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Details for Benchmark: NB0884

N 42° 49.367 W 077° 23.833 (NAD 83)

Altitude: 912.7

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

Location:
In ONTARIO county, NY View Original Datasheet
Designation:
F 160
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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As stated in previous find, culvert is in rough shape, but benchmark is solid. Has some paint on it, but readable. Captain Jon Iroquois Sail and Power Squadron

Culvert is in rough shape, but mark is still solid.

[Photos:]
photoNB0884_F160_close.jpg

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 0.9 MI N FROM BRISTOL CENTER. TO REACH FROM THE METHODIST CHURCH AT BRISTOL CENTER. PROCEED NORTHERLY ALONG N.Y. STATE HIGHWAY NO. 64 0.9 MILE TO THE SITE OF THE BENCH MARK. BENCH MARK IS IN EAST HEADWALL OF CONCRETE ROAD CULVERT AND ABOUT 0.3 MILE NORTH OF CONGREGATIONAL CHURCH. IT IS ABOUT 1.4 FEET BELOW THE CENTER LINE OF PAVEMENT AND ABOUT 0.6 MILE SOUTH OF JUNCTION OF N.Y. STATE HIGHWAY NO. 64 AND U.S. HIGHWAY NO. 20 A.
01/01/1982 by LOCSUR (POOR)
RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982 NO DISK IN HEADWALL BADLEY DISENTIGUALED, ONLY MARK SHOWING . IT WAN''T BE THERE TOO LONG.
01/01/1986 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1986 (RHS) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (RHS) 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.

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