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Details for Benchmark: AG7544

N 27° 57.000 W 082° 23.617 (NAD 83)

Altitude: 11.47

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

Location:
In HILLSBOROUGH county, FL View Original Datasheet
Designation:
N C OF TAMPA
Marker Type:
survey disk
Setting:
pavements (street, sidewalk, curb, apron, etc.)
Stability:
Mark of questionable or unknown stability.

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Found it today 4:19p. Coordinates way off. Skyboy01

[Photos:]
photoN C OF TAMPA
AG7544 N C OF TAMPA. Skyboy01

Documented History (by the NGS)

Unknown by LOCENG (MONUMENTED)
01/01/1982 by FLDNR (GOOD)
DESCRIBED BY FL DEPT OF NAT RES 1982 IN TAMPA. BEGIN AT THE INTERSECTION OF STATE HIGHWAY 60 AND U.S. HIGHWAY 41, GO 1.0 MILE EAST ON HIGHWAY 60 TO THE JUNCTION OF MAYDELL ROAD, GO 0.25 MILE SOUTH ON MAYDELL ROAD TO THE BRIDGE OVER PALM RIVER AND THE MARK. THE MARK BEARS 2 FEET NORTH OF THE NORTHWEST CORNER OF THE BRIDGE, 13 FEET WEST OF THE CENTERLINE OF MAYDELL ROAD, AND 3 FEET EAST OF THE INSIDE EDGE OF THE BRIDGE RAIL. THE MARK WAS STAMPED BY FLDNR. A CITY OF TAMPA DISK.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (LAS) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (PT) 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.
  • This Tidal Bench Mark is designated as VM 7528 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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