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Details for Benchmark: TU1118

N 21° 23.980 W 157° 50.113 (NAD 83)

Altitude: 14.7

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

Location:
In HONOLULU county, HI View Original Datasheet
Designation:
STATE SURVEY 9-26 LOW 1969
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Found while hiking. Like others have said this benchmark is in amazing condition, considering it's sitting on a ridge that's mostly clouded or rainy.

[Photos:]
photoLooking Southeast?
photobenchmark

Wow this was the most pristine benchmark I have ever seen out in the wild .

Stumbled upon this one while making our way down from the Godek-Jaszkulski Summit over to the H-3 Summit Saddle. Sweet!
[b][green]GG[/green][/b]

[Photos:]
photoTU1118
photoTU1118 from a distance

Documented History (by the NGS)

01/01/1969 by HIGS (MONUMENTED)
DESCRIBED BY HAWAII GEODETIC SURVEY 1969 STATION IS LOCATED ON THE TOP OF KOOLAU RANGE, BETWEEN MOANALUA VALLEY AND HAIKU VALLEY, AND ABOUT MIDWAY BETWEEN THE ANTENNA ANCHOR TOWERS FOR THE HAIKU RADIO STATION CABLES. STATION IS ON A SMALL PEAK WITH AN AREA OF ABOUT 15 FEET WIDTH SEATED OVER THE SADDLE RIDGE AND CAN ONLY BE REACHED BY THE USE OF HELICOPTER. STATION MARK IS A STANDARD SURVEY DISK STAMPED 9-26 1969 = LOW CEMENTED IN CONCRETE MONUMENT 0.1 FOOT ABOVE GROUND LEVEL.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in December 1998. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • The orthometric height was determined by differential leveling. The vertical network tie was performed by a horz. field party for horz. obs reductions. Reset procedures were used to establish the elevation.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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