QX0420 ***********************************************************************
QX0420  DESIGNATION -  G 4
QX0420  PID         -  QX0420
QX0420  STATE/COUNTY-  MT/GALLATIN
QX0420  USGS QUAD   -  THREE FORKS (1987)
QX0420
QX0420                         *CURRENT SURVEY CONTROL
QX0420  ___________________________________________________________________
QX0420* NAD 83(1986)-  45 55 46.     (N)    111 30 17.     (W)     SCALED
QX0420* NAVD 88     -      1231.960  (meters)    4041.86   (feet)  ADJUSTED
QX0420  ___________________________________________________________________
QX0420  GEOID HEIGHT-         -11.77  (meters)                     GEOID99
QX0420  DYNAMIC HT  -        1231.629 (meters)    4040.77  (feet)  COMP
QX0420  MODELED GRAV-     980,304.3   (mgal)                       NAVD 88
QX0420
QX0420  VERT ORDER  -  FIRST     CLASS II
QX0420
QX0420.The horizontal coordinates were scaled from a topographic map and have
QX0420.an estimated accuracy of +/- 6 seconds.
QX0420
QX0420.The orthometric height was determined by differential leveling
QX0420.and adjusted by the National Geodetic Survey in June 1991.
QX0420
QX0420.The geoid height was determined by GEOID99.
QX0420
QX0420.The dynamic height is computed by dividing the NAVD 88
QX0420.geopotential number by the normal gravity value computed on the
QX0420.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
QX0420.degrees latitude (g = 980.6199 gals.).
QX0420
QX0420.The modeled gravity was interpolated from observed gravity values.
QX0420
QX0420;                    North         East    Units  Estimated Accuracy
QX0420;SPC MT       -   188,630.      444,590.      MT  (+/- 180 meters Scaled)
QX0420
QX0420                          SUPERSEDED SURVEY CONTROL
QX0420
QX0420  NGVD 29     -      1230.937  (m)         4038.50   (f) ADJ UNCH    1 2
QX0420
QX0420.Superseded values are not recommended for survey control.
QX0420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
QX0420.See file dsdata.txt to determine how the superseded data were derived.
QX0420
QX0420_MARKER: P = PIPE CAP
QX0420_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
QX0420_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
QX0420
QX0420  HISTORY     - Date     Condition        Recov. By
QX0420  HISTORY     - UNK      MONUMENTED       LOCENG
QX0420  HISTORY     - 1958     GOOD             NGS
QX0420  HISTORY     - 1984     MARK NOT FOUND   USGS
QX0420
QX0420                          STATION DESCRIPTION
QX0420
QX0420''DESCRIBED BY NATIONAL GEODETIC SURVEY 1958
QX0420''5.8 MI NW FROM LOGAN.
QX0420''ABOUT 3.65 MILES NORTHWEST ALONG THE NORTHERN PACIFIC RAILWAY FROM THE
QX0420''STATION AT LOGAN, THENCE 2.05 MILES NORTH ALONG AN ASPHALT ROAD TO
QX0420''TRIDENT, IN SECTION 17, T 2 N, R 2 E, ABOUT 0.1 MILE NORTHWEST OF THE
QX0420''ASPHALT ROAD, 65 YARDS NORTHWEST OF A TRAIL ROAD, 49 FEET SOUTHEAST OF
QX0420''A DRY RIVER BED, 3 1/2 FEET WEST OF A WHITE WOODEN WITNESS POST, AND
QX0420''ON THE TOP OF A 4-INCH IRON PIPE WHICH PROJECTS 2 INCHES.
QX0420
QX0420                          STATION RECOVERY (1984)
QX0420
QX0420''RECOVERY NOTE BY US GEOLOGICAL SURVEY 1984
QX0420''MARK NOT FOUND.