Skip to Content

Details for Benchmark: AD5858

N 26° 10.050 W 080° 06.267 (NAD 83)

Altitude: 24.34

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

Location:
In BROWARD county, FL View Original Datasheet
Designation:
25.850 FLDT
Marker Type:
bench mark disk
Setting:
abutments and piers of large bridges
Stability:
Probably hold position/elevation well.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

Documented History (by the NGS)

Unknown by FLDT (MONUMENTED)
1/1/1981 by FLDNR (GOOD)
DESCRIBED BY FL DEPT OF NAT RES 1981 IN FORT LAUDERDALE. BEGIN AT THE JUNCTION OF STATE ROAD 816 (OAKLAND PARK BLVD) AND STATE ROAD A1A, GO 0.1 MILE WEST ON STATE ROAD 816 TO A DRAWBRIDGE OVER THE INTRACOASTAL WATERWAY AND THE MARK. THE MARK IS SET IN THE SOUTHWEST BRIDGE ABUTMENT, 21 FEET SOUTH OF THE CENTERLINE OF THE EASTBOUND LANE. THE MARK IS 1 FT ABOVE HIGHWAY.
1/1/1989 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1989 (BJS) RECOVERED IN GOOD CONDITION.
1/1/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (IB) RECOVERED IN GOOD CONDITION.
1/1/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (JHH) RECOVERED IN GOOD CONDITION.
2/7/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 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.

Advertising with Us

Return to the Top of the Page