SU0984 ***********************************************************************
SU0984  DESIGNATION -  BIG HOLE
SU0984  PID         -  SU0984
SU0984  STATE/COUNTY-  MT/SANDERS
SU0984  USGS QUAD   -  BIG HOLE PEAK (1964)
SU0984
SU0984                         *CURRENT SURVEY CONTROL
SU0984  ___________________________________________________________________
SU0984* NAD 83(1992)-  47 36 22.03312(N)    115 04 32.93311(W)     ADJUSTED
SU0984* NAVD 88     -      2123.5    (meters)    6967.     (feet)  VERTCON
SU0984  ___________________________________________________________________
SU0984  LAPLACE CORR-           2.84  (seconds)                    DEFLEC99
SU0984  GEOID HEIGHT-         -15.57  (meters)                     GEOID99
SU0984
SU0984  HORZ ORDER  -  FIRST
SU0984
SU0984.The horizontal coordinates were established by classical geodetic methods
SU0984.and adjusted by the National Geodetic Survey in July 1992.
SU0984
SU0984.The NAVD 88 height was computed by applying the VERTCON shift value to
SU0984.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
SU0984
SU0984.The Laplace correction was computed from DEFLEC99 derived deflections.
SU0984
SU0984.The geoid height was determined by GEOID99.
SU0984
SU0984;                    North         East     Units   Scale      Converg.
SU0984;SPC MT       -   387,832.386   181,331.451   MT  0.99944629 -4 04 43.4
SU0984;UTM  11      - 5,274,317.443   644,622.286   MT  0.99985703 +1 25 16.7
SU0984
SU0984:                Primary Azimuth Mark                     Grid Az
SU0984:SPC MT       -  BIG HOLE                                 121 31 11.0
SU0984:UTM  11      -  BIG HOLE                                 116 01 10.9
SU0984
SU0984|---------------------------------------------------------------------|
SU0984| PID    Reference Object                     Distance      Geod. Az  |
SU0984|                                                           dddmmss.s |
SU0984|        BIG HOLE                                           1172627.1 |
SU0984|        BIG HOLE                                           1172627.6 |
SU0984|        BIG HOLE RM 2                         5.880 METERS 13631     |
SU0984| SU1000 CAMELS HUMP LOOKOUT TOWER           APPROX.29.5 KM 1931434.2 |
SU0984| SU0987 PRISCILLA PEAK LOOKOUT HOUSE        APPROX.11.1 KM 3251200.7 |
SU0984|        BIG HOLE RM 1                         4.550 METERS 34600     |
SU0984| SU0982 BORDER PEAK LOOKOUT TOWER           APPROX.33.3 KM 3495734.5 |
SU0984|---------------------------------------------------------------------|
SU0984
SU0984                          SUPERSEDED SURVEY CONTROL
SU0984
SU0984  NAD 83(1986)-  47 36 22.03982(N)    115 04 32.92346(W) AD(       ) 1
SU0984  NAD 27      -  47 36 22.26523(N)    115 04 29.40942(W) AD(       ) 1
SU0984  NGVD 29     -      2122.3    (m)         6963.     (f) VERT ANG
SU0984
SU0984.Superseded values are not recommended for survey control.
SU0984.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
SU0984.See file dsdata.txt to determine how the superseded data were derived.
SU0984
SU0984_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
SU0984+STABILITY: POSITION/ELEVATION WELL
SU0984
SU0984  HISTORY     - Date     Condition        Recov. By
SU0984  HISTORY     - 1940     MONUMENTED       CGS
SU0984  HISTORY     - 1964     GOOD             USGS
SU0984  HISTORY     - 1968     GOOD             CGS
SU0984
SU0984                          STATION DESCRIPTION
SU0984
SU0984''DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (ANS)
SU0984''THE STATION IS ON THE HIGHEST POINT OF BIG HOLE PEAK WHICH
SU0984''IS THE HIGHEST IN THE VICINITY AND THE FIRST PEAK W (0.3 MILE)
SU0984''OF BIG HOLE LOOKOUT HOUSE AND ABOUT 13 MILES E OF THOMPSON
SU0984''FALLS AND ABOUT 14-1/2 MILES NW OF PLAINS.  THE TOP OF THE PEAK
SU0984''HAS A FEW LOW TREES TO THE W AND A VERY SHARP BLUFF TO THE N
SU0984''AND E.
