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Details for Benchmark: AD2716

N 26° 34.217 W 080° 02.417 (NAD 83)

Altitude: 3.66

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

Location:
In PALM BEACH county, FL View Original Datasheet
Designation:
G 315
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Found as described.

clearly mounted on cement wall near intracoastal waterway- west side of A1A - good condition

[Photos:]
photoclose up with designation visible
photolooking west toward intracoastal waterway

The mark is in good condition at N 26° 34.199 W 080° 02.428.

[Photos:]
photoAD2716(G 315)-Manalapan, Palm Beach County FL
photoAD2716 - Looking N from mark
photoAD2716 - Looking E from mark
photoAD2716 - Looking W from mark
photoAD2716 - Looking S from mark

Documented History (by the NGS)

01/01/1970 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 1 MI S FROM LANTANA. ABOUT 0.95 MILE SOUTH ALONG STATE HIGHWAY A 1 A FROM THE JUNCTION OF OCEAN AVENUE AT LANTANA, SET ON THE TOP OF A CONCRETE SEAWALL, 44.4 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 14.6 FEET EAST OF THE JUNCTION OF A NORTH-SOUTH SEAWALL, 1.3 FEET WEST OF THE EAST END OF THE EAST-WEST SEAWALL AND ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY.
01/01/1973 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 RECOVERED IN GOOD CONDITION.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (CEK) RECOVERED IN GOOD CONDITION.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (BJS) RECOVERED IN GOOD CONDITION.
01/01/1989 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1989 (BJS) RECOVERED IN GOOD CONDITION.
06/03/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 RECOVERED IN GOOD CONDITION.
06/15/1995 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1995 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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