AW2339 - "N 54" bench mark disk - Houston, TX
Posted by: Groundspeak Premium Member Raven
N 29° 45.469 W 095° 21.682
15R E 271667 N 3294286
Quick Description: This benchmark is located by the northwest corner of a Military Entrance Processing Station (a.k.a. the "old US Custom House building") in downtown Houston, Texas.
Location: Texas, United States
Date Posted: 4/22/2015 12:26:41 PM
Waymark Code: WMNR24
Published By: Groundspeak Premium Member Ernmark
Views: 0

Long Description:
As described by the National Geodetic Survey in 1996 (although already monumented by the CGS back in 1918):

"IN HOUSTON, AT THE INTERSECTION OF NORTH SAN JACINTO AND CAPITOL STREETS, SET VERTICALLY IN THE NORTHWEST FACE OF THE [old] POST OFFICE, 26.5 M (86.9 FT) SOUTHWEST OF THE CENTER OF CAPITOL STREET, 24.3 M (79.7 FT) SOUTHEAST OF THE CENTER OF SAN JACINTO, 9.1 M (29.9 FT) NORTHEAST OF THE CENTER OF THE MOST NORTHEASTERLY OF 2 ENTRANCES, 1.4 M (4.6 FT) ABOVE THE LEVEL OF A SIDEWALK, AND 0.8 M (2.6 FT) SOUTHWEST OF THE NORTH CORNER OF THE BUILDING."

The 1996 description (which supersedes an older 1973 NGS description) and its associated reference points -- i.e. distances/directions -- are still good references for locating this station; just one minor correction might be in order:
* the "POST OFFICE" reference is no longer valid, the building is better known as the "old US Custom House", and is currently used as a Military Entrance Processing Station.

That said, the station's associated NGS Data Sheet's posted coordinates seem to be a little off, at least at the time of this waymark's posting. Its most recent associated NGS Data Sheet reports it as "N 29 45 27.96 W 095 21 41.16" (i.e. "N 29° 45.466 W 95° 21.686"), which points to a location ~30 ft away from the actual BM. The actual coordinates, as measured within 10' accuracy and 20+ reading averages, were "N 29° 45.469 W 095° 21.682".

The station was recovered in good condition; see posted waymark's gallery images for BM close-up and setting details. Some additional pictures are also available on the NGS website itself.

---

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

AW2339 ***********************************************************************
AW2339 DESIGNATION - N 54
AW2339 PID - AW2339
AW2339 STATE/COUNTY- TX/HARRIS
AW2339 COUNTRY - US
AW2339 USGS QUAD - SETTEGAST (1995)
AW2339
AW2339 *CURRENT SURVEY CONTROL
AW2339 ______________________________________________________________________
AW2339* NAD 83(1986) POSITION- 29 45 27.96 (N) 095 21 41.16 (W) HD_HELD1
AW2339* NAVD 88 ORTHO HEIGHT - 15.352 (meters) 50.37 (feet) ADJUSTED
AW2339 ______________________________________________________________________
AW2339
AW2339_MARKER: DB = BENCH MARK DISK
AW2339_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
AW2339_SP_SET: BUILDING WALL
AW2339_STAMPING: N 54 1918 ELEV 57.08 FT
AW2339_MARK LOGO: CGS
AW2339_MAGNETIC: N = NO MAGNETIC MATERIAL
AW2339_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
AW2339+STABILITY: POSITION/ELEVATION WELL
AW2339_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
AW2339+SATELLITE: SATELLITE OBSERVATIONS - August 10, 2014
AW2339
AW2339 HISTORY - Date Condition Report By
AW2339 HISTORY - 1918 MONUMENTED CGS
AW2339 HISTORY - 1973 GOOD NGS
AW2339 HISTORY - 1975 GOOD LOCSUR
AW2339 HISTORY - 1978 GOOD NGS
AW2339 HISTORY - 1983 GOOD NGS
AW2339 HISTORY - 1984 GOOD USPSQD
AW2339 HISTORY - 1986 GOOD NGS
AW2339 HISTORY - 1987 GOOD USPSQD
AW2339 HISTORY - 1987 GOOD USPSQD
AW2339 HISTORY - 1987 GOOD USPSQD
AW2339 HISTORY - 19870601 GOOD USPSQD
AW2339 HISTORY - 1988 GOOD USPSQD
AW2339 HISTORY - 1988 GOOD USPSQD
AW2339 HISTORY - 1989 GOOD USPSQD
AW2339 HISTORY - 1989 GOOD USPSQD
AW2339 HISTORY - 1989 GOOD USPSQD
AW2339 HISTORY - 1991 GOOD USPSQD
AW2339 HISTORY - 19960206 GOOD NGS
AW2339 HISTORY - 19960921 GOOD USPSQD
AW2339 HISTORY - 20040517 GOOD USPSQD
AW2339 HISTORY - 20050705 GOOD USPSQD
AW2339 HISTORY - 20070323 GOOD USPSQD
AW2339 HISTORY - 20140810 GOOD GEOCAC
Condition: Mark found in good condition

Designation: N54

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: Disk (unspecified type)

County: Houston, Harris County

USGS 7.5' Topographic Quadrangle Name: Settegast

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: AW2339

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

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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Recent Visits/Logs:
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Raven visited AW2339 - "N 54" bench mark disk - Houston, TX 3/22/2013 Raven visited it