This monel rivet is on the top of the leftmost of two round concrete pipe culverts under the tracks at E Compress Street at N Walnut Street in Hope AR.
From the NGS Datasheet: (
visit link)
"DL1045 DESIGNATION - RV 622
DL1045 PID - DL1045
DL1045 STATE/COUNTY- AR/HEMPSTEAD
DL1045 USGS QUAD - HOPE (1978)
DL1045
DL1045 *CURRENT SURVEY CONTROL
DL1045 ___________________________________________________________________
DL1045* NAD 83(1986)- 33 40 35. (N) 093 35 37. (W) SCALED
DL1045* NAVD 88 - 102.824 (meters) 337.35 (feet) ADJUSTED
DL1045 ___________________________________________________________________
DL1045 GEOID HEIGHT- -26.92 (meters) GEOID99
DL1045 DYNAMIC HT - 102.716 (meters) 336.99 (feet) COMP
DL1045 MODELED GRAV- 979,584.7 (mgal) NAVD 88
DL1045
DL1045 VERT ORDER - SECOND CLASS 0
DL1045
DL1045.The horizontal coordinates were scaled from a topographic map and have
DL1045.an estimated accuracy of +/- 6 seconds.
DL1045
DL1045.The orthometric height was determined by differential leveling
DL1045.and adjusted by the National Geodetic Survey in June 1991.
DL1045
DL1045.The geoid height was determined by GEOID99.
DL1045
DL1045.The dynamic height is computed by dividing the NAVD 88
DL1045.geopotential number by the normal gravity value computed on the
DL1045.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
DL1045.degrees latitude (G = 980.6199 gals.).
DL1045
DL1045.The modeled gravity was interpolated from observed gravity values.
DL1045
DL1045; North East Units Estimated Accuracy
DL1045;SPC AR S - 513,140. 252,230. MT (+/- 180 meters Scaled)
DL1045
DL1045 SUPERSEDED SURVEY CONTROL
DL1045
DL1045 NGVD 29 - 102.827 (m) 337.36 (f) ADJ UNCH 2 0
DL1045
DL1045.Superseded values are not recommended for survey control.
DL1045.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DL1045.See file dsdata.txt to determine how the superseded data were derived.
DL1045
DL1045_MARKER: R = RIVET
DL1045_SETTING: 30 = CULVERT
DL1045_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
DL1045
DL1045 HISTORY - Date Condition Recov. By
DL1045 HISTORY - UNK MONUMENTED MPRR
DL1045 HISTORY - 1963 GOOD NGS
DL1045
DL1045 STATION DESCRIPTION
DL1045
DL1045''DESCRIBED BY NATIONAL GEODETIC SURVEY 1963
DL1045''0.6 MI NW FROM HOPE.
DL1045''0.6 MILE NORTHWEST ALONG THE MISSOURI PACIFIC RAILROAD FROM THE
DL1045''STATION AT HOPE, HEMPSTEAD COUNTY, 9 POLES NORTHWEST OF MILEPOST 458,
DL1045''AT THE NORTHEAST CORNER OF THE LOUISIANA OIL CO. PLANT, 36 FEET SOUTH
DL1045''OF THE NORTH SWITCH TO THE SIDING, AT A 46- BY 42-INCH CONCRETE-PIPE
DL1045''CULVERT, IN THE CENTER OF THE TOP OF THE WEST BELL, AND 14 FEET WEST
DL1045''OF THE CENTERLINE OF THE TRACK. A STANDARD MONEL-METAL RIVET."