SU0984''
SU0984''THE STATION MARK IS A STANDARD BRONZE DISK WEDGED IN A DRILL
SU0984''HOLE IN OUTCROPPING BEDROCK AND ABOUT 8 FEET W OF THE E EDGE
SU0984''OF BLUFF, FLUSH WITH THE GROUND.  IT IS STAMPED BIG HOLE 1940.
SU0984''
SU0984''REFERENCE MARK NO. 1 IS A STANDARD BRONZE DISK WEDGED IN
SU0984''A DRILL HOLE IN OUTCROPPING BEDROCK, ABOUT 1 FOOT W OF THE
SU0984''E EDGE OF BLUFF, FLUSH WITH THE GROUND, 1 FOOT BELOW THE
SU0984''STATION.  IT IS STAMPED BIG HOLE NO. 1, 1940.
SU0984''
SU0984''REFERENCE MARK NO. 2 IS A STANDARD BRONZE DISK WEDGED IN A
SU0984''DRILL HOLE IN OUTCROPPING BEDROCK, ABOUT 1 FOOT W OF THE E
SU0984''EDGE OF BLUFF, FLUSH WITH THE GROUND, 1 FOOT BELOW THE STATION.
SU0984''IT IS STAMPED BIG HOLE NO. 2, 1940.
SU0984''
SU0984''THE AZIMUTH MARK IS A STANDARD U.S.G.S. BENCH MARK SET IN
SU0984''OUTCROPPING BEDROCK, 10 FEET W OF THE W SIDE OF BIG HOLE
SU0984''LOOKOUT HOUSE, FLUSH WITH THE GROUND.  IT IS STAMPED BIG HOLE.
SU0984''
SU0984''THE STATION IS REACHED FROM THE POST OFFICE IN PLAINS BY GOING
SU0984''W ON STATE HIGHWAY 3 FOR 7.3 MILES TO WHITE SCHOOLHOUSE ON THE
SU0984''LEFT (S).  CONTINUE W FOR 0.35 MILE TO A DIRT ROAD LEADING
SU0984''RIGHT (N).  TURN N ONTO THIS DIRT ROAD AND GO 0.2 MILE TO MR.
SU0984''P. GRAYS BARN WHICH IS THE END OF TRUCK TRAVEL.  FROM HERE PACK
SU0984''N ALONG THE W SIDE OF MEADOW ON A TRACK ROAD AND THEN A TRAIL
SU0984''THROUGH THE WOODS FOR ABOUT 2 MILES TO A FORK IN THE TRAILS.
SU0984''TAKE CENTER FORK TRAIL WHICH IS NO. 368 AND POSTED BIG HOLE
SU0984''LOOKOUT 6-1/2 MILES AND FOLLOW THIS WELL TRAVELED AND MARKED
SU0984''TRAIL TO TOP OF MOUNTAIN AT THE LOOKOUT HOUSE.  CONTINUE W
SU0984''ALONG TOP OF RIDGE ABOUT 0.3 MILE TO THE HIGHEST POINT AND
SU0984''STATION.  WITH HORSES THE PACK IS ABOUT 4 HOURS AND AFOOT
SU0984''ABOUT 5 HOURS.  THE TRAIL IS AN EASY GRADE THROUGHOUT.
SU0984''
SU0984''HEIGHT OF LIGHT ABOVE STATION MARK - 1-1/2 METERS.
SU0984
SU0984                          STATION RECOVERY (1964)
SU0984
SU0984''RECOVERY NOTE BY US GEOLOGICAL SURVEY 1964
SU0984''STATION MARK - - STANDARD USC AND GS DISK, STAMPED--- BIG
SU0984''HOLE 1940 ---, CEMENTED IN LEDGE ROCK.
SU0984
SU0984                          STATION RECOVERY (1968)
SU0984
SU0984''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (LBG)
SU0984''THE STATION MARK, REFERENCE MARKS 1 AND 2, AND THE AZIMUTH MARK WERE
SU0984''RECOVERED IN GOOD CONDITION.  THE DISTANCE AND THE DIRECTION TO THE
SU0984''REFERENCE MARKS COMPARED FAVORABLY WITH THE 1940 OBSERVATIONS.
