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Details for Benchmark: DX2245

N 33° 51.533 W 117° 50.350 (NAD 83)

Altitude: 245.3

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
2 C 98 74
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.

Must Read!

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Recovered as described. I was actually looking for a different mark (not found), but I'll take this one instead.

[Photos:]
photoDX2245 Disc in Orange CA
The "8" is slightly damaged (probably a lawn mower), but there can be no confusion that this is the cortrect disc.
photoDX2245 Area
Looking west along the tracks from Tustin Ave

YeeHaw!! 1 for 4 today! At least I didn't get skunked. This one is just as described, an easy find and requires virtually no walking to get to. It is in great condition and is just waiting along side Tustin Avenue for you.

Tigger 2

[Photos:]
photoTigger with the disk.
photoClose up of the disk.
photoWide shot of the area.
Looking NW along Tustin Avenue.

Documented History (by the NGS)

01/01/1974 by CA-059 (MONUMENTED)
DESCRIBED BY ORANGE COUNTY CALIFORNIA 1974 IN NORTHEASTERN ANAHEIM. 0.3 MILE SOUTHEASTERLY ALONG TUSTIN AVENUE FROM ITS INTERSECTION WITH MIRALOMA AVENUE, 59 FEET SOUTHWEST OF THE CENTERLINE OF TUSTIN AVENUE, 54 FEET WEST OF THE CENTERLINE OF THE RAILROAD SPUR LINE OF THE ATCHISON, TOPEKA AND SANTA FE RAILROAD COMPANY, 47 FEET NORTHWEST OF A TELEPHONE POLE, NO NUMBER, 9 FEET SOUTHWEST OF THE MOST SOUTHERLY RAILROAD CROSSING SIGNAL LIGHT, REFERENCED BY A METAL POST AND 1.5 FEET SOUTHEAST OF THE METAL POST, SET ON A 6 INCH BY 6 INCH CONCRETE MONUMENT, 3 INCHES ABOVE THE GROUND AND 1 FOOT ABOVE THE LEVEL OF THE ROADWAY.
01/01/1977 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 RECOVERED IN GOOD CONDITION.
01/01/1988 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. NEW DESCRIPTION FOLLOWS. 1.0 KM (0.60 MI) WEST ALONG ORANGE-THORPE AVENUE FROM THE INTERSECTION OF VAN BUREN STREET IN ATWOOD, THENCE 1.1 KM (0.70 MI) SOUTH ALONG TUSTIN AVENUE, 18.0 M (59.1 FT) SOUTHWEST OF THE AVENUE CENTERLINE, 15.8 M (51.8 FT) WEST OF THE WEST RAIL OF THE WESTMOST SET OF RAILROAD TRACKS OF THE ATCHISON TOPEKA AND SANTA FE RAILROAD, 2.7 M (8.9 FT) WEST OF THE RAILROAD SIGNAL CROSSING POLE FOR THE SOUTHBOUND LANES OF THE AVENUE. THE MARK IS 0.2 M ABOVE THE AVENUE.

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 June 1991. WARNING-Repeat measurements at this control monument indicate possible vertical movement.
  • 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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