Details for Benchmark: PE0278
N 44° 22.767 W 068° 14.083 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In HANCOCK county, ME View Original Datasheet
- V 144
- Marker Type:
- bench mark disk
- in rock outcrop
- Most reliable and expected to hold position/elevation well.
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Documented History (by the NGS)
|1/1/1962 by CGS (MONUMENTED)
|DESCRIBED BY COAST AND GEODETIC SURVEY 1962
1.8 MI W FROM BAR HARBOR. 0.35 MILE WEST ON COTTAGE STREET FROM THE POST OFFICE IN BAR HARBOR, THENCE 1.45 MILE SOUTH AND WEST ON STATE HIGHWAY 233, OR 0.25 MILE SOUTHWEST OF THE OVERPASS OF THE ROAD LEADING TO CADILLAC MOUNTAIN. 141 FEET NORTH OF THE JUNCTION OF AN OLD ROAD THAT ONCE CROSSED THE ROAD LEADING TO CADILLAC MOUNTAIN, (THE NEW ROAD GOES UNDER IT), 81 FEET NORTHWEST OF THE CENTER LINE OF HIGHWAY 233. SET IN A DRILL HOLE ABOUT 10 INCHES FROM THE SOUTH EDGE OF A ROCK OUTCROP AND 1 FOOT ABOVE THE GROUND.
|1/1/1977 by USGS (GOOD)
|RECOVERY NOTE BY US GEOLOGICAL SURVEY 1977
AT DRAIN X-ING. 72 FT W C/L RD AT DRAIN. 39.4 FT NW OF WEST END OF 30 INCH STEEL CULVERT. 9 FT SW C/L 30 INCH PINE. SET IN TOP OF ROCK OUTCROP 10 INCHES N. OF S. EDGE. STD. TABLET STAMPED V 144 1962.
|10/19/2000 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (GAS)
0.6 KM (0.35 MI) WESTERLY ALONG COTTAGE STREET FROM THE POST OFFICE IN BAR HARBOR, THENCE 0.2 KM (0.10 MI) SOUTHERLY ALONG STATE HIGHWAY 3, THENCE 2.3 KM (1.40 MI) WESTERLY ALONG STATE HIGHWAY 233, NEAR THE SOUTH EDGE OF THE LOWER LEDGE OF A 4 BY 25-FOOT EXPOSED ROCK OUTCROP, 21.2 M (69.6 FT) NORTHWEST OF THE HIGHWAY CENTERLINE, 12.8 M (42.0 FT) NORTHWEST OF THE CENTER OF THE WEST END OF A CULVERT UNDER THE HIGHWAY, 1.7 M (5.6 FT) SOUTHWEST OF THE NORTHEAST END OF THE ROCK, AND 0.5 M (1.6 FT) ABOVE THE LEVEL OF THE HIGHWAY. NOTE--THE MARK IS ON THE HIGHWAY RIGHT-OF-WAY.
- 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.