AX1046 ***********************************************************************
AX1046  DESIGNATION -  COLUMBUS BM
AX1046  PID         -  AX1046
AX1046  STATE/COUNTY-  TX/COLORADO
AX1046  USGS QUAD   -  COLUMBUS (1983)
AX1046
AX1046                         *CURRENT SURVEY CONTROL
AX1046  ___________________________________________________________________
AX1046* NAD 83(1986)-  29 42 25.     (N)    096 32 11.     (W)     SCALED
AX1046* NAVD 88     -        59.99   (+/-2cm)     196.8    (feet)  VERTCON
AX1046  ___________________________________________________________________
AX1046  GEOID HEIGHT-         -27.14  (meters)                     GEOID99
AX1046
AX1046  VERT ORDER  -  SECOND    CLASS 0 (See Below)
AX1046
AX1046.The horizontal coordinates were scaled from a topographic map and have
AX1046.an estimated accuracy of +/- 6 seconds.
AX1046
AX1046.The NAVD 88 height was computed by applying the VERTCON shift value to
AX1046.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
AX1046.The vertical order pertains to the superseded datum.
AX1046
AX1046.The geoid height was determined by GEOID99.
AX1046
AX1046;                    North         East    Units  Estimated Accuracy
AX1046;SPC TXSC     - 4,210,160.      838,360.      MT  (+/- 180 meters Scaled)
AX1046
AX1046                          SUPERSEDED SURVEY CONTROL
AX1046
AX1046  NGVD 29     -        59.97   (m)          196.8    (f) COMPUTED    2 0
AX1046
AX1046.Superseded values are not recommended for survey control.
AX1046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AX1046.See file dsdata.txt to determine how the superseded data were derived.
AX1046
AX1046_MARKER: DB = BENCH MARK DISK
AX1046_SETTING: 36 = ABUTMENT
AX1046_STAMPING: COLUMBUS 1934
AX1046_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
AX1046
AX1046  HISTORY     - Date     Condition        Recov. By
AX1046  HISTORY     - 1934     MONUMENTED       CGS
AX1046  HISTORY     - 1943     GOOD             NGS
AX1046  HISTORY     - 1987     GOOD             USPSQD
AX1046
AX1046                          STATION DESCRIPTION
AX1046
AX1046''DESCRIBED BY NATIONAL GEODETIC SURVEY 1943
AX1046''0.15 MI E FROM COLUMBUS.
AX1046''0.15 MILE EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT
AX1046''COLUMBUS, COLORADO COUNTY, 3 POLES WEST OF MILEPOST 84, AT THE LARGE
AX1046''STEEL RAILROAD BRIDGE OVER COLORADO RIVER, IN THE TOP OF THE NORTH END
AX1046''OF THE WEST ABUTMENT, 13.5 FEET NORTH OF THE CENTERLINE OF THE TRACK,
AX1046''AND ABOUT 6-1/2 FEET LOWER THAN THE TRACK.  A STANDARD DISK, STAMPED
AX1046''COLUMBUS 1934.
AX1046
AX1046                          STATION RECOVERY (1987)
AX1046
AX1046''RECOVERY NOTE BY US POWER SQUADRON 1987 (GES)
AX1046''RECOVERED IN GOOD CONDITION.