Skip to Content

Details for Benchmark: AB8630

N 33° 53.467 W 117° 53.533 (NAD 83)

Altitude: 290.46

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
OCF 35 E
Marker Type:
bench mark disk
Setting:
light structures
Stability:
May hold, but of type commonly subject to surface motion.

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.

Found it as described.

[Photos:]
photoBenchmark

Recovered as described.

[Photos:]
photoAB8630 Disc in Fullerton CA
photoAB8630 Area

Parking for this one leaves a bit of a walk and if you want to park close you have to cross a busy, wide street. Just as described, I have nothing to add to it. Disc is in good condition and quite legible.

[Photos:]
photoTigger with the Disc
photoThe disc at State College and Mendocino

Documented History (by the NGS)

01/01/1994 by MWDSC (MONUMENTED)
DESCRIBED BY METRO WATER DISTR SO. CALIFORNIA 1994 (JDG) FULLERTON, NEAR INTERSECTION OF STATE COLLEGE BLVD AND MENDOCINO STREET, ON EASTERLY SIDE OF STATE COLLEGE BLVD, 125 FEET (38.1 M) SOUTH OF CENTERLINE OF MENDOCINO STREET, 40 FEET (12.2 M) EAST OF CENTERLINE OF STATE COLLEGE BLVD, FLUSH IN TOP OF NORTHWEST CORNER OF 29 FEET (8.8 M) BY 6.5 FEET (2.0 M) CONCRETE CATCH BASIN, A 3 INCH MWDSC BRASS DISK STAMPED OCF 35 E 1994. NEAR MWD OCF STA. 987+00. REFERENCE MWD FB 2011 03 043.

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.

Advertising with Us

Return to the Top of the Page