NGS Data sheets - Shutdown

geocaching.com

On this site there is a link to search for benchmarks that allows Point ID as a search choice. I have found many datasheets on this site.

Hope it helps.

Happy New Year!

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I downloaded all the CA datasheets just before the shutdown, so if anyone needs one, let me know.

https://www.geocaching.com/mark/details.aspx?PID=jb1371

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Here is the link to the datasheet.

JB1371 ***********************************************************************
JB1371  DESIGNATION -  T 147
JB1371  PID         -  JB1371
JB1371  STATE/COUNTY-  IL/ST CLAIR
JB1371  USGS QUAD   -  O''FALLON (1991)
JB1371
JB1371                         *CURRENT SURVEY CONTROL
JB1371  ___________________________________________________________________
JB1371* NAD 83(1986)-  38 36 00.     (N)    089 57 57.     (W)     SCALED
JB1371* NAVD 88     -       171.440  (meters)     562.47   (feet)  ADJUSTED
JB1371  ___________________________________________________________________
JB1371  GEOID HEIGHT-         -30.79  (meters)                     GEOID99
JB1371  DYNAMIC HT  -         171.331 (meters)     562.11  (feet)  COMP
JB1371  MODELED GRAV-     979,990.6   (mgal)                       NAVD 88
JB1371
JB1371  VERT ORDER  -  FIRST     CLASS I
JB1371
JB1371.The horizontal coordinates were scaled from a topographic map and have
JB1371.an estimated accuracy of +/- 6 seconds.
JB1371
JB1371.The orthometric height was determined by differential leveling
JB1371.and adjusted by the National Geodetic Survey in June 1991.
JB1371.WARNING-Repeat measurements at this control monument indicate possible
JB1371.vertical movement.
JB1371
JB1371.The geoid height was determined by GEOID99.
JB1371
JB1371.The dynamic height is computed by dividing the NAVD 88
JB1371.geopotential number by the normal gravity value computed on the
JB1371.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
JB1371.degrees latitude (g = 980.6199 gals.).
JB1371
JB1371.The modeled gravity was interpolated from observed gravity values.
JB1371
JB1371;                    North         East    Units  Estimated Accuracy
JB1371;SPC IL W     -   214,590.      717,490.      MT  (+/- 180 meters Scaled)
JB1371
JB1371                          SUPERSEDED SURVEY CONTROL
JB1371
JB1371  NGVD 29     -       171.555  (m)          562.84   (f) ADJ UNCH    1 1
JB1371
JB1371.Superseded values are not recommended for survey control.
JB1371.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
JB1371.See file dsdata.txt to determine how the superseded data were derived.
JB1371
JB1371_MARKER: DB = BENCH MARK DISK
JB1371_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
JB1371_STAMPING: T 147 1949
JB1371_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
JB1371+STABILITY: SURFACE MOTION
JB1371
JB1371  HISTORY     - Date     Condition        Recov. By
JB1371  HISTORY     - 1949     MONUMENTED       CGS
JB1371  HISTORY     - 1969     GOOD             NGS
JB1371
JB1371                          STATION DESCRIPTION
JB1371
JB1371''DESCRIBED BY NATIONAL GEODETIC SURVEY 1969
JB1371''3.1 MI W FROM O FALLON.
JB1371''ABOUT 3.1 MILES WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
JB1371''THE STATION AT OFALLON, 70 FEET SOUTHWEST OF THE CENTER OF A
JB1371''BLACK TOPPED ROAD CROSSING, 63 FEET WEST OF THE CENTER LINE OF THE
JB1371''ROAD, 40.1 FEET SOUTH OF THE SOUTH RAIL, 11 FEET EAST OF MILEPOLE
JB1371''323-17, 2 FEET NORTH OF A LINE OF POLES, 1.7 FEET EAST OF A METAL
JB1371''WITNESS POST, ABOUT LEVEL WITH THE TRACK AND SET IN THE TOP OF
JB1371''A CONCRETE POST PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.
JB1371''SEC 22, T 2N, R 8W.

Many Thanks!?ÿ

Note that geocaching has a snapshot from about 2000 and does not update them.?ÿ So you won't find NAD83(2011) coords, geoid updates, or newer marks.

At this point I am mostly interested in the ties to see if it is still there