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Details for Benchmark: EE1630

N 34° 28.011 W 084° 10.771 (NAD 83)

Altitude: 1620

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

Location:
In DAWSON county, GA View Original Datasheet
Designation:
JUNO
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:

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Station, RM2, AZ Recovered in good condition. RM1 not recovered. New water standpipe blocks view from AZ to Station.

[Photos:]
photoThe Station Disk
photoRM2 Disk
photoAzimuth Disk

Documented History (by the NGS)

01/01/1975 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (LHW) RM 1 AND RM 2 MEASUREMENTS ARE CONVERTED FROM SLOPE TO HORIZONTAL. THE STATION IS LOCATED ABOUT 12 MILES WEST-SOUTHWEST OF DAHLONEGA, 4.7 MILES NORTHWEST OF DAWSONVILLE, 2.6 MILES NORTH OF STATE ROUTE 53, 1.4 MILES SOUTHWEST OF STATE ROUTE 136 AND IS ON PROPERTY OWNED BY THE GEORGIA STATE FORESTRY COMMISSION. TO REACH THE STATION FROM THE COURTHOUSE IN THE CENTER OF DAWSONVILLE, GO WEST ON STATE ROUTE 53 FOR 2.5 MILES TO THE JUNCTION OF STATE ROUTE 183 ON THE RIGHT, TURN RIGHT AND GO NORTH ON STATE ROUTE 183 FOR 2.95 MILES TO THE JUNCTION OF STATE ROUTE 342 ON THE RIGHT, BEAR LEFT AND GO NORTHWEST ON STATE ROUTE 183 FOR 0.15 MILE TO THE JUNO DAWSON FIRE TOWER ON THE RIGHT AND THE STATION SITE. TO REACH THE AZIMUTH MARK, CONTINUE WEST ON STATE ROUTE 183 FOR 0.3 MILE TO THE MARK ON THE LEFT. THE STATION MARKS ARE STANDARD DISKS STAMPED JUNO 1975. THE SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS 1-INCH ABOVE THE GROUND SURFACE. IT IS 44 FEET NORTH-NORTHWEST OF A FENCE CORNER, 38 FEET NORTHEAST OF THE DRIVEWAY CENTER, 25 FEET SOUTH-SOUTHEAST OF A TWIN TRUNKED OAK TREE AND 24.6 FEET SOUTH-SOUTHWEST OF A 14-INCH PINE TREE. THE UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF CONCRETE WHICH IS ABOUT 42 INCHES BELOW THE GROUND SURFACE. REFERENCE MARK 1, A STANDARD DISK STAMPED JUNO NO 1 1975, IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS 4 INCHES ABOVE THE GROUND SURFACE. IT IS 34 FEET SOUTHWEST OF A FENCE CORNER, 20 FEET SOUTHWEST OF THE DRIVEWAY CENTER, 1.9 FEET NORTHWEST OF A METAL WITNESS POST AND IS ABOUT 6 FEET LOWER THAN THE STATION MARK AND IS ABOUT 10 FEET HIGHER THAN STATE ROUTE 183. REFERENCE MARK 2, A STANDARD DISK STAMPED JUNO NO 2 1975, IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS 3 INCHES ABOVE THE GROUND SURFACE. IT IS 34 FEET NORTHEAST OF A FENCE CORNER, 1.4 FEET SOUTH OF A METAL WITNESS POST, 0.6 FEET SOUTHEAST OF A FENCE AND IS ABOUT 5 FEET LOWER THAN THE STATION MARK. AZIMUTH MARK, A STANDARD REFERENCE MARK DISK STAMPED JUNO AZ 1975, IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS 6 INCHES ABOVE THE GROUND SURFACE. IT IS 32 FEET SOUTH-SOUTHWEST OF THE ROAD CENTER, 15.5 FEET NORTH-NORTHWEST OF AN 8-INCH OAK TREE AND 2.2 FEET NORTH-NORTHEAST OF A METAL WITNESS POST. HEIGHT OF LIGHT ABOVE STATION MARK 26.4 METERS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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