MG0046 ***********************************************************************
MG0046  DESIGNATION -  A 53
MG0046  PID         -  MG0046
MG0046  STATE/COUNTY-  IL/HENRY
MG0046  USGS QUAD   -  GREEN ROCK (1992)
MG0046
MG0046                         *CURRENT SURVEY CONTROL
MG0046  ___________________________________________________________________
MG0046* NAD 83(1986)-  41 28 53.     (N)    090 21 12.     (W)     SCALED
MG0046* NAVD 88     -       179.293  (meters)     588.23   (feet)  ADJUSTED
MG0046  ___________________________________________________________________
MG0046  GEOID HEIGHT-         -32.84  (meters)                     GEOID99
MG0046  DYNAMIC HT  -         179.223 (meters)     588.00  (feet)  COMP
MG0046  MODELED GRAV-     980,233.7   (mgal)                       NAVD 88
MG0046
MG0046  VERT ORDER  -  SECOND    CLASS 0
MG0046
MG0046.The horizontal coordinates were scaled from a topographic map and have
MG0046.an estimated accuracy of +/- 6 seconds.
MG0046
MG0046.The orthometric height was determined by differential leveling
MG0046.and adjusted by the National Geodetic Survey in June 1991.
MG0046
MG0046.The geoid height was determined by GEOID99.
MG0046
MG0046.The dynamic height is computed by dividing the NAVD 88
MG0046.geopotential number by the normal gravity value computed on the
MG0046.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
MG0046.degrees latitude (g = 980.6199 gals.).
MG0046
MG0046.The modeled gravity was interpolated from observed gravity values.
MG0046
MG0046;                    North         East    Units  Estimated Accuracy
MG0046;SPC IL W     -   534,500.      684,410.      MT  (+/- 180 meters Scaled)
MG0046
MG0046                          SUPERSEDED SURVEY CONTROL
MG0046
MG0046  NGVD 29     -       179.372  (m)          588.49   (f) ADJ UNCH    2 0
MG0046
MG0046.Superseded values are not recommended for survey control.
MG0046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
MG0046.See file dsdata.txt to determine how the superseded data were derived.
MG0046
MG0046_MARKER: DB = BENCH MARK DISK
MG0046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
MG0046_STAMPING: A 53 1934
MG0046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
MG0046+STABILITY: SURFACE MOTION
MG0046
MG0046  HISTORY     - Date     Condition        Recov. By
MG0046  HISTORY     - 1934     MONUMENTED       CGS
MG0046  HISTORY     - 19880329 MARK NOT FOUND   USPSQD
MG0046  HISTORY     - 19960717 MARK NOT FOUND   USPSQD
MG0046
MG0046                          STATION DESCRIPTION
MG0046
MG0046''DESCRIBED BY COAST AND GEODETIC SURVEY 1934
MG0046''AT COLONA.
MG0046''AT COLONA, HENRY COUNTY, ON THE CHICAGO, BURLINGTON AND QUINCY
MG0046''RAILROAD, 200 FEET SOUTHWEST OF THE STATION, 4 POLES SOUTHEAST
MG0046''OF A SIGNAL TOWER, AT A ROAD CROSSING, 42 FEET SOUTHWEST OF THE
MG0046''CENTERLINE OF THE TRACK, 30 FEET SOUTH OF THE CENTERLINE OF THE
MG0046''ROAD, AND ONE FOOT SOUTH OF A FENCE LINE.  A STANDARD DISK,
MG0046''STAMPED A 53 1934 AND SET IN THE TOP OF A CONCRETE POST.
MG0046
MG0046                          STATION RECOVERY (1988)
MG0046
MG0046''RECOVERY NOTE BY US POWER SQUADRON 1988 (JEB)
MG0046''MARK NOT FOUND.
MG0046
MG0046                          STATION RECOVERY (1996)
MG0046
MG0046''RECOVERY NOTE BY US POWER SQUADRON 1996
MG0046''MARK NOT FOUND.