AW5611 - "T 1512" metal rod - Humble, TX
Posted by: Groundspeak Premium Member Raven
N 29° 59.949 W 095° 14.432
15R E 283876 N 3320804
This benchmark is located by the SW guard rail of FM-1960 when crossing Jordan Gully, in Humble, Texas.
Waymark Code: WMXJR5
Location: Texas, United States
Date Posted: 01/20/2018
Published By:Groundspeak Premium Member Ernmark
Views: 0

As described by the NGS in 1987:

"ALONG FARM ROAD 1960 [...] IN HUMBLE, 19.5 M (64.0 FT) EAST OF THE WEST END OF A GUARDRAIL, 15.8 M (51.8 FT) WEST OF THE SOUTH END OF THE WEST ABUTMENT OF A ROAD BRIDGE SPANNING JORDAN GULLY, 6.0 M (19.7 FT) SOUTH OF THE CENTERLINE OF THE EAST BOUND LANES OF THE ROAD, 1.2 M (3.9 FT) EAST OF A UTILITY POLE WITH A GUY WIRE, AND 0.5 M (1.6 FT) SOUTH OF A GUARDRAIL. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS N FROM A WITNESS POST THE MARK IS ABOVE LEVEL WITH THE ROAD."

The 1987 NGS description is still pretty accurate: the mark is located at the SW end of FM-1960's bridge spanning Jordan Gully, right by the road's guardrail and 4 feet east of a utility pole. However, the witness post is no longer present... and the logo cap is missing.

The NGS' currently posted coordinates ("N 29 59 57.00 W 095 14 25.95", or "N 29° 59.950 W 95° 14.433") were reasonably in line with my observations: my measurements came out to "N 29° 59.949 W 95° 14.432", as measured within 10' accuracy and 10+ reading averages (read: our respective measurements differ by about 6 or 7 feet).

The station was recovered in "decent" condition. The logo cap is missing, and I had to dig quite deep into the sleeve before finding the rod.. but the rod was luckily still in very good condition.

---

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

AW5611 ***********************************************************************
AW5611 DESIGNATION - E 1512
AW5611 PID - AW5611
AW5611 STATE/COUNTY- TX/HARRIS
AW5611 COUNTRY - US
AW5611 USGS QUAD - HARMASTON (1982)
AW5611
AW5611 *CURRENT SURVEY CONTROL
AW5611 ______________________________________________________________________
AW5611* NAD 83(1986) POSITION- 29 59 57.00 (N) 095 14 25.95 (W) HD_HELD1
AW5611* NAVD 88 ORTHO HEIGHT - 20.663 (meters) 67.79 (feet) ADJUSTED
AW5611 ______________________________________________________________________
AW5611 GEOID HEIGHT - -27.420 (meters) GEOID12B
AW5611 DYNAMIC HEIGHT - 20.635 (meters) 67.70 (feet) COMP
AW5611 MODELED GRAVITY - 979,294.8 (mgal) NAVD 88
AW5611
AW5611_MARKER: I = METAL ROD
AW5611_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
AW5611_STAMPING: E 1512 1987
AW5611_MARK LOGO: NGS
AW5611_PROJECTION: FLUSH
AW5611_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
AW5611_ROD/PIPE-DEPTH: 11.0 meters
AW5611
AW5611 HISTORY - Date Condition Report By
AW5611 HISTORY - 1987 MONUMENTED NGS
AW5611 HISTORY - 19990916 GOOD USPSQD
AW5611 HISTORY - 20010730 GOOD NGS
Condition: Mark found in good condition

Designation: T 1512 (or "T 1512 1987", if one goes by its full stamping)

Benchmark Agency: National Geodetic Survey

Monumentation type: Metal Rod (under a hinged cover)

County: Harris County

USGS 7.5' Topographic Quadrangle Name (optional): Harmaston

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: AW5611

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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Raven visited AW5611 - "T 1512" metal rod - Humble, TX 11/19/2017 Raven visited it