An interesting US Coast & Geodetic Survey and State Survey disk at the Denver City Building near the State Capitol.
From the NGS Datasheet: (
visit link)
"KK0358 DESIGNATION - 5233.25
KK0358 PID - KK0358
KK0358 STATE/COUNTY- CO/DENVER
KK0358 COUNTRY - US
KK0358 USGS QUAD - ENGLEWOOD (1997)
KK0358
KK0358 *CURRENT SURVEY CONTROL
KK0358 ______________________________________________________________________
KK0358* NAD 83(1986) POSITION- 39 44 23.75 (N) 104 59 27.39 (W) HD_HELD1
KK0358* NAVD 88 ORTHO HEIGHT - 1595.755 (meters) 5235.41 (feet) POSTED
KK0358 ______________________________________________________________________
KK0358 GEOID HEIGHT - -17.091 (meters) GEOID12B
KK0358 DYNAMIC HEIGHT - 1594.23 (meters) 5230.4 (feet) COMP
KK0358 MODELED GRAVITY - 979,615.0 (mgal) NAVD 88
KK0358
KK0358 VERT ORDER - * POSTED, SEE BELOW
KK0358
KK0358.The horizontal coordinates were determined by differentially corrected
KK0358.hand held GPS observations or other comparable positioning techniques
KK0358.and have an estimated accuracy of +/- 3 meters.
KK0358.
KK0358.The orthometric height was determined by differential leveling
KK0358.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
KK0358
KK0358.* This is a POSTED BENCH MARK height.
KK0358
KK0358.Significant digits in the geoid height do not necessarily reflect accuracy.
KK0358.GEOID12B height accuracy estimate available here.
KK0358
KK0358.Photographs are available for this station.
KK0358
KK0358.The dynamic height is computed by dividing the NAVD 88
KK0358.geopotential number by the normal gravity value computed on the
KK0358.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
KK0358.degrees latitude (g = 980.6199 gals.).
KK0358
KK0358.The modeled gravity was interpolated from observed gravity values.
KK0358
KK0358; North East Units Estimated Accuracy
KK0358;SPC CO C - 516,576.2 958,036.4 MT (+/- 3 meters HH1 GPS)
KK0358
KK0358_U.S. NATIONAL GRID SPATIAL ADDRESS: 13SED0077698892(NAD 83)
KK0358
KK0358 SUPERSEDED SURVEY CONTROL
KK0358
KK0358 NGVD 29 (??/??/92) 1594.840 (m) 5232.40 (f) ADJ UNCH 1 2
KK0358
KK0358.Superseded values are not recommended for survey control.
KK0358
KK0358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
KK0358.See file dsdata.pdf to determine how the superseded data were derived.
KK0358
KK0358_MARKER: DD = SURVEY DISK
KK0358_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
KK0358_SP_SET: STEPS
KK0358_STAMPING: 5233.25
KK0358_MARK LOGO: CGS+SS
KK0358_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
KK0358_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
KK0358+SATELLITE: SATELLITE OBSERVATIONS - June 27, 2009
KK0358
KK0358 HISTORY - Date Condition Report By
KK0358 HISTORY - 1934 MONUMENTED COGS
KK0358 HISTORY - 1939 GOOD CGS
KK0358 HISTORY - 20041231 GOOD GEOCAC
KK0358 HISTORY - 20060611 GOOD USPSQD
KK0358 HISTORY - 20090627 GOOD GEOCAC
KK0358 HISTORY - 20100806 GOOD GEOCAC
KK0358
KK0358 STATION DESCRIPTION
KK0358
KK0358'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
KK0358'AT DENVER.
KK0358'AT DENVER, DENVER COUNTY, ON WEST COLFAX AVENUE, AT THE NORTH
KK0358'MAIN ENTRANCE TO THE CITY AND COUNTY BUILDING, 12 FEET NORTH
KK0358'OF THE NORTH WALL, 5 FEET EAST OF THE CENTER OF THE ENTRANCE,
KK0358'AND IN THE TOP OF THE NORTHEAST END OF THE FIRST STEP. A STATE
KK0358'SURVEY STANDARD DISK, STAMPED 5233.25.
KK0358
KK0358 STATION RECOVERY (2004)
KK0358
KK0358'RECOVERY NOTE BY GEOCACHING 2004 (BMC)
KK0358'MARK RECOVERED IN GOOD CONDITION.
KK0358
KK0358 STATION RECOVERY (2006)
KK0358
KK0358'RECOVERY NOTE BY US POWER SQUADRON 2006
KK0358'RECOVERED IN GOOD CONDITION.
KK0358
KK0358 STATION RECOVERY (2009)
KK0358
KK0358'RECOVERY NOTE BY GEOCACHING 2009 (LPC)
KK0358'RECOVERED IN GOOD CONDITION.
KK0358
KK0358 STATION RECOVERY (2010)
KK0358
KK0358'RECOVERY NOTE BY GEOCACHING 2010 (GAH)
KK0358'UPDATED HH POSITION RESOLVES TO WRONG SIDE OF W COLFAX AND IS NEAR
KK0358'EAST TIP OF GRASSY AREA AROUND BUILDING IN TRIANGLE FORMED BY COLFAX,
KK0358'14TH ST AND COURT PL.
KK0358'LOCATION IS ROUGHLY 133 FEET NORTHEASTERLY OF ACTUAL POSITION.
KK0358'A CLOSER ESTIMATE, THOUGH PERHAPS STILL NOT EXACT DUE TO PROXIMITY OF
KK0358'BUILDING, IS N 39.739860 W 104.990972
KK0358'TEXT DESCRIPTION SHOULD GET YOU TO THIS ONE EASILY."