SU0984''A COMPLETE NEW DESCRIPTION FOLLOWS.
SU0984''
SU0984''THE STATION IS LOCATED ABOUT 14-1/2 MILES NORTHWEST OF PLAINS, 13
SU0984''MILES EAST OF THOMPSON FALLS ON THE HIGHEST POINT OF BIG HOLE PEAK
SU0984''WHICH IS THE NEXT PEAK WEST OF THE BIG HOLE LOOKOUT HOUSE.
SU0984''
SU0984''TO REACH THE STATION FROM THE POST OFFICE IN PLAINS, GO WEST ON
SU0984''U. S. HIGHWAY 10 A AND MONTANA STATE HIGHWAY 200 FOR 7.75 MILES TO A
SU0984''SIDE ROAD RIGHT AND SIGN WEEKSVILLE CREEK ROAD.  TURN RIGHT AND GO
SU0984''NORTH ON A GRAVELED ROAD FOR 0.05 MILE TO A FORK.  TAKE THE LEFT
SU0984''FORK AND GO NORTHERLY ON THE MAIN ROAD FOR 3.3 MILES TO A FORK,
SU0984''KEEP THE LEFT FORK AS PER SIGN BIG HOLE LOOKOUT 12, AND GO
SU0984''NORTHWESTERLY ON THE MAIN TRAVELED ROAD FOR 10.5 MILES TO A SIGN
SU0984''BIG HOLE LOOKOUT TRAIL NO 368, AND END OF TRUCK TRAVEL.  HERE PACK
SU0984''WESTERLY AND NORTHERLY ON A WELL MARKED TRAIL FOR 2 MILES TO
SU0984''A FORK IN THE TRAIL AND SIGN BIG HOLE LOOKOUT 0.2 MILE.  TAKE THE
SU0984''LEFT FORK UP HILL TO THE LOOKOUT HOUSE AND THE U. S. GEOLOGICAL
SU0984''SURVEY BENCH MARK THAT WAS USED FOR AN AZIMUTH MARK.  HERE PACK
SU0984''WESTERLY ON TRAIL NO 371 FOR 0.3 MILE TO THE TOP OF THE NEXT
SU0984''PEAK TO THE WEST AND THE STATION.  A THREE HOUR PACK ON A GOOD
SU0984''TRAIL.
SU0984''
SU0984''THE STATION MARK IS A STANDARD DISK STAMPED BIG HOLE 1940, CEMENTED
SU0984''IN A DRILL HOLE IN OUTCROPPING BED ROCK THAT IS FLUSH WITH THE
SU0984''GROUND SURFACE.  IT IS ABOUT 8 FEET WEST OF THE EAST EDGE OF THE
SU0984''BLUFF.
SU0984''
SU0984''REFERENCE MARK 1 IS A STANDARD DISK STAMPED BIG HOLE NO 1 1940,
SU0984''CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT IS FLUSH WITH
SU0984''THE GROUND SURFACE.  IT IS 1 FOOT WEST OF THE EAST EDGE OF THE
SU0984''BLUFF AND ABOUT 1 FOOT LOWER THAN THE STATION.
SU0984''
SU0984''REFERENCE MARK 2 IS A STANDARD DISK STAMPED BIG HOLE NO 2 1940,
SU0984''CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT IS FLUSH WITH
SU0984''THE GROUND SURFACE.  IT IS 1 FOOT WEST OF THE EAST EDGE OF THE
SU0984''BLUFF AND 1 FOOT LOWER THAN THE STATION.
SU0984''
SU0984''THE AZIMUTH MARK IS A U. S. GEOLOGICAL SURVEY BENCH MARK DISK STAMPED
SU0984''BIG HOLE, CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT IS
SU0984''FLUSH WITH THE GROUND SURFACE.  IT IS 12 FEET NORTHWEST OF THE
SU0984''SOUTHWEST CORNER OF THE BIG HOLE LOOKOUT HOUSE.
SU0984''
SU0984''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--13 MILES EAST OF
SU0984''THOMPSON FALLS.