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Details for Benchmark: HU0368

N 38° 20.167 W 075° 05.100 (NAD 83)

Altitude: 6.62

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

Location:
In WORCESTER county, MD View Original Datasheet
Designation:
D 104
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Recovered in good condition while walking through the area this morning. First benchmark I've found in Ocean City... although I've been here plenty of times before. This one just happened to be on my route, and I just happened to think to look for nearby BMs.

[Photos:]
photoHU0368, designation "D 104"
photoHU0368, designation "D 104" (surrounding area)

Observed while caching in the area.

[Photos:]
photoHU0368

Found while out walking today

Found in good condition...

[Photos:]
photoHU0368
photoOcean City Post Office
photoSouth/West Corner of Post Office

Easy find in Ocean City MD

[Photos:]
photoclose up view of benchmark
photocorner of building

Found while on vacation

Found this morning by accident on way to pick up my netflix.

Found as described with Pistache 911.

(843) Found as described.

[Photos:]
photoOcean City HU0368 (3)

First Benchmark, was lots of fun. Very long walk with father and daughter. 64 blocks total round trip from our hotel.

[Photos:]
photo2006_0717Image0007.JPG

Found as described.

[Photos:]
photoClose Up

Recovered in good condition...

[Photos:]
photoD 104 (HU0368) disk - Ocean City, MD

Found as described.

Found this while doing a nearby Geocache.....will follow shortley with photo ( didn't have digital camera with ).

HAKenders........Butch & Fay

Found as described.

[Photos:]
photoHU0368
N 38° 20.186 W 075° 05.084

This benchmark disk was found on the west corner of the northwest wall of the downtown Ocean City Post Office. It was located with ease using the historic description; no changes are necessary. At the mark, my etrex receiver indicated 138 feet from the scaled datasheet coordinates. The disk is in excellent condition with all stamping legible.

Zhanna

[Photos:]
photoHU0368, Worcester County, MD
photoLooking east from Philadelphia Avenue.

Documented History (by the NGS)

01/01/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 AT OCEAN CITY. SET IN A VERTICAL DRILL HOLE IN THE NORTHWEST BRICK WALL AT THE WEST CORNER OF THE OCEAN CITY POST OFFICE. 168 FEET NORTHEAST OF THE NORTHEAST CURB OF NORTH 4TH STREET, 12 FEET SOUTHEAST OF THE SOUTHEAST CURB OF PHILADELPHIA AVENUE, 1.1 FEET NORTHEAST OF THE WEST CORNER OF THE BUILDING AND 1.9 FEET ABOVE THE LEVEL OF THE SIDEWALK.
01/01/1972 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 RECOVERED IN GOOD CONDITION.
01/01/1975 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 RECOVERED IN GOOD CONDITION.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (CAC) 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 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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