The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.18
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = APRIL 19, 2024 07:28:12 EDT
AA3449 ***********************************************************************
AA3449 DESIGNATION - H 226
AA3449 PID - AA3449
AA3449 STATE/COUNTY- CA/NEVADA
AA3449 COUNTRY - US
AA3449 USGS QUAD - NORDEN (2018)
AA3449
AA3449 *CURRENT SURVEY CONTROL
AA3449 ______________________________________________________________________
AA3449* NAD 83(2011) POSITION- 39 19 03.34332(N) 120 19 30.52160(W) ADJUSTED
AA3449* NAD 83(2011) ELLIP HT- 2169.111 (meters) (06/27/12) ADJUSTED
AA3449* NAD 83(2011) EPOCH - 2010.00
AA3449* NAVD 88 ORTHO HEIGHT - 2192.44 (meters) 7193.0 (feet) LEVELING
AA3449 ______________________________________________________________________
AA3449 GEOID HEIGHT - -23.300 (meters) GEOID18
AA3449 NAD 83(2011) X - -2,495,621.709 (meters) COMP
AA3449 NAD 83(2011) Y - -4,266,445.288 (meters) COMP
AA3449 NAD 83(2011) Z - 4,021,031.135 (meters) COMP
AA3449 LAPLACE CORR - -3.98 (seconds) DEFLEC18
AA3449 VERT ORDER - THIRD ?
AA3449
AA3449 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AA3449 Standards:
AA3449 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AA3449 Horiz Ellip SD_N SD_E SD_h (unitless)
AA3449 -------------------------------------------------------------------
AA3449 NETWORK 0.84 2.10 0.38 0.30 1.07 -0.05654639
AA3449 -------------------------------------------------------------------
AA3449 Click here for local accuracies and other accuracy information.
AA3449
AA3449.The horizontal coordinates were established by GPS observations
AA3449.and adjusted by the National Geodetic Survey in June 2012.
AA3449
AA3449.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AA3449.been affixed to the stable North American tectonic plate. See
AA3449.NA2011 for more information.
AA3449
AA3449.The horizontal coordinates are valid at the epoch date displayed above
AA3449.which is a decimal equivalence of Year/Month/Day.
AA3449
AA3449.The orthometric height was determined by differential leveling.
AA3449.The vertical network tie was performed by a horz. field party for horz.
AA3449.obs reductions. Reset procedures were used to establish the elevation.
AA3449
AA3449.Significant digits in the geoid height do not necessarily reflect accuracy.
AA3449.GEOID18 height accuracy estimate available here.
AA3449
AA3449.Click photographs - Photos may exist for this station.
AA3449
AA3449.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AA3449
AA3449.The Laplace correction was computed from DEFLEC18 derived deflections.
AA3449
AA3449.The ellipsoidal height was determined by GPS observations
AA3449.and is referenced to NAD 83.
AA3449
AA3449. The following values were computed from the NAD 83(2011) position.
AA3449
AA3449; North East Units Scale Factor Converg.
AA3449;SPC CA 2 - 684,593.877 2,144,416.520 MT 0.99992291 +1 03 21.4
AA3449;SPC CA 2 - 2,246,038.41 7,035,473.20 sFT 0.99992291 +1 03 21.4
AA3449;UTM 10 - 4,355,433.420 730,598.052 MT 1.00025477 +1 41 44.1
AA3449
AA3449! - Elev Factor x Scale Factor = Combined Factor
AA3449!SPC CA 2 - 0.99965980 x 0.99992291 = 0.99958274
AA3449!UTM 10 - 0.99965980 x 1.00025477 = 0.99991449
AA3449
AA3449_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SGJ3059855433(NAD 83)
AA3449
AA3449 SUPERSEDED SURVEY CONTROL
AA3449
AA3449 NAD 83(2007)- 39 19 03.34198(N) 120 19 30.52121(W) AD(2007.00) 0
AA3449 ELLIP H (02/10/07) 2169.099 (m) GP(2007.00)
AA3449 NAD 83(1994)- 39 19 03.33772(N) 120 19 30.51528(W) AD(1994.00) B
AA3449 ELLIP H (03/30/95) 2169.216 (m) GP(1994.00) 4 1
AA3449 NAVD 88 (03/30/95) 2192. (m) GEOID93 model used GPS OBS
AA3449 NGVD 29 2191.1 (m) 7189. (f) LEVELING 3
AA3449
AA3449.Superseded values are not recommended for survey control.
AA3449
AA3449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AA3449.See file dsdata.pdf to determine how the superseded data were derived.
