DATASHEETS Data Sheet Retrieval National Geodetic Survey, Retrieval Date = MAY 18, 2019 DU1935 *********************************************************************** DU1935 DESIGNATION - ROUNDTOP DU1935 PID - DU1935 DU1935 STATE/COUNTY- AZ/GILA DU1935 COUNTRY - US DU1935 USGS QUAD - ROUND TOP MTN (1978) DU1935 DU1935 *CURRENT SURVEY CONTROL DU1935 ______________________________________________________________________ DU1935* NAD 83(1992) POSITION- 33 56 01.01969(N) 110 00 36.72575(W) ADJUSTED DU1935* NAVD 88 ORTHO HEIGHT - 2193.5 (meters) 7197. (feet) VERTCON DU1935 ______________________________________________________________________ DU1935 GEOID HEIGHT - -24.038 (meters) GEOID12B DU1935 LAPLACE CORR - 4.92 (seconds) DEFLEC12B DU1935 HORZ ORDER - SECOND DU1935 DU1935.The horizontal coordinates were established by classical geodetic methods DU1935.and adjusted by the National Geodetic Survey in August 1993. DU1935. DU1935.The NAVD 88 height was computed by applying the VERTCON shift value to DU1935.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DU1935 DU1935.Significant digits in the geoid height do not necessarily reflect accuracy. DU1935.GEOID12B height accuracy estimate available here. DU1935 DU1935.The Laplace correction was computed from DEFLEC12B derived deflections. DU1935 DU1935. The following values were computed from the NAD 83(1992) position. DU1935 DU1935; North East Units Scale Factor Converg. DU1935;SPC AZ E - 325,302.244 227,824.787 MT 0.99990258 +0 05 14.4 DU1935;SPC AZ E - 1,067,264.58 747,456.65 iFT 0.99990258 +0 05 14.4 DU1935;UTM 12 - 3,755,236.672 591,478.507 MT 0.99970316 +0 33 09.3 DU1935 DU1935! - Elev Factor x Scale Factor = Combined Factor DU1935!SPC AZ E - 0.99965954 x 0.99990258 = 0.99956215 DU1935!UTM 12 - 0.99965954 x 0.99970316 = 0.99936280 DU1935 DU1935: Primary Azimuth Mark Grid Az DU1935:SPC AZ E - ROUNDTOP AZ MK 032 06 15.3 DU1935:UTM 12 - ROUNDTOP AZ MK 031 38 20.4 DU1935 DU1935_U.S. NATIONAL GRID SPATIAL ADDRESS: 12SWC9147855236(NAD 83) DU1935 DU1935|---------------------------------------------------------------------| DU1935| PID Reference Object Distance Geod. Az | DU1935| dddmmss.s | DU1935| CD2631 ROUNDTOP AZ MK 0321129.7 | DU1935| CD2632 ROUNDTOP RM 1 15.550 METERS 06047 | DU1935| DU1934 ROUND TOP LOOKOUT TOWER 3.889 METERS 21611 | DU1935| CD2633 ROUNDTOP RM 2 4.831 METERS 24504 | DU1935|---------------------------------------------------------------------| DU1935 DU1935 SUPERSEDED SURVEY CONTROL DU1935 DU1935 NAD 83(1986)- 33 56 01.01658(N) 110 00 36.73017(W) AD( ) 2 DU1935 NAD 27 - 33 56 00.84330(N) 110 00 34.35820(W) AD( ) 2 DU1935 NGVD 29 (07/19/86) 2192.7 (m) 7194. (f) VERT ANG DU1935 DU1935.Superseded values are not recommended for survey control. DU1935 DU1935.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DU1935.See file dsdata.pdf to determine how the superseded data were derived. DU1935 DU1935_MARKER: DS = TRIANGULATION STATION DISK DU1935_SETTING: 80 = SET IN A BOULDER DU1935_STAMPING: ROUNDTOP 1958 DU1935_MARK LOGO: CGS DU1935_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO DU1935+STABILITY: SURFACE MOTION DU1935 DU1935 HISTORY - Date Condition Report By DU1935 HISTORY - 1958 MONUMENTED CGS DU1935 HISTORY - 1960 GOOD USGS DU1935 HISTORY - 1967 GOOD AMS DU1935 DU1935 STATION DESCRIPTION DU1935 DU1935'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (CAA) DU1935'THE STATION IS LOCATED ON THE SUMMIT OF ROUND TOP MOUNTAIN, ABOUT DU1935'13 MILES SOUTH WEST OF MC NARY, ABOUT 7.5 MILES NORTH-NORTHWEST DU1935'OF WHITERIVER, ABOUT 0.6 MILE WEST OF THE NAVAJO-GILA COUNTY LINE DU1935'AND 13 FEET NORTH-NORTHEAST OF THE CENTER OF THE LOOKOUT TOWER. DU1935'THE MARK PROJECTS 6 INCHES ABOVE THE SURROUNDING SURFACE AND IS DU1935'STAMPED ROUNDTOP 