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Details for Benchmark: NZ1150

N 42° 23.833 W 122° 56.440 (NAD 83)

Altitude: 1217.3

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In JACKSON county, OR View Original Datasheet
Designation:
CENTRAL POINT ASTRO STA RESET
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

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Documented History (by the NGS)

01/01/1935 by USGS (MONUMENTED)
DESCRIBED BY US GEOLOGICAL SURVEY 1935 THIS STATION HAS APPARENTLY BEEN RECENTLY RECOVERED AND THE STATION MARK RENEWED AS IT IS NOW SET IN A CONCRETE BLOCK PROJECTING SLIGHTLY ABOVE THE SURFACE OF THE GROUND. THE U.S. GEOLOGICAL SURVEY BENCH MARK HAS ALSO BEEN REINFORCED WITH A CONCRETE BLOCK MOULDED ABOUT THE IRON POST. THE DISTANCE BETWEEN THE BENCH MARK AND THE STATION WAS REMEASURED WITH A STEEL TAPE AND FOUND TO BE 92.15 FEET. SLIGHT DISCREPANCY BETWEEN THIS DISTANCE AND THAT GIVEN IN THE ORIGINAL DESCRIPTION MAY BE DUE TO CHANGE IN CONTOUR OF GROUND OVER WHICH THE MEASUREMENT WAS MADE.
01/01/1935 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (BHY) DESCRIPTION SATISFACTORY EXCEPT MINOR CONDITIONS DUE TO TIME. STATION MARK HAD APPARENTLY BEEN RESET IN CONCRETE, OR ADDITIONAL CONCRETE ADDED. IT IS OPPOSITE SEVEN OAKS STATION ON THE SOUTHERN PACIFIC RAILROAD, JUST OUTSIDE OF FIELD FENCE AT NW CORNER OF FIELD AND ABOUT 10 FEET S OF PRIVATE ROAD ENTRANCE WITH LARGE STONE POSTS, ON E SIDE OF PACIFIC HIGHWAY (U.S. 99). DISTANCE REMEASURED TO U.S.G.S. BENCH MARK DESCRIBED AS REFERENCE MARK AND FOUND TO BE 92.15 FEET. RAILROAD CROSSING SIGNPOST (CENTER OF) IS 84.84 FEET FROM STATION MARK IN TRUE AZIMUTH 62 DEG 40 MIN.
01/01/1942 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CWW) THE STATION MARK AND THE U.S. GEOLOGICAL SURVEY BENCH MARK WERE FOUND IN GOOD CONDITION AND ARE NOW MARKED WITH WHITE POSTS. MARKED U.S.B.M. B.M. 1214 (U.S.G.S.) AND B.M. M7 U.S.C. AND G.S. RESPECTIVELY. A NEW REFERENCE MARK WAS SET BUT AS YET HAS NOT BEEN TIED IN TO THE STATION MARK. IT IS A BRONZE REFERENCE DISK SET IN A CONCRETE MONUMENT 4 INCHES ABOVE THE GROUND, ON THE N SIDE OF THE FARM LANE. STAMPED CENTRAL POINT AST. STATION R.M. NO. 2.
01/01/1942 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (LVE) STATION RECOVERED. DESCRIPTION BY U.S.G.S. IN 1935 IS ADEQUATE FOR READY RECOVERY OF STATION. AT TIME OF PRESENT RECOVERY THERE WAS A SMALL WOODEN PLATFORM AND SIGNAL IN PLACE OVER THE STATION.
01/01/1943 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (JCS) THE ORIGINAL DESCRIPTION GIVES THE DISTANCE FROM STATION TO REFERENCE MARK 1 AS 28.15 METERS (92.4 FEET) AND STATES THAT THE STATION MARK IS IN A GRANITE BOULDER. THE PRESENT STATION MARK IS IN CEMENT AND THERE IS NO EVIDENCE OF THE GRANITE BOULDER, ALTHOUGH NO EXCAVATION WAS MADE TO EXAMINE THE MARK BELOW THE SURFACE OF THE GROUND. THE REFERENCE MARK ALSO SHOWS SIGNS OF REINFORCEMENT SINCE ORIGINALLY ESTABLISHED. STATION IS AT THE E RIGHT-OF-WAY FENCE OF U.S. HIGHWAY 99 AND AT THE INSIDE OF A SHARP CURVE IN HIGHWAY. IT IS 33 PACES E OF THE CENTER LINE OF RAILROAD TRACK, 28 FEET E OF CENTER LINE OF U.S. HIGHWAY 99, 24 FEET S OF CENTER LINE OF DRIVE LEADING E TO FARMHOUSE, 7 FEET S OF CORNER FENCE POST AT DRIVE, 1-1/2 FEET N OF A 4- BY 4-INCH WHITE WITNESS POST, AND 10 INCHES W OF RIGHT-OF-WAY FENCE. STATION IS AN OLD-TYPE BRONZE DISK SET IN TOP OF A 12-INCH CONCRETE POST FLUSH WITH THE GROUND. NO STAMPING ON DISK. REFERENCE MARK 1 IS SW OF STATION AND 21 FEET NE OF A GRAVEL ROAD CROSSING RAILROAD TRACKS. IT IS 51 FEET W OF U.S. HIGHWAY 99, 14 FEET E OF CENTER LINE OF RAILROAD, AND IS 3 FEET W OF A 4- BY 4-INCH WHITE WITNESS POST. REFERENCE MARK 2 IS SSE OF THE STATION. IT IS 27 FEET E OF U.S. HIGHWAY 99 AND 1 FOOT W OF THE E RIGHT-OF-WAY FENCE LINE. A BRONZE REFERENCE DISK SET IN TOP OF A CONCRETE POST PROJECTING 7 INCHES AND STAMPED C P AST STA NO 2 1904. THIS MARK WAS SET IN 1943. A U.S. GEOLOGICAL BRONZE CAP ON PIPE IS SET IN TOP OF A LARGE CONICAL CONCRETE POST PROJECTING 12 INCHES, STAMPED 1214. AZIMUTH MARK IS 0.4 MILE SE OF THE STATION. IT IS 0.1 MILE SE OF BRIDGE OVER JUNCTION CREEK, 48 FEET NE OF THE CENTER LINE OF HIGHWAY 99, 30 FEET NE OF POWER POLE, AND 20 FEET NE OF THE NE HIGHWAY RIGHT-OF-WAY FENCE. A BRONZE AZIMUTH DISK SET IN A CONCRETE POST FLUSH WITH THE GROUND, STAMPED C P AST STA 1943. TO REACH FROM CENTRAL POINT GO NW ALONG HIGHWAY 99 FOR 2 MILES TO A ROAD SW AND A CURVE IN HIGHWAY AND STATION ON RIGHT.
01/01/1967 by USE (MARK NOT FOUND)
RECOVERY NOTE BY US ENGINEERS 1967 STATION WAS NOT RECOVERED. MEASUREMENTS WERE MADE FROM BENCH MARK 1214. NO DIGGING WAS DONE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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