File:California Nevada Oregon Tripoint Monument Von Schmidt 1872 NGS MV0393 2.jpg
California_Nevada_Oregon_Tripoint_Monument_Von_Schmidt_1872_NGS_MV0393_2.jpg (600 × 400 pixels, file size: 95 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionCalifornia Nevada Oregon Tripoint Monument Von Schmidt 1872 NGS MV0393 2.jpg |
English: Boundary Post California Nevada Oregon Monument.
Official US Government Survey, Von Schmidt Survey of 1872. Historic monument forming the corner boundary of the three states. Close view of inscription stone. Inscription reads: "1872 A W Von Schmidt. LON. 120 LAT. 42" |
Date | 2013-12-230 12:00:00 |
Source | National Geodetic Survey, NGS. US Government. |
Author | National Geodetic Survey NGS. National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS) office. |
Camera location | 41° 59′ 41.76″ N, 119° 59′ 58.26″ W ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Boundary Post California Nevada Oregon Monument
[edit]The Boundary Post California Nevada Oregon Monument was set in 1872 by the Von Schmidt Survey, and it became the prime corner mark between the states of California, Nevada, and Oregon. The monument is a chiseled inscription stone in a rock mound, supporting a wood engraved post, called "The Boundary Post".
According to the US Supreme Court's 1980 decision in the case of California v. Nevada: " That the location of the boundary between the States of California and Nevada is as hereafter specified: "Beginning at the Initial Point on the California-Nevada boundary as established under authority of the Act of June 10, 1872, 17 Stat. 358, by Allexey W. Von Schmidt in 1872 as an eight (8) inch square wood post set in a large mound of stone at the intersection to the 42nd parallel of north latitude along the southern boundary of the State of Oregon and the 120th degree of longitude west from Greenwich, each as reported by him..."
![Tripoint Trail Topo Map of the Boundary Post Monument](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Tripoint_Trail_CA_NV_OR_Topo_Map.jpg/640px-Tripoint_Trail_CA_NV_OR_Topo_Map.jpg)
Image: Tripoint Trail Topo Map of the Boundary Post CA NV OR Monument
Background: In 1872, Allexy Von Schmidt and his survey party arrived on horseback with pack animals and camped here in this remote wilderness. They set up tents and an "astronomic observatory" as it was called then, basically, a theodolite, plumb bob, stadia, telescope, clock, reference book, charts, and paper notes. The sun and stars were sighted and timed. The technology of the day consisted of pencil calculations, mechanical optics, and skill; these alone determined the accuracy of latitude and longitude. A difference of one second in clock timing compared to the observatory in Greenwich England, would make the location error worse than 1700 feet. Amazingly, since there was no telegraph at this location to get precise coordinated time, this monument is only about 1800 feet south and about 130 feet east of the perfect "42 degrees North by 120 degrees West" goal.
NGS Data Sheet for the Boundary Post CA NV OR Monument
[edit]National Geodetic Survey MV0393 *********************************************************************** MV0393 DESIGNATION - BOUNDARY POST CA NV OR MV0393 PID - MV0393 MV0393 STATE/COUNTY- NV/WASHOE MV0393 COUNTRY - US MV0393 USGS QUAD - BARREL SPRINGS (1966) MV0393 MV0393 *CURRENT SURVEY CONTROL MV0393 ______________________________________________________________________ MV0393* NAD 83(1994) POSITION- 41 59 41.73837(N) 119 59 58.25658(W) NO CHECK MV0393* NAVD 88 ORTHO HEIGHT - 1611. (meters) 5285. (feet) SCALED MV0393 ______________________________________________________________________ MV0393 GEOID HEIGHT - -20.76 (meters) GEOID12A MV0393 LAPLACE CORR - -0.56 (seconds) DEFLEC12A MV0393 HORZ ORDER - THIRD MV0393 MV0393.The horizontal coordinates were established by classical geodetic methods MV0393.and adjusted by the National Geodetic Survey in June 1998. MV0393. MV0393.No horizontal observational check was made to the station. MV0393. MV0393.The orthometric height was scaled from a topographic map. MV0393 MV0393.Photographs are available for this station. MV0393 MV0393.The Laplace correction was computed from DEFLEC12A derived deflections. MV0393 MV0393. The following values were computed from the NAD 83(1994) position. MV0393 MV0393; North East Units Scale Factor Converg. MV0393;SPC CA 1 - 797,452.039 2,165,756.979 MT 1.00009997 +1 18 29.1 MV0393;SPC CA 1 - 