1958. DU1935' DU1935'REFERENCE MARK NO. 1 IS ABOUT 6 FEET LOWER THAN THE STATION. DU1935'THE MARK PROJECTS 2 FEET ABOVE THE SURROUNDING SURFACE AND IS DU1935'STAMPED ROUNDTOP NO 1 1958. DU1935' DU1935'REFERENCE MARK NO. 2 IS CEMENTED IN A DRILL HOLE IN THE CONCRETE DU1935'FOOTING OF THE NORTHWEST LEG OF THE LOOKOUT TOWER. THE MARK DU1935'PROJECTS 12 INCHES ABOVE THE SURFACE OF THE GROUND AND IS STAMPED DU1935'ROUNDTOP NO 2 1958. DU1935' DU1935'AZIMUTH MARK IS 15 FEET EAST OF THE CENTER OF THE BLADED ROAD, DU1935'2 FEET NORTH OF A 36-INCH TREE AND 2 FEET EAST OF A WITNESS POST. DU1935'THE MARK PROJECTS 2 INCHES ABOVE THE SURROUNDING SURFACE AND IS DU1935'STAMPED ROUNDTOP 1958. DU1935' DU1935'ROUND TOP LOOKOUT TOWER IS A 4-LEGGED STEEL STRUCTURE WITH THE DU1935'WINDOWS BROKEN OUT IN THE TOP, COLORED GRAY AND IS 30 FEET IN DU1935'OVERALL HEIGHT. THE CENTER OF THE TOWER AT GROUND LEVEL WAS THE DU1935'POINT INTERSECTED. THE LOOKOUT TOWER HAS BEEN ABANDONED. DU1935' DU1935'TO REACH THE STATION FROM THE POST OFFICE IN PINETOP, GO SOUTH ON DU1935'STATE HIGHWAY NO. 173 FOR 4.1 MILES TO THE JUNCTION OF STATE HIGHWAY DU1935'NO. 73 AT INDIAN PINE, TURN RIGHT AND CONTINUE SOUTHERLY ON STATE DU1935'HIGHWAY NO. 73 FOR 10.2 MILES TO A SIDE ROAD ON THE RIGHT JUST DU1935'AFTER CROSSING A SMALL WOODEN BRIDGE AND JUST BEFORE REACHING A DU1935'INDIAN RESIDENCE, TURN RIGHT ON THE BLADED ROAD AND GO WESTERLY DU1935'FOR 6.3 MILES TO THE AZIMUTH MARK ON THE LEFT AS DESCRIBED, DU1935'CONTINUE WESTERLY ON THE BLADED ROAD FOR 1.3 MILES TO THE END DU1935'OF THE ROAD AT A CABIN, FROM HERE PACK UP WELL DEFINED TRAIL DU1935'FOR ABOUT 30 MINUTES TO THE LOOKOUT TOWER AND THE STATION AS DU1935'DESCRIBED. DU1935 DU1935 STATION RECOVERY (1960) DU1935 DU1935'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1960 DU1935'RECOVERED IN GOOD CONDITION. DU1935' DU1935'REACHED BY HELICOPTER. DU1935 DU1935 STATION RECOVERY (1967) DU1935 DU1935'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1967 DU1935'STATION ROUNDTOP IS LOCATED APPROXIMATELY 7.0 AIRMILES (NW) OF DU1935'WHITERIVER, ARIZONA AND 24.0 AIRMILES (NE) OF SALT RIVER BRIDGE DU1935'ON U.S. HWY 60. DU1935' DU1935'TO REACH FROM WHITERIVER P.O. (WHITERIVER, ARIZONA) GO (N) ON STATE DU1935'HWY 73 FOR 8.1 MI TO SIDE ROAD ON LEFT JUST BEFORE CROSSING A DU1935'CONCRETE BRIDGE, TURN LEFT (N) AND AFTER CROSSING CATTLE GUARD DU1935'CONTINUE ON DIRT ROAD FOR 6.3 MI TO AZIMUTH MARK ON LEFT SIDE OF DU1935'ROAD, CONTINUE 1.3 MI TO END OF ROAD AND TRAIL ON RIGHT (N). DU1935'PACK UP WELL DEFINED TRAIL FOR ABOUT 25 MINUTES TO STATION. THE DU1935'STATION IS LOCATED AT THE SUMMIT OF A MOUNTAIN KNOWN DU1935'LOCALLY AS ROUNDTOP MOUNTAIN. DU1935' DU1935'THE STATION IS A STANDARD USC AND GS BRONZE DISK CEMENTED IN ROCK DU1935'AND STAMPED ROUNDTOP 1958. IT IS LOCATED NEAR THE FOUNDATION OF DU1935'AN ABANDONED LOOKOUT TOWER AND PROJECTS 6 INCHES ABOVE THE SURFACE DU1935'OF THE GROUND. DU1935' DU1935'THE AZIMUTH MARK IS A STANDARD BRONZE DISK CEMENTED IN ROCK DU1935'PROJECTING 2 IN AND STAMPED ROUNDTOP 1958. IT IS LOCATED 5.8 M (E) DU1935'OF CENTERLINE ROAD. DU1935' DU1935'R.M. 1 IS A STANDARD USC AND GS BRONZE R.M. DISK CEMENTED IN ROCK DU1935'PROJECTING 2.0 FT AND STAMPED ROUNDTOP NO 1 1958. FROM THE STATION DU1935'IT IS (NE) ON A MAG AZ OF 60 DEG AT A DISTANCE OF 15.66 M AND A DU1935'DE OF -3.3 M. DU1935' DU1935'R.M. 2 IS A STANDARD USC AND GS BRONZE R.M. DISK CEMENTED IN CONCRETE DU1935'FOOTER OF OLD FIRE TOWER WHICH PROJECTS 1 FT AND STAMPED ROUNDTOP DU1935'NO 2 1958. FROM THE STATION IT IS (SW) ON A MAG AZ OF 244 DEG AT DU1935'A DISTANCE OF 4.85 M AND A DE OF +0.13 M DU1935' DU1935'CONDITION OF ALL MARKS IS EXCELLENT. DU1935' DU1935'LINE OF SIGHT IS OBSTRUCTED IN ALL DIRECTIONS FROM TRIPOD AT DU1935'HEIGHT OF 1.25M.