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Details for Benchmark: AA1670

N 24° 39.633 W 081° 31.100 (NAD 83)

Altitude: 14.95

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

Location:
In MONROE county, FL View Original Datasheet
Designation:
872 4332 J TIDAL
Marker Type:
bench mark disk
Setting:
pavements (street, sidewalk, curb, apron, etc.)
Stability:
Mark of questionable or unknown stability.

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Found in great condition for the conditions surrounding the mark. All is well! Cords more approx are: 24 39.654 81 31.110

[Photos:]
photoimage

Found while fishing with my family. Just happened upon it while stayed at Sugarloaf KOA

Documented History (by the NGS)

Unknown by FLDT (MONUMENTED)
11/8/1988 by FLDNR (GOOD)
DESCRIBED BY FL DEPT OF NAT RES 1988 TO REACH THE MARK FROM THE CATHOLIC CHURCH IN KEY WESTTO THE WEST END OF THE BRIDGE OVER BOW CHANNEL AND THE MARK. LOCATED 5.88 M (19.29 FT) SOUTHEAST OF THE CENTERLINE OF THE U.S. HIGHWAY 1 AND 3.05 M (10.01 FT) NORTHEAST OF THE SOUTHWEST CORNER OF THE BRIDGE GUARDRAIL.

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.
  • 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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