Details for Benchmark: DV2248
N 33° 31.360 W 112° 26.180 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In MARICOPA county, AZ View Original Datasheet
- Marker Type:
- survey 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)
|01/01/1986 by AZDT (MONUMENTED)
|DESCRIBED BY ARIZONA DEPARTMENT OF TRANSPORTATION 1986 (HW)
THE STATION IS LOCATED ABOUT 7.3 KM (4.5 MI) WEST-NORTHWEST OF LITCHFIELD PARK, ARIZONA.
TO REACH THE STATION FROM THE INTERSECTION OF INDIAN SCHOOL AND COTTON LANE, GO NORTH FOR 3.24 KM (2.0 MI) ON COTTON LANE TO BETHANY HOME ROAD, TURN LEFT AND GO WEST FOR 0.97 KM (0.6 MI) ON BETHANY HOME ROAD TO THE STATION ON THE LEFT.
THE STATION IS A STANDARD AGS DISK STAMPED---RANCH 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 25 CM IN DIAMETER PROJECTING 10 CM ABOVE GROUND. LOCATED 0.91 METERS (3.0 FT) EAST FROM A WITNESS POST AND SIGN, 1.07 METERS (3.5 FT) WEST FROM A WITNESS POST AND SIGN, 0.3 METERS (1.0 FT) NORTH FROM THE EDGE OF A CONCRETE DITCH, 5.49 METERS (18.0 FT) SOUTH FROM THE CENTERLINE OF BETHANY HOME ROAD. THE UNDERGROUND MARK IS A STANDARD AGS DISK STAMPED---RANCH 1986---, SET INTO AN IRREGULAR MASS OF CONCRETE 0.81 METERS BELOW THE SURFACE.
- The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in August 1993.
- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
- The X, Y, and Z were computed from the position and the ellipsoidal ht.
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
- The geoid height was determined by GEOID99.