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BL1169 - "R 88" bench mark disk - The Woodlands, TX
Posted by: Groundspeak Premium Member Raven
N 30° 14.058 W 095° 27.334
15R E 263688 N 3347298
Quick Description: This benchmark is located on a culvert by the railroad tracks just west of Sherwood Circle as it turns North-South to East-West near The Woodlands, Texas.
Location: Texas, United States
Date Posted: 10/17/2019 9:27:46 AM
Waymark Code: WM11FZ2
Published By: Groundspeak Premium Member Ernmark
Views: 0

Long Description:
As described by the NGS in 1973 (although already monumented by the CGS back in 1932):

"[...] SET IN THE TOP CENTER OF THE WEST CONCRETE HEADWALL TO A LARGE DOUBLE 36-INCH PIPE CULVERT UNDER THE RAILROAD, 138.6 FEET WEST AND ACROSS THE TRACKS FROM THE NORTHWEST CORNER OF THE CONROE TELEPHONE CO. - RIVERBROOK EXCHANGE, BRICK BUILDING, 13.2 FEET WEST OF THE WEST RAIL, AND ABOUT 2 FEET BELOW THE LEVEL OF THE RAIL."

The NGS description is still pretty accurate, and so are the distance estimates from the rail tracks and the old brick building.

The NGS' currently posted coordinates ("N 30 14 03.5 W 095 27 20.0") seemed reasonably accurate as well: my measurements were "N 30° 14.058 W 95° 27.334" based on 10+ readings within 10' accuracy.

The station was recovered in good condition.

---

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

BL1169 ***********************************************************************
BL1169 DESIGNATION - R 88
BL1169 PID - BL1169
BL1169 STATE/COUNTY- TX/MONTGOMERY
BL1169 COUNTRY - US
BL1169 USGS QUAD - TAMINA (1979)
BL1169
BL1169 *CURRENT SURVEY CONTROL
BL1169 ______________________________________________________________________
BL1169* NAD 83(1986) POSITION- 30 14 03.5 (N) 095 27 20.0 (W) HD_HELD2
BL1169* NAVD 88 ORTHO HEIGHT - 37.113 (meters) 121.76 (feet) ADJUSTED
BL1169 ______________________________________________________________________
BL1169 GEOID HEIGHT - -27.545 (meters) GEOID18
BL1169 DYNAMIC HEIGHT - 37.064 (meters) 121.60 (feet) COMP
BL1169 MODELED GRAVITY - 979,308.9 (mgal) NAVD 88
BL1169 OBS GRAVITY - 979,308.9 (mgal) GRAV_OBS
BL1169 VERT ORDER - FIRST CLASS I
BL1169
BL1169_MARKER: DB = BENCH MARK DISK
BL1169_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
BL1169_SP_SET: HEADWALL
BL1169_STAMPING: R 88 1932 122.631
BL1169_MARK LOGO: CGS
BL1169_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
BL1169+STABILITY: SURFACE MOTION
BL1169_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
BL1169+SATELLITE: SATELLITE OBSERVATIONS - September 29, 2005
BL1169
BL1169 HISTORY - Date Condition Report By
BL1169 HISTORY - 1932 MONUMENTED CGS
BL1169 HISTORY - 1973 GOOD NGS
BL1169 HISTORY - 1978 GOOD NGS
BL1169 HISTORY - 1987 GOOD NGS
BL1169 HISTORY - 20040420 GOOD ENGLE
BL1169 HISTORY - 20050929 GOOD USPSQD
Condition: Mark found in good condition

Designation: R 88 (or "R88 1932", if one goes by the actual stamping)

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: BENCH MARK (or B.M.) Disk

County: Montgomery county, Texas

USGS 7.5' Topographic Quadrangle Name (optional): Tamina

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: BL1169

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 BL1169 - "R 88" bench mark disk - The Woodlands, TX 8/30/2019 Raven visited it