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Details for Benchmark: LW5730

N 41° 29.349 W 071° 31.297 (NAD 83)

Altitude: 246

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

Location:
In WASHINGTON county, RI View Original Datasheet
Designation:
UNIVERSITY
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Found a survey disc in this location, but not a metal rod. Don't know if it's the same thing.

[Photos:]
photoDSC02293.JPG
Had to clean the dirt off of it, may update picture when I have more than just my hands to clean it off.

Documented History (by the NGS)

01/01/1987 by AEROS (MONUMENTED)
DESCRIBED BY AERO SERVICE CORPORATION 1987 ON THE CAMPUS OF THE UNIVERSITY OF RHODE ISLAND IN SOUTH KINGSTOWN RI. TO REACH FROM THE INTERSECTION OF RTE 138 AND NORTH ROAD IN KINGSTON, GO NORTH ON NORTH ROAD 1.04 KM (0.65 MI) TO FLAGG ROAD, TURN LEFT AND GO WEST ON FLAGG ROAD 0.16 KM (0.10 MI) TO THE ENTRANCE OF A PARKING AREA ON THE LEFT AND THE STATION. NOTE NEARBY BLUE WATER TANK IS ON THE NORTHEAST SIDE OF FLAGG ROAD AND THE MARK IS ON THE SOUTHWEST SIDE. THE MARK IS 18.6 M (61.0 FT) SOUTH WEST OF A LIGHT POLE, 1.64 M (5.4 FT) SOUTHEAST OF THE CURB AT THE PARKING AREA ENTRANCE, AND 2.04 M (6.7 FT) NORTHEAST OF THE CURB.
09/01/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 RECOVERED IN GOOD CONDITION.
10/01/1997 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1997 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in August 1998.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.