Details for Benchmark: TR0616
N 48° 29.933 W 122° 40.583 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In SKAGIT county, WA View Original Datasheet
- T 329
- Marker Type:
- bench mark disk
- set into the top of a round concrete monument
- May hold, but of type commonly subject to surface motion.
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Documented History (by the NGS)
|01/01/1952 by CGS (MONUMENTED)
|DESCRIBED BY COAST AND GEODETIC SURVEY 1952
3.6 MI W FROM ANACORTES. 0.4 MILE SOUTH ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT ANACORTES, THENCE 3.2 MILES WEST ALONG AN ASPHALT ROAD, AT THE T JUNCTION OF ALEXANDER BEACH ROAD, 125 FEET SOUTH OF AND ACROSS THE JUNCTION FROM THE SOUTH CORNER OF A FRAME HOUSE, 47 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, 28 FEET SOUTHWEST OF THE CENTER LINE OF ALEXANDER BEACH ROAD, 2.8 FEET SOUTH OF A 6-FOOT HIGH WHITE ROAD SIGN POST, 1.8 FEET SOUTHEAST OF A WITNESS POST, ABOUT 1 FOOT HIGHER THAN THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3 FOOT ABOVE THE GROUND.
|01/01/1976 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
REACHED FROM THE INTERSECTION OF COMMERCIAL AVENUE AND 12TH STREET IN ANACORTES BY GOING WEST ON 12TH STREET 1.1 MILES TO A AVENUE, CONTINUE STRAIGHT AHEAD 2.0 MILES TO A FORK, KEEP LEFT, GO 0.15 MILE TO THE INTERSECTION OF ANACO BEACH ROAD AND SUNSET AVENUE AND THE MARK, 47 FEET SOUTH OF THE CENTER OF SUNSET AVENUE, 35 FEET WEST OF THE CENTER OF ANACO BEACH ROAD, 11 FEET EAST OF THE LOWER END OF A POWER POLE GUY WIRE AND 2 FEET NORTH OF A SPLIT TRUNK, 6 INCH FIR TREE WITH A SURVEY MARKER SIGN. (TRUNK OF TREE DIVIDES ABOUT 18 INCHES ABOVE GROUND). THE MARK IS A STANDARD DISK SET IN A ROUND CONCRETE POST WHICH PROJECTS 1 INCH ABOVE GROUND.
|01/01/1984 by USPSQD (GOOD)
|RECOVERY NOTE BY US POWER SQUADRON 1984
RECOVERED IN GOOD CONDITION.
- 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.