National Geodetic Survey, Retrieval Date = APRIL 27, 2000 DW0938 *********************************************************************** DW0938 DESIGNATION - TRIGO DW0938 PID - DW0938 DW0938 STATE/COUNTY- AZ/YUMA DW0938 USGS QUAD - MOHAVE PEAK (1986) DW0938 DW0938 *CURRENT SURVEY CONTROL DW0938 ___________________________________________________________________ DW0938* NAD 83(1992)- 33 16 36.77384(N) 114 29 29.19546(W) ADJUSTED DW0938* NAVD 88 - 845.4 (meters) 2774. (feet) VERTCON DW0938 ___________________________________________________________________ DW0938 LAPLACE CORR- 1.69 (seconds) DEFLEC99 DW0938 GEOID HEIGHT- -32.84 (meters) GEOID99 DW0938 DW0938 HORZ ORDER - SECOND DW0938 DW0938.The horizontal coordinates were established by classical geodetic methods DW0938.and adjusted by the National Geodetic Survey in August 1993. DW0938 DW0938.The NAVD 88 height was computed by applying the VERTCON shift value to DW0938.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DW0938 DW0938.The Laplace correction was computed from DEFLEC99 derived deflections. DW0938 DW0938.The geoid height was determined by GEOID99. DW0938 DW0938; North East Units Scale Converg. DW0938;SPC AZ W - 252,710.192 144,290.817 MT 0.99999213 -0 24 24.6 DW0938;UTM 11 - 3,684,790.117 733,634.175 MT 1.00027304 +1 22 37.3 DW0938 DW0938: Primary Azimuth Mark Grid Az DW0938:SPC AZ W - TRIGO AZ MK 095 25 14.1 DW0938:UTM 11 - TRIGO AZ MK 093 38 12.2 DW0938 DW0938|---------------------------------------------------------------------| DW0938| PID Reference Object Distance Geod. Az | DW0938| dddmmss.s | DW0938| TRIGO AZ MK 0950049.5 | DW0938| TRIGO RM 2 9.003 METERS 11643 | DW0938| TRIGO RM 1 9.329 METERS 21629 | DW0938|---------------------------------------------------------------------| DW0938 DW0938 SUPERSEDED SURVEY CONTROL DW0938 DW0938 NAD 83(1986)- 33 16 36.77654(N) 114 29 29.20140(W) AD( ) 2 DW0938 NAD 27 - 33 16 36.65500(N) 114 29 26.37700(W) AD( ) 2 DW0938 NGVD 29 - 844.6 (m) 2771. (f) VERT ANG DW0938 DW0938.Superseded values are not recommended for survey control. DW0938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DW0938.See file dsdata.txt to determine how the superseded data were derived. DW0938 DW0938_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO DW0938+STABILITY: SURFACE MOTION DW0938 DW0938 HISTORY - Date Condition Recov. By DW0938 HISTORY - 1949 MONUMENTED USGS DW0938 HISTORY - 1964 GOOD USGS DW0938 HISTORY - 1965 GOOD AMS DW0938 HISTORY - 1972 GOOD AZHD DW0938 DW0938 STATION DESCRIPTION DW0938 DW0938'DESCRIBED BY US GEOLOGICAL SURVEY 1949 (DHK) DW0938'THE STATION IS LOCATED ABOUT 13 MILES AIR LINE SOUTHEAST OF DW0938'CIBOLA, ON THE HIGHEST POINT OF THE TRIGO MOUNTAINS, 5 FEET DW0938'SOUTH OF THE NORTH RIM, A U.S. GEOLOGICAL SURVEY BENCH MARK, DW0938'SET IN BEDROCK, FLUSH, AND IS STAMPED, M 1933 TRIGO. DW0938' DW0938'REFERENCE MARK NO. 1, A U.S. GEOLOGICAL SURVEY REFERENCE DISK, DW0938'IS APPROXIMATELY 6 FEET LOWER THAN THE STATION, ON THE SOUTHWEST DW0938'SLOPE, SET IN BEDROCK, FLUSH, AND IS STAMPED, TRIGO NO 1. DW0938' DW0938'REFERENCE MARK NO. 2, A U.S. GEOLOGICAL SURVEY REFERENCE DISK, DW0938'IS APPROXIMATELY 2 FEET LOWER THAN THE STATION, ON THE SOUTH DW0938'RIM, SET IN BEDROCK, PROJECTS 10 INCHES, AND IS STAMPED, TRIGO NO DW0938'2. DW0938' DW0938'THE AZIMUTH MARK IS LOCATED ALONG THE ROUTE TO STATION, AT DW0938'A POINT WHERE THE ROAD COMES OUT OF A WASH, NEAR AN OLD FORGE DW0938'AND CAMP SITE, ABOUT 30 PACES WEST OF AND ABOUT 25 FEET HIGHER DW0938'THAN THE ROAD, ON THE NORTHWEST SLOPE OF A SMALL ROCK-COVERED DW0938'PEAK, 4 FEET SOUTH OF A 4X4 WITNESS POST, SET FLUSH, AND IS DW0938'STAMPED, TRIGO 1949. DW0938' DW0938'TO REACH FROM THE EAST END OF BRIDGE AT THE CALIFORNIA-ARIZONA DW0938'STATE LINE EAST OF BLYTHE, GO EAST ON U.S. HIGHWAY 60 AND 70 DW0938'FOR 0.7 MILE TO A DIRT ROAD RIGHT AT SIGN, CIBOLA LAKE. TURN DW0938'RIGHT, SOUTH, AND FOLLOW BLADED ROAD FOR 0.8 MILE TO THE DW0938'INTERSECTION OF NEW HIGHWAY WHICH IS NOW UNDER CONSTRUCTION. DW0938'CROSS HIGHWAY AND CONTINUE SOUTH FOR 17.5 MILES TO A REVERSE DW0938'Y AND SIGN BLYTHE-YUMTURN SHARP LEFT, EAST, AND GO 3.6 DW0938'MILES TO A POINT WHERE THE MAIN ROAD TURNS LEFT AND A DIM ROAD DW0938'CONTINUES STRAIGHT AHEAD. CONTINUE STRAIGHT AHEAD ON DIM DW0938'ROAD FOR 1.8 MILE TO A FORK. THIS ROAD ENTERS A WASH 0.2 DW0938'MILE AFTER TURNING OFF MAIN ROAD AND FOLLOWS WASH FOR 1.4 DW0938'MILE, THEN LEAVES WASH ON THE LEFT OR NORTH SIDE. TAKE DW0938'THE LEFT FORK AND GO 4.1 MILES TO A CROSSROAD. CONTINUE DW0938'STRAIGHT AHEAD FOR 2.65 MILES TO A FORK JUST AFTER CROSSING DW0938'A SMALL WASH. TAKE THE RIGHT FORK OVER SMALL RIDGE AND DW0938'GO 0.05 MILE TO A FORK. TAKE THE LEFT FORK FOR 0.3 DW0938'MILE, CROSSING A WASH, TO A FORK. TAKE THE LEFT FORK IN DW0938'FLAT AND GO 4.2 MILES TO THE AZIMUTH MARK ON THE LEFT DW0938'AS DESCRIBED ABOVE. CONTINUE FOR 0.2 MILE, THENCE TURN DW0938'LEFT UP SMALL RIDGE AND CONTINUE INTO THE NEXT WASH, DW0938'APPROXIMATELY 0.2 MILE, TO THE END OF TRUCK TRAVEL. FROM DW0938'THE END OF TRUCK TRAVEL WALK WEST FOR A SHORT DISTANCE DW0938'TO WASH. TURN RIGHT UP WASH. THIS WASH HEADS NORTH AROUND DW0938'HILL, THEN WEST TOWARDS STATION HILL. FOLLOW WASH TO BASE OF DW0938'STATION HILL, THEN CONTINUE WEST TO THE HIGHEST POINT AND DW0938'STATION ON THE SOUTHERNMOST ONE OF THE TWO VISIBLE DW0938'HILLS. A 1-HOUR AND 30-MINUTE PACK. DW0938 DW0938 STATION RECOVERY (1964) DW0938 DW0938'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1964 DW0938'RECOVERED IN GOOD CONDITION. DW0938' DW0938'REACHED BY HELICOPTER. DW0938 DW0938 STATION RECOVERY (1965) DW0938 DW0938'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1965 DW0938'STATION, REFERENCE MARKS AND AZIMUTH MARK WERE RECOVERED IN DW0938'GOOD CONDITION AS DESCRIBED. DW0938 DW0938 STATION RECOVERY (1972) DW0938 DW0938'RECOVERY NOTE BY ARIZONA HIGHWAY DEPARTMENT (NOW AZDT) 1972 (JHW) DW0938'GENERAL LOCATION THE STATION AND THE REFERENCE MARKS DW0938'WERE RECOVERED IN GOOD CONDITION. THE FOLLOWING NOTE IS DW0938'ADDED ON REACHING THE STATION. DW0938' DW0938'TO REACH FROM MP. 82, ON U.S. 95, WHICH LIES 22.8 MILES DW0938'SOUTH ALONG U.S. 95 FROM THE I 10 U.S. 95 OVERPASS IN QUARTZITE, DW0938'GO NORTHWESTERLY ON A GRADED ROAD (SIGN READS, CIBOLA LAKE) DW0938'FOR 3.6 MILES TO A Y JUNCTION. (IT MAY BE NECESSARY TO DW0938'OBTAIN A PASS FROM THE U.S. ARMY YUMA TEST CENTER TO ENTER.) DW0938'TAKE THE LEFT FORK AND CONTINUE FOR 8.3 MILES TO A Y JUNCTION. DW0938'AT THIS POINT THERE SHOULD BE A BM USGS STAMPED 1133. TAKE THE DW0938'LEFT FORK FOR 2.3 MILES. AT THIS POINT THERE SHOULD BE A USGS DW0938'BM STAMPED, 1112. TAKE THE LEFT FORK SOUTH FOR 2.45 MILES DW0938'TO A Y JUNCTION. TAKE THE RIGHT FORK (THIS IS ONLY FOR 4 DW0938'WHEEL DRIVE VEHICLES) AND GO WESTERLY ABOUT 2 MILES TO THE DW0938'END OF TRUCK TRAVEL. PACK WEST ABOUT A MILE TO THE HIGHEST POINT DW0938'IN THE AREA, ABOUT A 24 HOUR PACK.