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Details for Benchmark: CZ0335

N 32° 40.883 W 111° 26.550 (NAD 83)

Altitude: 1703.28

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

Location:
In PINAL county, AZ View Original Datasheet
Designation:
G 279
Marker Type:
survey disk
Setting:
in a boulder
Stability:
May hold, but of type commonly subject to surface motion.

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checked it out while in the Pnewman Peak area

Recovered as described, in good condition. GPS (HH2) co-ordinates N32 Deg 40.892' W11 Deg 26.543 '.

[Photos:]
photoG 279 / CZ0335
A close-up of the mark, with the GPSr.
photoG 279 / CZ0335
A close-up of the mark alone.
photoG 279 / CZ0335
A wide view of the general area, looking north.

Documented History (by the NGS)

Unknown by USGS (MONUMENTED)
01/01/1967 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 4.1 MI SE FROM PICACHO. ABOUT 4.1 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE DISTRICT 33 ELEMENTARY SCHOOL AT PICACHO, IN SECTION 32, T 8 S, R 9 E, 9 RAILS SOUTHEAST OF A WOODEN TWIN CHANNEL BOX CULVERT UNDER THE TRACK, 47 1/2 FEET NORTHEAST OF THE NORTHEAST RAIL OF THE TRACK, A US GEOLOGICAL SURVEY DISK SET IN THE TOP OF A GRANITE BOULDER, 5 1/2 FEET NORTHWEST OF A TELEPHONE POLE, WHICH BEARS THE METAL LETTER G, IN LINE WITH A ROW OF POLES, 1.1 FEET SOUTHEAST OF A METAL WITNESS POST, AND ABOUT 4 FEET BELOW THE LEVEL OF THE TRACK.
01/01/1975 by AZDT (GOOD)
RECOVERY NOTE BY ARIZONA DEPARTMENT OF TRANSPORTATION 1975 FROM MILEPOST 216, I-10, EAST ON THE INTERSTATE FOR 0.1 MILES AND TO THE STATION ON THE LEFT. 1 FT. EAST OF A USC AND GS SIGN. 5 FT. WEST OF A TELEPHONE POLE. NORTH OF THE RAILROAD TRACKS AND 50 FT. SOUTH OF THE NORTH RAILROAD R/W FENCE LINE. 260 FT. EAST OF A POWER LINE WHICH CROSSES THE RAILROAD AND THE HIGHWAY. A USGS CAP CEMENTED INTO A DRILL HOLE INTO A 10 IN. STONE. THE MARK HAS BEEN STAMPED BY THE USC AND GS.
01/01/1980 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 THE MARK IS 1.2 M BELOW THE RAILS. 36.5 KILOMETERS (22.7 MILES) SOUTHEAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT CASA GRANDE, IN TOP OF A 0.3- BY 0.3- METER EMBEDDED GRANITE BOULDER PROJECTING 5 CENTIMETERS ABOVE THE GROUND, 14.4 METERS (47 FEET) NORTHEAST OF THE NORTHEAST RAIL, 128 METERS (420 FEET) SOUTHEAST OF A T-POWER LINE POLE WITH 2 GUY WIRES, 78.9 METERS (259 FEET) NORTHWEST OF SIGNAL LIGHT 941.5 AND 15.4 METERS (50.3 FEET) SOUTHWEST OF THE NORTHEAST RIGHT-OF-WAY FENCE. THE MARK IS 0.4 METERS SE FROM A WITNESS POST.
01/01/1984 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 RECOVERED IN GOOD CONDITION.
12/05/1991 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 6.3 KM (3.90 MI) SOUTHEASTERLY ALONG CAMINO ADELANTE ROAD FROM THE POST OFFICE IN PICACHO, IN A 12 BY 12 INCH BOULDER THAT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE, 78.8 M (258.5 FT) SOUTH-SOUTHEAST OF A T-JUNCTION UTILITY POLE, 54.7 M (179.5 FT) NORTHEAST OF THE ROAD CENTERLINE, 15.4 M (50.5 FT) SOUTHWEST OF A FENCE, 14.4 M (47.2 FT) NORTHEAST OF THE NEAR RAIL OF THE SOUTHERN PACIFIC RAILROAD, 1.5 M (4.9 FT) BELOW THE LEVEL OF THE TRACK, AND 0.4 M (1.3 FT) SOUTHEAST OF A WITNESS POST.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in November 1993.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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