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Details for Benchmark: AX0221

N 29° 58.177 W 096° 02.449 (NAD 83)

Altitude: 168

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

Location:
In WALLER county, TX View Original Datasheet
Designation:
MONA
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

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Recovered as described in good condition. Looked for MONA RM2, but not found.

[Photos:]
photoAX0221
photoAX0221 setting

Found for 2006 Benchmark Contest.

[Photos:]
photoDisk Closeup
photoMonument Area

Recovered mark by almost tripping over it while trying to redo measurements. First measurements based on church corner, FM road and MONA RM1 did not make any sense. was re-measuring based on a different corner of the church building and found the mark at less than half the distance expected, but within a reasonable radius of RM1's measurement. No way to find out if church has been expanded in recent years that would account for change in measurements.

Note from LOCENG (DLO) 1985 stated that MONA RM1 was moved to 38 feet SW of FM 359 10 feet NE of drive, but compared to the 50 feet E of FM 359 14 feet N of drive as stated in 1954 monumenting info the measurements come out to the same location. So, based on that evaluation, MONA RM1 has not moved.

(NOTE: SUBMITTED TO NGS as below)
Remeasured as follows--
36.5 feet NW of church bell stand, 70.9 feet NE of MONA RM1, 91.5 feet E of centerline of FM 359.

MONA RM1 located as described in 1954. Marker does not appear to have been moved based on both 1954 AX0221 description and 1954 AX0220 description.

MONA RM2 (AX0222) not found.

MONA AZ (AX0223) found previously in poor condition as stated in data sheet for that marker.

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1954 (HSC) THE STATION IS LOCATED ABOUT 14 MILES EAST OF BELLVILLE AND 9 MILES SOUTH-SOUTHEAST OF HEMPSTEAD IN THE ST. THOMAS METHODIST EPISCOPAL CHURCH YARD. TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 290 AND STATE HIGHWAY 159 IN HEMPSTEAD, GO EASTERLY ON U.S. HIGHWAY 290 FOR 2.5 MILES TO FARM ROAD 359 TO THE RIGHT. TURN RIGHT, GO SOUTHERLY 7.3 MILES TO THE AZIMUTH MARK ON THE RIGHT. CONTINUE SOUTHERLY 0.4 MILE TO CHURCH AND STATION ON LEFT. THE STATION MARK, A STANDARD DISK, STAMPED MONA 1954 IS SET IN A CONCRETE MONUMENT THAT PROJECTS 8 INCHES AND IS 107.5 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE CHURCH, 100 FEET EAST OF THE CENTER LINE OF FARM ROAD 359 AND 4 FEET WEST OF A WITNESS POST. REFERENCE MARK 1, A STANDARD DISK STAMPED MONA NO 1 1954 IS SET IN A CONCRETE MONUMENT THAT PROJECTS 4 INCHES AND IS 52 FEET EAST OF THE CENTER LINE OF FARM ROAD 359, 12 FEET NORTH OF THE CENTER LINE OF THE CHURCH DRIVEWAY AND 2 FEET EAST OF A TELEPHONE POLE. REFERENCE MARK 2, A STANDARD DISK STAMPED MONA NO 2 1954 IS SET IN A CONCRETE MONUMENT THAT PROJECTS 8 INCHES AND IS 52 FEET EAST OF THE CENTER LINE OF FARM ROAD 359 AND 2 FEET SOUTHWEST OF A FENCE CORNER. THE AZIMUTH MARK, A STANDARD DISK STAMPED MONA 1954 IS SET IN A CONCRETE MONUMENT THAT PROJECTS 14 INCHES AND IS 52 FEET WEST OF THE CENTER LINE OF FARM ROAD 359, 3 FEET SOUTH OF A GATE POST AND A WITNESS POST AND 2 FEET EAST OF A WIRE FENCE. HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
01/01/1954 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (HDR) 2.45 MILES EAST ALONG U.S. HIGHWAY 290 FROM THE COURTHOUSE AT HEMPSTEAD, THENCE 7.75 MILES SOUTH ALONG FARM ROAD 359, 89 FEET EAST OF THE CENTER LINE OF THE FARM ROAD, 105 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE MONAVILLE CHURCH, 4 FEET WEST OF A WITNESS POST, A TRIANGULATION STATION DISK SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.6 FOOT ABOVE THE GROUND, STAMPED MONA 1954. MONA R.M. 1 IS 61.5 FEET SOUTHWEST OF TRIANGULATION STATION MONA 1954, 50 FEET EAST OF THE CENTER LINE OF THE FARM ROAD, 14 FEET NORTH OF THE CENTER LINE OF A DRIVEWAY LEADING TO A CHURCH, 2 FEET EAST OF A TELEPHONE POLE, A REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.3 FOOT ABOVE THE GROUND, STAMPED MONA NO 1 1954. MONA R.M. 2 IS 89.3 FEET NORTH OF TRIANGULATION STATION MONA 1954, 51 FEET EAST OF THE CENTER LINE OF THE FARM ROAD, 2 FEET SOUTHWEST OF A FENCE CORNER, A REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.6 FOOT ABOVE THE GROUND, STAMPED MONA NO 2 1954. MONA 1954 AZIMUTH IS 0.4 MILE NORTH OF TRIANGULATION STATION MONA 1954, 50 FEET WEST OF THE CENTER LINE OF FARM ROAD 359, 33 FEET SOUTH OF THE CENTER OF A STEEL GATE, 1.2 FEET EAST OF A FENCE, 2.9 FEET SOUTH OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.7 FOOT ABOVE THE GROUND, STAMPED MONA 1954.
01/01/1954 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 10.2 MI S FROM HEMPSTEAD. 2.45 MILES EAST ALONG U.S. HIGHWAY 290 FROM THE COURTHOUSE AT HEMPSTEAD, THENCE 7.75 MILES SOUTH ALONG FARM ROAD 359, 89 FEET EAST OF THE CENTER LINE OF THE FARM ROAD, 105 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE MONAVILLE CHURCH, 4 FEET WEST OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.6 FOOT ABOVE THE GROUND.
01/01/1985 by LOCENG (MARK NOT FOUND)
RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1985 (DLO) MONA NO. 1 1954 FOUND GOOD. RM 1 MONUMENT IS UP ROOTED AND NOT AT CORRECT LOCATION USING WALLER COUNTY, TEXAS MAP. MONUMENT IS SET IN AND APPROXIMATELY 1 CUBIC FOOT CONCRETE BLOCK. LOCATION OF MONUMENT IS APPROXIMATELY 38 FEET SE OF CENTER HWY 359 ALONG SERVICE ROAD TO CHURCH NEAREST ORIGINAL LOCATION OF MONUMENT AND APPROXIMATELY 10 FEET NE OF CENTER OF SAME SERVICE ROAD.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in February 1996.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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