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Details for Benchmark: HU1171

N 38° 26.800 W 075° 03.567 (NAD 83)

Altitude: 7.2

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

Location:
In WORCESTER county, MD View Original Datasheet
Designation:
OC 13
Marker Type:
survey disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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There was a worker nearby when I stopped...so of course I asked if he had the keys - he did...but...they were back at the shop..so I moved on to the next mark.

[Photos:]
photoOC 13 (HU1171) area - Ocean City, MD

Mark (and referenced pump and pump base) appear to be housed in a small building at the described location. The door was locked. See photo.

[Photos:]
photoHU1171 - in Ocean City, MD. Is it there?
Looking NNW from the south side of 141st Street, .35 miles west of Rte 1. I suspect that the pump, base and mark are in there.

It is likely that this little “house”, located 0.35 miles west along 141st Street from Coastal Highway, surrounds the pump and the mark. The door was locked and therefore I couldn't gain access.

Zhanna and Aaron

[Photos:]
photoA small obstacle ...
photoI was being watched.
Too bad this guy didn't have the key!

Documented History (by the NGS)

01/01/1977 by MDDT (MONUMENTED)
DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1977 IN OCEAN CITY. FROM THE MD-DEL STATE LINE PROCEED S ON MD RTE 528 (COASTAL HIGHWAY) FOR 0.3 MI TO 141ST ST, GO W ON 141ST ST FOR 0.35 MI TO STATION SET VERTICALLY IN THE EAST FACE OF A 3.0 X 3.0 CONCRETE BASE OF AN OCEAN CITY WATER PUMP. 1 FEET ABOVE GROUND.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (NPP) 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.
  • 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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