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Details for Benchmark: DX3266

N 33° 56.200 W 117° 53.567 (NAD 83)

Altitude: 392.22

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
P 351
Marker Type:
bench mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Been by here a thousand time before. Great day for benchmarking.

[Photos:]
photoP351_1
photoP351_2

Re-find. Remains as described.

[Photos:]
photoDX3266 disc in Brea CA
photoDX3266 area in Brea CA

As described. No problem to find.

[Photos:]
photoDX3266 disc near Brea CA
photoDX3266 area near Brea CA

I noticed that there were no photos of this benchmark so I figured that I would be the FTF. "First-to-Fotgraph". Works for me!

Tigger 2

[Photos:]
photoClose up of the disk
photoLooking NE along Brea Canyon Rd.
photoTigger with the disk.
photoTigger with the disk.

2nd benchmark today, both within 200ft at least. Been seeing this one on the side of the road everyday on my commute, finnaly stopped to log the lil bugger!!! My coord were N33-56.247, W117-53.530. Elev about 350ft above sea level.

N 33° 56.243 W 117° 53.535

Out on a nice cool clear morning.

Documented History (by the NGS)

1/1/1949 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1949 1.3 MI NE FROM BREA. ABOUT 0.9 MILES NORTHEAST ALONG THE BREA CANYON ROAD FROM THE GRAMMAR SCHOOL AT THE NORTH EDGE OF BREA. A 12 INCH SQUARE CONCRETE POST PROJECTING 4 INCHES. IT IS 28 PACES SOUTHWEST OF CULVERT MILE 0.39, 30 FEET NORTHWEST OF HIGHWAY CENTER AND 10.5 FEET SOUTH OF A POWER LINE POLE.
1/1/1974 by CA-059 (GOOD)
RECOVERY NOTE BY ORANGE COUNTY CALIFORNIA 1974 RECOVERED IN GOOD CONDITION.
1/1/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.
1/1/1983 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 1.4 KM (0.9 MI) NORTH OF THE BREA GRAMMAR SCHOOL, ALONG THE NORTHWEST SIDE OF BREA BOULEVARD, 30 FEET FROM CENTER, 28 PACES SOUTHWEST OF A CULVERT, PROJECTING 4-INCHES.
3/29/1994 by MWDSC (GOOD)
RECOVERY NOTE BY METRO WATER DISTR SO. CALIFORNIA 1994 (DEL) RECOVERED IN GOOD CONDITION. ADD 375 FEET (114.3 M) NORTH OF CANYON COUNTRY RD. AND 11.5 FEET (3.5 M) WEST OF EDGE OF PAVEMENT AND 10.5 FEET (3.2 M) SOUTHEAST OF POWER POLE NUMBER 2095460E. REFERENCE MWD FB 2011 02 061.
6/6/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 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 1997.
  • 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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