RD2078 ***********************************************************************
RD2078  DESIGNATION -  BLUFF
RD2078  PID         -  RD2078
RD2078  STATE/COUNTY-  OR/CLATSOP
RD2078  USGS QUAD   -  ARCH CAPE (1985)
RD2078
RD2078                         *CURRENT SURVEY CONTROL
RD2078  ___________________________________________________________________
RD2078* NAD 83(1991)-  45 51 27.02608(N)    123 57 50.57088(W)     ADJUSTED
RD2078* NAVD 88     -         7.50   (+/-2cm)      24.6    (feet)  VERTCON
RD2078  ___________________________________________________________________
RD2078  LAPLACE CORR-          22.07  (seconds)                    DEFLEC99
RD2078  GEOID HEIGHT-         -23.14  (meters)                     GEOID99
RD2078
RD2078  HORZ ORDER  -  THIRD
RD2078  VERT ORDER  -  THIRD ? (See Below)
RD2078
RD2078.The horizontal coordinates were established by classical geodetic methods
RD2078.and adjusted by the National Geodetic Survey in October 1991.
RD2078
RD2078.The NAVD 88 height was computed by applying the VERTCON shift value to
RD2078.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
RD2078.The vertical order pertains to the superseded datum.
RD2078
RD2078.The Laplace correction was computed from DEFLEC99 derived deflections.
RD2078
RD2078.The geoid height was determined by GEOID99.
RD2078
RD2078;                    North         East     Units   Scale      Converg.
RD2078;SPC OR N     -   249,223.302 2,231,066.802   MT  0.99996689 -2 27 24.0
RD2078;UTM  10      - 5,078,667.610   425,160.286   MT  0.99966886 -0 41 30.6
RD2078
RD2078:                Primary Azimuth Mark                     Grid Az
RD2078:SPC OR N     -  TILLAMOOK ROCK LIGHTHOUSE                336 50 37.9
RD2078:UTM  10      -  TILLAMOOK ROCK LIGHTHOUSE                335 04 44.5
RD2078
RD2078|---------------------------------------------------------------------|
RD2078| PID    Reference Object                     Distance      Geod. Az  |
RD2078|                                                           dddmmss.s |
RD2078|        BLUFF RM                             10.260 METERS 10929     |
RD2078| RD2074 LARGE ROCK OFF ARCH CAPE            APPROX. 5.9 KM 1941913.6 |
RD2078| RD2093 TILLAMOOK ROCK LIGHTHOUSE           APPROX. 9.8 KM 3342313.9 |
RD2078| RD2082 HAYSTACK ROCK                       APPROX. 3.0 KM 3534004.4 |
RD2078|---------------------------------------------------------------------|
RD2078
RD2078                          SUPERSEDED SURVEY CONTROL
RD2078
RD2078  NAD 83(1986)-  45 51 27.05025(N)    123 57 50.55139(W) AD(       ) 3
RD2078  NAD 27      -  45 51 27.65900(N)    123 57 46.05600(W) AD(       ) 3
RD2078  NGVD 29     -         6.42   (m)           21.1    (f) LEVELING    3
RD2078
RD2078.Superseded values are not recommended for survey control.
RD2078.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
RD2078.See file dsdata.txt to determine how the superseded data were derived.
RD2078
RD2078  HISTORY     - Date     Condition        Recov. By
RD2078  HISTORY     - 1926     MONUMENTED       CGS
RD2078  HISTORY     - 1935     MONUMENTED       USE
RD2078  HISTORY     - 1940     MONUMENTED       CGS
RD2078  HISTORY     - 1954     MONUMENTED       ORDT
RD2078  HISTORY     - 1971     MONUMENTED       NGS
RD2078  HISTORY     - 1977     MONUMENTED       NGS
RD2078
RD2078                          STATION DESCRIPTION
RD2078
RD2078''DESCRIBED BY COAST AND GEODETIC SURVEY 1926 (LGS)
RD2078''STATION IS SET IN A HUGE ROCK AT MIDWAY CLIFF, (SILVER POINT)
RD2078''ABOUT 3 MILES S OF ECOLA, (CANNON BEACH) JUST OPPOSITE THE
RD2078''NORTHERLY OF TWO LARGE ISLAND ROCKS OFF OF MIDWAY CLIFF (CORRECT
RD2078''NAME SILVER POINT).  THE HIGH-WATER LINE JUST REACHES THE STATION
RD2078''ROCK WHICH STANDS ABOUT 20 FEET ABOVE THE HIGH WATER.  THE MARK
RD2078''IS STAMPED BLUFF 1926.  THE STATION IS REACHED BY DRIVING DOWN
RD2078''THE BEACH FROM ECOLA (CORRECT NAME CANNON BEACH) OR THE WARREN
RD2078''HOTEL.
