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Details for Benchmark: AD2465

N 26° 02.367 W 080° 08.950 (NAD 83)

Altitude: 11.45

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

Location:
In BROWARD county, FL View Original Datasheet
Designation:
X 238
Marker Type:
bench mark disk
Setting:
copper-clad steel rod
Stability:
Probably hold position/elevation well.

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Trying to find the right ones to qualify for Gungadoy challenge. This is one I need. Easy find still damaged.

[Photos:]
photoClose up
photoDistance view

Benchmarking in the area and stopped by and found this damaged USC&GS Bench Mark disk.

[Photos:]
photoAD2465-X_238-1-20141005
photoAD2465-X_238-SIDE VIEW-20141005
photoAD2465-X_238-3E-20141005

Benchmarking with mosquimoyo.... Happy we found it!!!

Benchmarking with davidleeg... we found the mark and here is the pic........

[Photos:]
photoAD2465 - X238

Found this survey maker, well kind of. I found the sign which marks the spot of where it is, which is under the ground. Took a picture of the post telling you you were at a survey marker and to not disturb it

Documented History (by the NGS)

1/1/1970 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 1.9 MI N FROM HOLLYWOOD. AT HOLLYWOOD, ABOUT 1.8 MILES NORTH ALONG THE FLORIDA EAST COAST RAILWAY FROM THE CROSSING OF HOLLYWOOD BLVD., 0.1 MILE NORTH OF MILEPOST 347, NEAR THE NORTHWEST CORNER OF THE DANIA CEMETERY, 99 FEET EAST OF AND ACROSS 4TH AVENUE FROM THE EAST RAIL OF THE NORTHBOUND TRACK, 108 FEET SOUTH OF A LARGE CONCRETE POST AT THE NORTHWEST CORNER OF THE CEMETERY, 32 FEET EAST OF THE CENTER LINE OF SW 4TH AVENUE, 1.5 FEET SOUTH OF THE SOUTHWEST CORNER OF A LARGE CONCRETE POST ALONG SOUTH SIDE OF A DRIVEWAY, ABOUT LEVEL WITH THE TRACK AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD WHICH IS FLUSH WITH THE GROUND AND PROTECTED BY A 4 INCH METAL PIPE WHICH PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND. THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 66 FEET. SEC 3, T51S, R 42E
1/1/1973 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 RECOVERED IN GOOD CONDITION.
1/1/1978 by FL-011 (GOOD)
RECOVERY NOTE BY BROWARD COUNTY FLORIDA 1978 RECOVERED IN GOOD CONDITION.
1/1/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (IEE) RECOVERED IN GOOD CONDITION.
1/1/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (JHH) RECOVERED IN GOOD CONDITION.
12/18/1990 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990 0.3 KM (0.2 MI) NORTHERLY ALONG DIXIE HIGHWAY FROM THE INTERSECTION OF SHERIDAN STREET (STATE HIGHWAY 822) IN HOLLYWOOD, THENCE 0.3 KM (0.2 MI) NORTHERLY ALONG SOUTHWEST FOURTH AVENUE, NEAR THE NORTHWEST CORNER OF THE DANIA MEMORIAL PARK CEMETERY, 9.8 M (32.2 FT) EAST OF AND LEVEL WITH THE AVENUE CENTERLINE, 7.9 M (25.9 FT) SOUTH OF THE CENTER OF A CEMETERY ENTRANCE, 0.5 M (1.6 FT) WEST OF A WITNESS POST, AND 0.5 M (1.6 FT) SOUTH OF THE SOUTHWEST CORNER OF A PILLAR. NOTE--THE DISK IS ENCASED IN A 4-INCH IRON PIPE THAT IS 0.1 M (0.3 FT) BELOW THE GROUND SURFACE.

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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