument. This marker commemorates the iron column erected in 1873 at the southernmost tip of the boundary survey line run by Alexey W. Von Schmidt. U.S. astronomer and surveyor. The line dividing Nevada and California was based on preliminary geodetic work by Lieutenant Joseph Christmas Ives. Ives determined the Colorado River end of the proposed oblique California-Nevada boundary. Von Schmidt calculated and ran the first complete survey of the boundary. His solar observations erred slightly, the actual line now being ¾ mile to the north.
Erected by Dedicated November 20,1974 By Needles Chapter Of The San Bernadinocounty Museum Association And The California, Arizona And Nevada Development Association, Can Do
The Story
This marker commemorates the iron column planted in 1873 at the southern end of the California–Nevada boundary survey run by U.S. astronomer and surveyor Alexey W. Von Schmidt. The line built on earlier fieldwork by Lieutenant Joseph Christmas Ives, who had fixed the Colorado River end of the proposed oblique border. Von Schmidt ran the first complete survey of the boundary—though his solar observations erred slightly, leaving the true line about three-quarters of a mile to the north.
Why it matters
It captures the painstaking, error-prone science of nineteenth-century surveying that literally drew the map of the American West, one imperfect observation at a time.
The story behind this marker
AI contextThe era
By the 1870s, the American West was being measured, mapped, and divided as fast as it was being settled. The Civil War was over, the transcontinental railroad had just stitched the coasts together, and a young nation was in a hurry to know exactly what it owned. Out in the blistering country where the Colorado River separates today's California, Nevada, and Arizona, that meant one hard question: where, precisely, does one state end and the next begin?
This was the Reconstruction and Gilded Age, an era that prized measurement and "scientific" precision as tools of national progress. Boundaries between the new Western states could not simply be described in words; they had to be walked, calculated, and marked on the ground with monuments a rancher or a miner could actually stand beside. In this remote corner of San Bernardino County, that work fell to a generation of astronomers and surveyors who did their arithmetic by the sun and the stars.
The land itself made the job brutal. This is low desert near the Colorado, a place of heat, distance, and few landmarks. To fix a line here was to fight the terrain for every mile.
People & events
The marker honors an iron column set in 1873 at the southernmost tip of a survey line run by Alexey W. Von Schmidt, a U.S. astronomer and surveyor. His task was enormous: to calculate and run the first complete survey of the boundary dividing Nevada from California, a line drawn not straight but on an angle, or "oblique," toward the Colorado River.
He did not begin from nothing. The marker credits Lieutenant Joseph Christmas Ives with the preliminary geodetic groundwork, having determined the Colorado River end of the proposed boundary. Ives fixed one anchor; Von Schmidt then computed and ran the full line between the endpoints and drove his monuments into the ground to make it real.
And here is the honest, human twist the marker preserves: Von Schmidt's solar observations were slightly off. He was measuring the angle of the sun to find his position, and small errors in that work accumulated across many miles. The line he ran ended up about three-quarters of a mile south of where the true boundary lies today. The iron column marks not a mistake to be hidden but the genuine limit of what careful hands and simple instruments could achieve.
Its place in the American story
Every clean, confident border on a map of the United States was, at some point, a person squinting through an instrument at the sun, doing long calculations by hand, and hoping the arithmetic held. This monument is a rare, honest reminder of that reality. The crisp line between California and Nevada was not handed down whole; it was surveyed, monument by monument, with the technology of the 1870s.
The three-quarter-mile error is the whole story in miniature. It shows that the map of the American West was assembled from thousands of imperfect but painstaking observations, each one the best a skilled professional could do with what he had. Later, more precise work refined the line, but Von Schmidt's survey was the foundational act that turned a proposed boundary into a real, defensible one.
It is also a monument to a distinctly American faith in measurement, the same impulse that surveyed the public lands, gridded the townships, and insisted that a growing nation could be known exactly. That the answer came out a little wrong doesn't diminish the effort; it dignifies it.
If you visit
Come out here expecting distance and desert, not a manicured park. This is remote country in San Bernardino County near the Colorado River corridor, and the reward is the sense of standing at a very deliberate point on the map, a spot chosen by calculation rather than convenience.
Let the number do its work on you. The marker tells you the true line lies about three-quarters of a mile to the north of where Von Schmidt set his column. Look off in that direction and try to picture the gap; it is close enough to feel small and far enough to remind you how hard this work was. That short walk of imagination is the whole point of the place.
If you're threading together a road trip along the Colorado River and the California-Nevada-Arizona borderlands, this makes a thoughtful stop for anyone who likes the hidden machinery behind ordinary maps. Bring water, respect the heat, and give a moment to the 1974 dedication that set this commemoration in place, a community's decision that a surveyor's iron column was worth remembering.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
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Related people
- · Alexey W. Von Schmidt
- · Joseph Christmas Ives
Related events
- · California–Nevada boundary survey, 1873
Themes & tags
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