AA3449
AA3449_MARKER: DB = BENCH MARK DISK
AA3449_SETTING: 66 = SET IN ROCK OUTCROP
AA3449_STAMPING: H 226 1932
AA3449_MARK LOGO: USGS
AA3449_MAGNETIC: N = NO MAGNETIC MATERIAL
AA3449_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
AA3449+STABILITY: POSITION/ELEVATION WELL
AA3449_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AA3449+SATELLITE: SATELLITE OBSERVATIONS - May 20, 2009
AA3449
AA3449 HISTORY - Date Condition Report By
AA3449 HISTORY - 1932 MONUMENTED USGS
AA3449 HISTORY - 19940119 GOOD NGS
AA3449 HISTORY - 19950903 GOOD CADT
AA3449 HISTORY - 19960820 GOOD CADT
AA3449 HISTORY - 20090520 GOOD INDIV
AA3449
AA3449 STATION DESCRIPTION
AA3449
AA3449'DESCRIBED BY US GEOLOGICAL SURVEY 1932 (EEH)
AA3449'FROM DONNER POST OFFICE NORTHEAST 1.1 MILES TO DONNER SUMMIT
AA3449'AIRPORT. AT DONNER SUMMIT AIRPORT, 7.2 FT. EAST OF EAST SIDE
AA3449'OF BUILDING MAINTAINED BY U.S. WEATHER BUREAU, IN ROCK LEDGE.
AA3449'A STANDARD TABLET STAMPED, 1932 H 226.
AA3449'REFERENCE MARK, 62 FT SOUTHWEST OF TABLET, ON ROCK LEDGE, A
AA3449'CHISLED SQURE.
AA3449
AA3449 STATION RECOVERY (1994)
AA3449
AA3449'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (GRH)
AA3449'NOT DESCRIBED
AA3449
AA3449 STATION RECOVERY (1995)
AA3449
AA3449'RECOVERY NOTE BY CALTRANS 1995 (ADD)
AA3449'THE STATION WAS RECOVERED. A COMPLETE NEW DESCRIPTION FOLLOWS. THE
AA3449'STATION IS LOCATED ON THE NORTH SIDE OF DONNER PASS ROAD (OLD US
AA3449'HIGHWAY 40) AT DONNER PASS, ABOUT 50 MI (80.5 KM) NORTHEAST OF AUBURN
AA3449'AND 8 MI (12.9 KM) WEST OF TRUCKEE. TO REACH THE STATION FROM THE
AA3449'DONNER PASS ROAD INTERCHANGE ON INTERSTATE HIGHWAY 80 (SODA SPRINGS -
AA3449'NORDEN EXIT) , GO EAST ON DONNER PASS ROAD FOR 3.7 MI (6.0 KM) TO A
AA3449'SIDE ROAD RIGHT, SUGAR BOWL ROAD. CONTINUE EAST ON DONNER PASS ROAD
AA3449'FOR 0.2 MI (0.3 KM) TO A SIDE ROAD RIGHT, LAKE MARY ROAD AND AN OLD
AA3449'EXCAVATION SITE ON THE LEFT, NORTH, SIDE OF DONNER PASS ROAD. PACK
AA3449'NORTHEAST ON A TRAIL ON THE EAST SIDE OF THE EXCAVATION SITE FOR ABOUT
AA3449'0.1 MI (0.2 KM) TO A ROCK AND BRICK FOUNDATION OF A FORMER WEATHER
AA3449'STATION AT THE HIGHEST POINT OF THE GRANITE BEDROCK AND THE STATION.
AA3449'THE TRAIL IS MARKED BY IRON POSTS PAINTED RED AND SET IN CONCRETE OR A
AA3449'DRILL HOLE IN GRANITE. THE STATION IS A US GEOLOGICAL SURVEY BENCH
AA3449'MARK DISK SET AT THE HIGHEST POINT OF THE GRANITE BEDROCK, ABOUT 150
AA3449'FT (45.7 M) SOUTH-SOUTHWEST OF AND ABOUT 21 FT (6.4 M) HIGHER THAN
AA3449'BENCH MARK UU 836, 53 FT (16.2 M) NORTH-NORTHEAST OF A METAL SIGN POST
AA3449'SET IN CONCRETE (NO SIGN ATTACHED) , 23.5 FT (7.2 M) EAST OF THE
AA3449'CENTER OF THE WEATHER STATION FOUNDATION, 22 FT (6.7 M) SOUTH OF A
AA3449'PINE TREE GROWING IN A CREVICE IN THE GRANITE, 6 FT (1.8 M) WEST OF
AA3449'THE EAST EDGE OF THE GRANITE BEDROCK AND ABOUT 4 FT (1.2 M) HIGHER
AA3449'THAN THE FOUNDATION. THE STATION WAS OCCUPIED AS PART OF THE STATE OF
AA3449'NEVADA HIGH ACCURACY REFERENCE NETWORK (HARN) SURVEY.
AA3449
AA3449 STATION RECOVERY (1996)
AA3449
AA3449'RECOVERY NOTE BY CALTRANS 1996 (PTD)
AA3449'RECOVERED AS DESCRIBED.
AA3449
AA3449 STATION RECOVERY (2009)
AA3449
AA3449'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009
AA3449'IN PLAIN SIGHT WITH X IN FADED WHITE PAINT, NEAR THE REMAINS OF THE
AA3449'FOUNDATION.
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