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Details for Benchmark: LW1013

N 41° 28.867 W 071° 30.900 (NAD 83)

Altitude: 203.77

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In WASHINGTON county, RI View Original Datasheet
Designation:
E 23
Marker Type:
bench mark disk
Setting:
in a boulder
Stability:
May hold, but of type commonly subject to surface motion.

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Documented History (by the NGS)

01/01/1969 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1969 0.3 MI E FROM KENYON. ABOUT 0.3 MILE EAST ALONG STATE HIGHWAY 138 FROM THE JUNCTION OF STATE HIGHWAY 108 AT KINGSTON, SET ON THE TOP AND AT THE HIGHEST POINT OF A 6-BY-4-FOOT BURIED BOULDER WHICH PROJECTS 1 1/2 FEET ABOVE THE GROUND, 310 FEET EAST OF THE CENTER LINE OF A DRIVEWAY LEADING NORTH TO A LARGE TWO-STORIED RESIDENCE, 27 1/2 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 46 FEET NORTHEAST OF POWER LINE POLE NO. 3075, NEAR THE EAST END OF A ROW OF EVERGREEN TREES AND 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY. NOTE-- MARK IS ON PRIVATE PROPERTY. PREMISSION GRANTED TO ESTABLISH SAME.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (AFA) RECOVERED IN GOOD CONDITION.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (FW) RECOVERED IN GOOD CONDITION.
10/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (WW) RECOVERED IN GOOD CONDITION.
01/01/1989 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1989 (AFA) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (FW) RECOVERED IN GOOD CONDITION.
09/21/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.