2,616,307.23 7,105,487.69 sFT 1.00009997 +1 18 29.1 MV0393;SPC NV W - 4,805,104.961 682,669.352 MT 1.00006934 -0 56 51.5 MV0393;SPC NV W -15,764,748.53 2,239,724.37 sFT 1.00006934 -0 56 51.5 MV0393;SPC OR S - 36,589.872 1,541,472.794 MT 1.00010234 +0 20 32.7 MV0393;SPC OR S - 120,045.51 5,057,325.44 iFT 1.00010234 +0 20 32.7 MV0393;UTM 11 - 4,653,566.190 251,555.443 MT 1.00035959 -2 00 28.4 MV0393;UTM 10 - 4,653,569.003 748,524.790 MT 1.00036008 +2 00 30.8 MV0393 MV0393! - Elev Factor x Scale Factor = Combined Factor MV0393!SPC CA 1 - 0.99975062 x 1.00009997 = 0.99985056 MV0393!SPC NV W - 0.99975062 x 1.00006934 = 0.99981994 MV0393!SPC OR S - 0.99975062 x 1.00010234 = 0.99985293 MV0393!UTM 11 - 0.99975062 x 1.00035959 = 1.00011012 MV0393!UTM 10 - 0.99975062 x 1.00036008 = 1.00011061 MV0393 MV0393 SUPERSEDED SURVEY CONTROL MV0393 MV0393 NAD 83(1991)- 41 59 41.73837(N) 119 59 58.25659(W) AD( ) 3 MV0393 NAD 83(1986)- 41 59 41.73984(N) 119 59 58.25578(W) AD( ) 3 MV0393 NAD 27 - 41 59 42.13600(N) 119 59 54.44400(W) AD( ) 3 MV0393 MV0393.Superseded values are not recommended for survey control. MV0393 MV0393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MV0393.See file dsdata.txt to determine how the superseded data were derived. MV0393 MV0393_U.S. NATIONAL GRID SPATIAL ADDRESS: 11TKG5155553566(NAD 83) MV0393 MV0393_MARKER: Z = SEE DESCRIPTION MV0393_SETTING: 0 = UNSPECIFIED SETTING MV0393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR MV0393+SATELLITE: SATELLITE OBSERVATIONS - August 15, 2013 MV0393 MV0393 HISTORY - Date Condition Report By MV0393 HISTORY - UNK MONUMENTED CGS MV0393 HISTORY - 1950 GOOD CGS MV0393 HISTORY - 20130815 GOOD INDIV MV0393 MV0393 STATION DESCRIPTION MV0393 MV0393'DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (EBL) MV0393'STATION IS LOCATED ABOUT 17 MILES EAST OF NEW PINE CREEK IN THE MV0393'EXTREME NORTHEAST CORNER OF CALIFORNIA. MV0393' MV0393'THE BOUNDARY POST IS AN 8 BY 8 INCH TIMBER THAT PROJECTS 10 FEET MV0393'ABOVE THE GROUND AND IS SUPPORTED BY ROCKS AROUND THE BASE OF THE MV0393'TIMBER. MV0393' MV0393'TO REACH FROM DYKES STORE AND POST OFFICE IN ADEL, GO SOUTH ON THE MV0393'FT. BIDWELL ROAD FOR 15.8 MILES TO A CROSSROAD AT THE BOTTOM OF A MV0393'STEEP GRADE, JUST BEFORE COMING TO A WOOD BRIDGE. TURN LEFT ON THE MV0393'DIM ROAD AND GO 1.1 MILES TO THE BOTTOM OF A CANYON AND THE END OF MV0393'TRUCK TRAVEL. FROM HERE, PACK SOUTH ACROSS CREEK AND UP THE CANYON MV0393'WALL TOWARD A SHALLOW DRAW WHICH IS VISIBLE FROM THE BOTTOM OF THE MV0393'CANYON. CONTINUE TOWARES THE HIGHEST PART OF THE RIDGE AND THE MV0393'AZIMUTH MARK. FROM HERE THE STATION IS ABOUT 400 PACES TO THE LEFT, MV0393'EAST. ABOUT A 30 MINUTE PACK. MV0393 MV0393 STATION RECOVERY (2013) MV0393 MV0393'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (KL) MV0393'THE 8 INCH SQUARE POST AND ROCK MOUND FOUND AS DESCRIBED, POST IS MV0393'LEANING NORTHERLY ABOUT 10 DEGREES, A LONG WOOD SAPLING POLE HAS BEEN MV0393'BALING WIRED TO THE POST. MV0393' AN INSCRIBED STONE HAS BEEN CEMENTED IN THE SOUTH FACE OF THE ROCK MV0393'MOUND, SAYING '1872 A.W. VON SCHMIDT LON. 120 LAT. 42'. THIS MV0393'INSCRIPTION WAS NOT DESCRIBED IN THE 1950 USCGS NOTE AND IS PROBABLY MV0393'NOT ORIGINAL. MV0393' A BEARING TREE BLAZE IS IN AN OLD JUNIPER WESTERLY OF THE ROCK MV0393'MOUND, A YELLOW BEARING TREE TAG STATES IN PART 'N68E 53.2' LS 4333 21 MV0393'JULY 1984'. A BARBED WIRE FENCE HAS BEEN CONSTRUCTED ON THE APPROX. MV0393'NEVADA-CALIFORNIA NORTH-SOUTH LINE JUST WESTERLY OF THE ROCK MOUND. MV0393' MV0393'USE NEW TO-REACH DESCRIPTION FOR MV0392. MV0393' MV0393'KRISS LARSON CA PLS 6179
End of description.
Licensing
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This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
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Camera manufacturer | EASTMAN KODAK COMPANY |
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Camera model | KODAK DX6440 ZOOM DIGITAL CAMERA |
Exposure time | 1/250 sec (0.004) |
F-number | f/5.6 |
Date and time of data generation | 15:43, 28 March 2009 |
Lens focal length | 12.1 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 22:50, 29 March 2009 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 15:43, 28 March 2009 |
Meaning of each component |
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Image compression mode | 1 |
APEX exposure bias | 0 |
Maximum land aperture | 3.6 APEX (f/3.48) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |