National Geodetic Survey, Retrieval Date = OCTOBER 28, 1999 HR2743 *********************************************************************** HR2743 DESIGNATION - MOUNT CONNESS HR2743 PID - HR2743 HR2743 STATE/COUNTY- CA/TUOLUMNE HR2743 USGS QUAD - TIOGA PASS (1990) HR2743 HR2743 *CURRENT SURVEY CONTROL HR2743 ___________________________________________________________________ HR2743* NAD 83(1992)- 37 58 01.34561(N) 119 19 16.63324(W) ADJUSTED HR2743* NAVD 88 - 3855.5 (meters) 12649. (feet) VERTCON HR2743 ___________________________________________________________________ HR2743 EPOCH DATE - 1991.35 HR2743 LAPLACE CORR- 2.60 (seconds) DEFLEC99 HR2743 GEOID HEIGHT- -23.67 (meters) GEOID99 HR2743 HR2743 HORZ ORDER - FIRST HR2743 HR2743.The horizontal coordinates were established by classical geodetic methods HR2743.and adjusted by the National Geodetic Survey in March 1994. HR2743.The horizontal coordinates are valid at the epoch date displayed above. HR2743.The epoch date for horizontal control is a decimal equivalence HR2743.of Year/Month/Day. HR2743 HR2743.The NAVD 88 height was computed by applying the VERTCON shift value to HR2743.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) HR2743 HR2743.The Laplace correction was computed from DEFLEC99 derived deflections. HR2743 HR2743.The geoid height was determined by GEOID99. HR2743 HR2743; North East Units Scale Converg. HR2743;SPC CA 3 - 2,176,724.09 6,901,450.24 sFT 0.99993626 +0 43 17.9 HR2743;SPC CA 3 - 663,466.831 2,103,566.241 MT 0.99993626 +0 43 17.9 HR2743;UTM 11 - 4,204,700.044 296,092.330 MT 1.00011212 -1 25 42.8 HR2743 HR2743: Primary Azimuth Mark Grid Az HR2743:SPC CA 3 - MOUNT HOFFMAN 230 38 15.6 HR2743:UTM 11 - MOUNT HOFFMAN 232 47 16.3 HR2743 HR2743|---------------------------------------------------------------------| HR2743| PID Reference Object Distance Geod. Az | HR2743| dddmmss.s | HR2743| MOUNT CONNESS RM 3 AZIMUTH 1215909.5 | HR2743| MOUNT CONNESS RM 1 14.270 METERS 16753 | HR2743| HR2744 CATHEDRAL PEAK APPROX.15.2 KM 2091601.4 | HR2743| HR2847 MOUNT HOFFMAN APPROX.21.3 KM 2312133.5 | HR2743| MOUNT CONNESS RM 2 23.396 METERS 24341 | HR2743|---------------------------------------------------------------------| HR2743 HR2743 SUPERSEDED SURVEY CONTROL HR2743 HR2743 NAD 83(1986)- 37 58 01.32098(N) 119 19 16.63729(W) AD(1984.00) 1 HR2743 NAD 27 - 37 58 01.59700(N) 119 19 13.07200(W) AD( ) 1 HR2743 NGVD 29 - 3853.8 (m) 12644. (f) VERT ANG HR2743 HR2743.Superseded values are not recommended for survey control. HR2743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HR2743.See file dsdata.txt to determine how the superseded data were derived. HR2743 HR2743_MARKER: B = BOLT HR2743_SETTING: 80 = SET IN A BOULDER HR2743 HR2743 HISTORY - Date Condition Recov. By HR2743 HISTORY - 1890 MONUMENTED CGS HR2743 HISTORY - 1905 GOOD USGS HR2743 HISTORY - 1934 GOOD CGS HR2743 HISTORY - 1952 GOOD USGS HR2743 HISTORY - 1953 GOOD USGS HR2743 HISTORY - 1956 GOOD CGS HR2743 HISTORY - 1956 GOOD USGS HR2743 HR2743 STATION DESCRIPTION HR2743 HR2743'DESCRIBED BY US GEOLOGICAL SURVEY 1905 HR2743'RECOVERED AS DESCRIBED BY NGS. HR2743 HR2743 STATION RECOVERY (1934) HR2743 HR2743'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 HR2743'ABOUT 4 MILES NW OF E GATE TO YOSEMITE PARK, 4 MILES SW OF HR2743'SADDLEBAG LAKE, AND ON HIGHEST POINT OF MOUNT CONNESS. TO REACH HR2743'FROM LEEVINING, GO S 0.3 MILE ON HIGHWAY, TURN RIGHT ON TO HR2743'TIOGA PASS ROAD AND GO 12 MILES, TURN RIGHT ONTO ROAD TO HR2743'SADDLEBAG LAKE, AND GO 1.5 MILES TURN RIGHT AND GO ABOUT 0.6 MILE HR2743'TO END OF ROAD, FOLLOW UP CREEK ABOUT 1/4 MILE, GO TO RIGHT UP HR2743'SIDE OF MOUNTAIN TO N POINT OF HIGH RIDGE AND THENCE ALONG RIDGE HR2743'TO HIGHEST POINT AND STATION SITE. IN 1879 STATION WAS HR2743'MARKED BY CROSS ON COPPER BOLT SET IN DRILL HOLE IN SOLID HR2743'ROCK. IN 1890 THE GEODETIC POSITION OF THE STATION WAS HR2743'DETERMINED. CONCRETE PIER 26 INCHES IN DIAMETER AND 40 HR2743'INCHES ABOVE ROCK, WAS BUILT. AND 5/8-INCH COPPER BOLT WITH HR2743'BROAD, FLAT, SPHERICAL HEAD WAS PLACED IN TOP. A DILVER PIN HR2743'WAS DRIVEN INTO HEAD OF BOLT BUT CROSS ON TOP A SHORT HR2743'DISTANCE AWAY MARKS STATION. MOUNT CONNESS LATITUDE STATION, HR2743'MARKED BY CONCRETE PIER, WAS 194.5 METERS (638 FEET) FROM HR2743'STATION IN AZIMUTH 301 DEG 59 MIN. MAGNETIC PIER WAS 180.4 HR2743'METERS (592 FEET) FROM STATION IN AZIMUTH 298 DEG 20 MIN. HR2743'VERTICAL-CIRCLE PIER WAS 8.72 METERS (28.6 FEET) W AND 24.81 HR2743'METERS (81.4 FEET) S OF MAGNETIC PIER. AND TRANSIT PIER WAS HR2743'1.545 METERS (5.07 FEET) W OF LATITUDE PIER. IN 1934 TWO HR2743'STANDARD REFERENCE DISKS IN BEDROCK, WERE ESTABLISHED--NO. HR2743'1 IS 14.304 METERS (46.93 FEET) FROM STATION. HR2743'NO. 2 IS 22.126 METERS (72.59 FEET) FROM STATION. HR2743'REFERENCE MARK NO. 3 (PROBABLY STANDARD HR2743'REFERENCE DISK) WAS ALSO ESTABLISHED, AT BASE OF SHARP PEAK, IN HR2743'CONCRETE PIER ABOUT 3 FEET HIGH, AND ABOUT 1/4 MILE FROM STATION. HR2743 HR2743 STATION RECOVERY (1952) HR2743 HR2743'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1952 HR2743'RECOVERED AS DESCRIBED BY USGS AND NGS. HR2743 HR2743 STATION RECOVERY (1953) HR2743 HR2743'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953 HR2743'RECOVERED AS DESCRIBED BY USGS AND NGS. HR2743 HR2743 STATION RECOVERY (1956) HR2743 HR2743'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (RLE) HR2743'THE STATION MARK AS ORIGINALLY ESTABLISHED IN 1879 AND THE HR2743'REFERENCE MARKS ESTABLISHED IN 1934 WERE RECOVERED AND FOUND IN HR2743'GOOD CONDITION. THE CONCRETE PIER WITH THE COPPER BOLT AND A HR2743'SILVER PIN MARKING THE CENTER POINT WHICH WAS ESTABLISHED OVER HR2743'THE ORIGINAL MARK IN 1890 HAS SINCE BEEN PARTLY DESTROYED AND HR2743'NO EVIDENCE OF THE BOLT OR SILVER PIN COULD BE FOUND. HOWEVER, HR2743'THE ORIGINAL COPPER BOLT MARKED BY A CROSS AND SET IN BEDROCK HR2743'WAS FOUND IN EXCELLENT CONDITION AND WELL PROTECTED BY THE HR2743'REMAINS OF THE 1890 PIER. HR2743' HR2743'A DISCREPANCY WAS FOUND IN THE HORIZONTAL MEASUREMENTS OF HR2743'REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 ESTABLISHED IN 1934. HR2743' HR2743'FOLLOWING IS A NEW AND COMPLETE DESCRIPTION-- HR2743' HR2743'THE STATION MARK IS ON THE HIGHEST POINT OF MOUNT CONNESS, ABOUT HR2743'4-1/2 MILES NNW OF THE EAST GATE OF YOSEMITE NAIONAL PARK, 4 HR2743'MILES W OF THE NORTH END OF SADDLEBAG LAKE, 4 MILES NE OF YOUNG HR2743'LAKE AND JUST W OF THE TUOLUMNE-MONO COUNTY LINE AND THE BOUNDARY HR2743'LINE BETWEEN YOSEMITE NATIONAL PARK AN INYO NATIONAL FOREST. HR2743'THE STATION IS MARKED BY A CROSS ON A COPPER BOLT SET IN A DRILL HR2743'HOLE IN BEDROCK AND IS ABOUT SURROUNDING BY THE REMAINS OF A HR2743'CONCRETE PIER PROJECTING ABOUT 16 INCHES ABOVE THE MARK. THE HR2743'COPPER BOLT PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE OF THE HR2743'ROCK AND BEARS NO STAMPING. HR2743' HR2743'REFERENCE MARK NO. 1 IS LOCATED ON THE SOUTH SLOPE OF THE MOUNTAIN HR2743'ABOUT 9 FEET BELOW THE ELEVATION OF THE STATION. IT IS A HR2743'STANDARD BRONZE DISK CEMENTED IN A DRILL HOLE IN OUTCROPPING HR2743'BEDROCK AND THE DISK IS STAMPED CONNESS NO 1 1934. HR2743' HR2743'REFERENCE MARK NO. 2 IS LOCATED ON THE WEST SLOPE OF THE MOUNTAIN HR2743'ABOUT 40 FEET BELOW THE ELEVATION OF THE STATION. IT IS STANDARD HR2743'BRONZE DISK CEMENTED IN A DRILL HOLE IN A LARGE GRANITE BOULDER HR2743'AND THE DISK IS STAMPED CONNESS NO 2 1934. HR2743' HR2743'REFERENCE MARK NO. 3 (AZIMUTH MARK) IS LOCATED ON A SHELF AT HR2743'THE BASE OF THE LAST RISE OF THE MOUNTAIN AND ABOUT 650 FEET HR2743'BELOW THE ELEVATION OF THE STATION. IT IS A STANDARD BRONZE HR2743'DISK CEMENTED IN A DRILL HOLE IN THE TOP OF A CONCRETE PIER HR2743'APPROXIMATELY 18 INCHES SQUARE AND PROJECTING 56 INCHES ABOVE HR2743'THE GROUND. THIS IS THE MOST EASTERLY OF TWO PIERS WITHIN A HR2743'ROCK ENCLOSURE. THE DISK IS STAMPED CONNESS NO 3 1934. HR2743' HR2743'A DIRECTION WAS TAKEN TO TWO CONCRETE PIERS AT ABOUT THE SAME HR2743'ELEVATION AS REFERENCE MARK NO. 3, BUT NO MEASUREMENTS COULD BE HR2743'MADE BECAUSE OF THE DISTANCE AND VERTICAL ANGLE INVOLVED. ONE HR2743'OF THESE PIERS IS WITHIN THE SAME ROCK ENCLOSURE AND ABOUT 5 HR2743'FEET W OF REFERENCE MARK NO. 3. THE POINT OBSERVED UPON WAS A HR2743'SMALL CROSS NEAR THE CENTER OF THE PIER WHICH IS 16 INCHES BY HR2743'24 INCHES AT THE TOP AND PROJECTS ABOUT 54 INCHES ABOVE THE HR2743'GROUND. THE OTHER PIER IS 60.23 FEET SW OF REFERENCE MARK NO. HR2743'3. THE POINT OBSERVED UPON WAS A SMALL CROSS NEAR THE CENTER OF HR2743'THE PIER WHICH IS APPROXIMATELY 22 INCHES SQUARE AT THE TOP AND HR2743'PROJECTS 51 INCHES ABOVE THE SURFACE OF THE GROUND. HR2743' HR2743'A HELICOPTER LANDING WAS MADE ON THE SHELF AT THE BASE OF THE HR2743'LAST RISE OF THE MOUNTAIN FROM A SMALL MEADOW AT THE NORTH END HR2743'OF SADDLEBAG LAKE. A 30-MINUTE PACK TO THE TOP AND THE STATION HR2743'FROM THIS POINT. HR2743 HR2743 STATION RECOVERY (1956) HR2743 HR2743'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956 HR2743'RECOVERED AS DESCRIBED BY USGS AND NGS.