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Details for Benchmark: DX2302

N 33° 49.267 W 117° 54.283 (NAD 83)

Altitude: 159.7

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
A 34
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Documented History (by the NGS)

01/01/1920 by CGS (MONUMENTED)
01/01/1966 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1966 0.9 MI S FROM ANAHEIM. IT IS 0.9 MILE SOUTH ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT ANAHEIM, 0.15 MILE SOUTH OF THE T-JUNCTION OF OLIVE STREET AND VERMONT AVENUE, ABOUT 200 FEET EAST OF THE T-INTERSECTION OF PHILADELPHIA STREET AND CHARLOTTE AVENUE, EAST OF AND DIRECTLY BEHIND RESIDENCE 974 CHARLOTTE AVENUE, 9 3/4 RAILS SOUTH OF RAILROAD MILE POST 511, 8.2 FEET WEST OF THE WEST RAIL, CEMENTED IN A DRILL HOLE 2.0 FEET SOUTH OF THE NORTH END OF A CONCRETE HEADWALL OF A RAILROAD CULVERT, AND ABOUT 1.2 FEET LOWER THAN THE TRACKS.
01/01/1973 by CA-059 (MARK NOT FOUND)
RECOVERY NOTE BY ORANGE COUNTY CALIFORNIA 1973 MARK NOT FOUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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 geoid height was determined by GEOID99.

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