Skip to Content

Details for Benchmark: DX3282

N 33° 55.967 W 117° 53.933 (NAD 83)

Altitude: 409.67

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
2 C 75 68
Marker Type:
survey disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

Recovered as described. I guess the original middle number was a typo!

[Photos:]
photoDX3282 Disc in La Habra, CA
photoDX3282 Area
photoDX3282 Wide Shot

On vacation & staying with my wife's Aunt & Uncle, went for a walk, because the benchmark was only a 10th of a mile away. Found it but with the reading of plus/minus of 14 ft. I walked passed it 2 times before I read the info on it again. And as I was reading about all the land marks, & reading the part, 2 FEET SOUTH OF A 3 FOOT X 8 INCH VENT PIPE, walked to the vent pipe and found I was standing right over the benchmark.

[last edit: 3/2/2003 11:41:12 PM PST]

[last edit: 3/11/2003 8:47:25 AM PST]

[Photos:]
photoThe benchmark

Documented History (by the NGS)

01/01/1968 by CA-059 (MONUMENTED)
DESCRIBED BY ORANGE COUNTY CALIFORNIA 1968 0.6 MI NW FROM BREA. 0.5 MILE NORTHEAST ALONG BREA BOULEVARD FROM BREA JUNIOR HIGH SCHOOL TO ITS INTERSECTION WITH CENTRAL AVENUE, THENCE 0.3 MILE WEST ALONG CENTRAL AVENUE TO ITS INTERSECTION WITH TAMARACK AVENUE, 300 FEET NORTH OF THE CENTER LINE OF CENTRAL AVENUE, 133 FEET SOUTH OF THE CENTER LINE OF ORANGEWOOD DRIVE, 19.5 FEET EAST OF THE CENTER LINE OF TAMARACK AVENUE, 32 FEET NORTH OF STREET LIGHT 58, 2 FEET SOUTH OF A 3 FOOT X 8 INCH VENT PIPE, IN THE TOP OF AND AT THE NOTHWEST CORNER OF A 5 FOOT X 6 FOOT CONCRETE EDISON COMPANY VAULT, 0.8 FOOT ABOVE THE ROAD.
01/01/1974 by CA-059 (GOOD)
RECOVERY NOTE BY ORANGE COUNTY CALIFORNIA 1974 RECOVERED IN GOOD CONDITION.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.

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 February 1993. * This is a READJUSTED BENCH MARK height. Code A indicates a distribution rate of 0.0 thru 1.0 mm/km. The height was derived from older observations constrained to new heights in a crustal motion area. The height is approximate in relation to other heights in its vicinity.
  • 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.

Advertising with Us

Return to the Top of the Page