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Details for Benchmark: LY2295

N 41° 26.083 W 074° 47.933 (NAD 83)

Altitude: 517.27

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

Location:
In SULLIVAN county, NY View Original Datasheet
Designation:
K 449
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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N 41° 26.085 W 074° 47.952

Found by description. Cover under about an inch of dirt. Pole 107 renumbered 178 4/8. Railroad rail is missing. Witness post is missing. I never found the culvert, but I heard water gurgling through it. Ties to pole, highway curve sign and highway marker 97-9602-1030 good. The concrete setting has been pushed against the rod. Condition fair or poor, depending whether rod has been affected.
Hand-held GPS coordinates: N 41 26 05.1 W 074 47 57.1.

[Photos:]
photoLY2295 Lumberland Sullivan NY Close Up of Numbers
photoLY2295 Lumberland Sullivan NY View Downward
Toward Cover
photoLY2295 Lumberland Sullican NY View Downward
Toward setting and rod
photoLY2295 Lumberland Sullivan NY View Northeast
Toward highway curve sign and highway marker
photoLY2295 Lumberland Sullivan NY View North
Toward Delaware River

Documented History (by the NGS)

01/01/1982 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1982 2.6 KM (1.6 MI) ENE FROM POND EDDY. 2.6 KM (1.6 MI) EAST-NORTHEAST ALONG STATE HIGHWAY 97 FROM THE NORTHWEST END OF THE STATE LINE BRIDGE OVER THE DELAWARE RIVER IN POND EDDY, TO THE MARK ON THE LEFT, ON THE EAST SIDE OF A VERTICALLY SET RAILROAD RAIL ALONG STATE HIGHWAY 97 AND USED FOR PROTECTION OF A SMALL CULVERT, 5.33 METERS (17.5 FT) EAST OF THE CENTER LINE OF THE HIGHWAY, 11.50 METERS (37.7 FT) SOUTH OF A HIGHWAY CURVE SIGN WITH HIGHWAY MARKER NUMBER 97-9602-1030 ATTACHED, 2.13 METERS (7.0 FT) SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF THE HEADWALL OF A CONCRETE CULVERT, 3.85 METERS (12.6 FT) NORTH-NORTHWEST OF TELEPHONE POLE NUMBER 107, 0.30 METER (1.0 FOOT) EAST OF THE RAILROAD RAIL PROJECTING 3.5 FT ABOVE THE GROUND. THE MARK IS 0.35 METERS E FROM A WITNESS POST. THE MARK IS 0.30 M BELOW HIGHWAY.

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.

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