TU0512 - "W 15" bench mark disk - Kahuku, HI - U.S. Benchmarks on Waymarking.com

As described by the US Coast and Geodetic Survey ("CGS") back in 1969:

"4.5 MILES NORTHWEST [of Kahuku] ALONG STATE HIGHWAY 83 FROM THE KAHUKU PLANTATION COMPANY HEADQUARTERS AT KAHUKU, IN THE NORTH END OF THE WEST CONCRETE WING WALL OF A BRIDGE OVER KAWELA STREAM, 15.0 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 1.2 FEET NORTH OF THE NORTH CONCRETE BANISTER OF THE BRIDGE, AND ABOUT LEVEL WITH THE HIGHWAY."

The CGS description is still quite accurate and should definitely assist future seekers in finding this benchmark -- alternatively, one can use the gallery images for any future attempt at actual recovery.

The station was recovered in very good condition. Likewise, the NGS' currently posted coordinates (N 21° 41.701 W 158° 0.585) are perfectly in line with my observations, as measured within 10' accuracy and 10+ reading averages. (FYI: the coordinates on www.geocaching.com are off and place the station in the middle of the road, but that's irrelevant at this point since the NGS database has accurate readings by now).

Below are some additional facts, per the NGS database (with some editing for length): (visit link)

TU0512 ***********************************************************************
TU0512 DESIGNATION - W 15
TU0512 PID - TU0512
TU0512 STATE/COUNTY- HI/HONOLULU
TU0512 COUNTRY - US
TU0512 USGS QUAD - KAHUKU (1983)
TU0512
TU0512 *CURRENT SURVEY CONTROL
TU0512 ______________________________________________________________________
TU0512* NAD 83(1986) POSITION- 21 41 42.06 (N) 158 00 35.10 (W) HD_HELD1
TU0512* LMSL ORTHO HEIGHT - 2.883 (meters) 9.46 (feet) ADJ UNCH
TU0512 ______________________________________________________________________
TU0512
TU0512_MARKER: DB = BENCH MARK DISK
TU0512_SETTING: 36 = SET IN A MASSIVE STRUCTURE
TU0512_SP_SET: BRIDGE
TU0512_STAMPING: W 15 1969
TU0512_MARK LOGO: CGS
TU0512_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
TU0512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
TU0512+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2005
TU0512
TU0512 HISTORY - Date Condition Report By
TU0512 HISTORY - 1969 MONUMENTED CGS
TU0512 HISTORY - 20050607 GOOD TERRSV
TU0512 HISTORY - 20130728 GOOD GEOCAC

Condition: Mark found in good condition Designation: W 15 (stamped as "W 15 1969") Benchmark Agency: U.S. Coast & Geodetic Survey Monumentation type: BENCH MARK (or B.M.) Disk County: Honolulu County (island of Oahu) USGS 7.5' Topographic Quadrangle Name (optional): Kahuku Find type: Coordinates and/or to-reach information from the NGS database (or Geocaching's copy of it) were used Web address of this benchmark's datasheet (optional): [Web Link] NGS PID: TU0512 Benchmark Agency (if other): Not listed Monumentation type (if other): Not listed Special category (optional): Not listed Special Category (if other): Not listed Local database's URL (optional): Not listed

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Date Logged Log User Rating   04/10/2017 Raven visited it