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Details for Benchmark: AQ0276

N 29° 53.500 W 081° 18.617 (NAD 83)

Altitude: 4.54

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

Location:
In ST JOHNS county, FL View Original Datasheet
Designation:
872 0576 TIDAL 12
Marker Type:
tidal station disk
Setting:
retaining walls, concrete ledge, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Coorninates were off a little, but it did not matter. The directions were not clear as there were two piers. Unable to locate.

Documented History (by the NGS)

01/01/1974 by NGS (MONUMENTED)
01/01/1975 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 AT ST AUGUSTINE. AT ST. AUGUSTINE, IN THE TOP OF A 2 FOOT THICK SEAWALL AT THE CITY YACHT PIER, 99.0 FEET EAST OF THE EAST CURB OF AVENIDA MENENDEZ STREET, 3.0 FEET NORTH OF THE NORTH SIDE OF A CONCRETE DECK AND THE RAIL OF THE PIER, 35.0 FEET EAST OF THE EAST SIDE OF THE CITY YACHT PIER BUILDING AT THE STREET, ALONG AVENIDA MENENDEZ STREET BETWEEN CADIZ AND MARINE STREETS, ABOUT 2 FEET LOWER THAN THE PIER.
01/01/1976 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 THE BENCH MARK IS A STANDARD NOS BRONZE DISK, STAMPED 12,1974, SET FLUSH IN THE TOP CENTER OF THE 2 FEET THICK SEAWALL AT THE CITY YACHT PIER. 3 FEET NORTH OF THE NORTH SIDE OF THE CONCRETE DECK AND RAIL OF PIER, AND 2 FEET BELOW IT. ABOUT 35 FEET EAST OF THE EAST SIDE OF THE CITY YACHT PIER BUILDING AT THE STREET.
01/01/1978 by FLDNR (GOOD)
RECOVERY NOTE BY FL DEPT OF NAT RES 1978 RECOVERED IN GOOD CONDITION.
01/01/1989 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1989 (JD) RECOVERED IN GOOD CONDITION.
03/03/1991 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1991 (JD) RECOVERED IN GOOD CONDITION.
03/24/1991 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 IN SAINT AUGUSTINE, AT 100 AVENIDA MENENDEZ, IN A CONCRETE RETAINING WALL, 13.4 M (44.0 FT) SOUTHEAST OF THE NORTHEAST CORNER OF THE MUNICIPAL MARINA AT 100 AVENIDA MENENDEZ, 0.8 M (2.6 FT) NORTH OF THE NORTH EDGE OF THE PIER, 0.7 M (2.3 FT) BELOW THE LEVEL OF THE PIER, AND 0.3 M (1.0 FT) WEST OF THE EAST FACE OF THE RETAINING WALL.

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 May 1994.
  • This Tidal Bench Mark is designated as VM 5208 by the Center for Operational Oceanographic Products and Services.
  • 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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