RD2078''
RD2078''STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS WEDGED IN
RD2078''DRILL HOLES AND SET IN THE SAME HUGE ROCK.
RD2078''
RD2078''A 12-FOOT STAND WAS USED.
RD2078
RD2078                          STATION RECOVERY (1935)
RD2078
RD2078''RECOVERY NOTE BY US ENGINEERS 1935
RD2078''STATION WAS RECOVERED AS DESCRIBED WITH THE FOLLOWING
RD2078''EXCEPTIONS--FROM CANNON BEACH DRIVE S ALONG COAST ROAD ABOUT 1.5
RD2078''MILES STOP IN THE FIRST SIDE-HILL CUT, AT THE STEEPEST PART, LOOK
RD2078''OVER THE SIDE TOWARD THE SEA AND FIND THE PLACE MOST NEARLY
RD2078''OPPOSITE THE NORTHERNMOST OF TWO LARGE ROCKS IN THE WATER,
RD2078''DESCEND THE STEEP SLOPE TO A LARGE ROCK THAT JUTS OUT INTO THE
RD2078''WATER.  STATION IS ON THIS ROCK.
RD2078
RD2078                          STATION RECOVERY (1940)
RD2078
RD2078''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LAM)
RD2078''STATION IS AT SILVER POINT ON CANNON BEACH, ABOUT 3 MILES S OF
RD2078''CANNON BEACH POST OFFICE.  STATION IS ABOUT 20 FEET ABOVE HIGH
RD2078''WATER, IN UPPER INCLINED SURFACE OF MASSIVE ROCK JUST E OF
RD2078''NORTHWARD OF TWO LARGE ISLAND ROCKS OFF SILVER POINT.  HIGH-WATER
RD2078''LINE JUST REACHES ROCK.  AUTOMOBILE MAY BE DRIVEN TO STATION AT
RD2078''HALF TIDE OR LESS.  STATION IS MARKED BY DISK STAMPED BLUFF 1926
RD2078''CEMENTED INTO ROCK, NEAR NW CORNER.
RD2078''
RD2078''REFERENCE MARK DISK CEMENTED INTO SE PART OF SAME MASSIVE ROCK,
RD2078''DISTANT 10.26 METERS (32.66 FEET) IN AZIMUTH 289 DEG 28 MIN 44
RD2078''SEC.  TILLAMOOK ROCK LIGHTHOUSE IS IN AZIMUTH 154 DEG 23 MIN
RD2078''13.5 SEC.  BOTH DISKS ARE BENCH MARKS OF PACIFIC POWER AND LIGHT
RD2078''COMPANY.
RD2078''
RD2078''BOTH MARKS IN GOOD CONDITION AUGUST 1940.
RD2078''
RD2078''TILLAMOOK ROCK LIGHTHOUSE IS GOOD AZIMUTH MARK FOR THIS STATION.
RD2078
RD2078                          STATION RECOVERY (1954)
RD2078
RD2078''RECOVERY NOTE BY OREGON DEPARTMENT OF TRANSPORTATION 1954
RD2078''ORIGINAL DESCRIPTION FITS PRESENT LOCATION OF MONUMENT.  THE
RD2078''MONUMENT HAS BEEN DISTURBED IN THAT THE DISK HAS BEEN BROKEN OFF
RD2078''BUT THE ROD REMAINS IN POSITION.
RD2078
RD2078                          STATION RECOVERY (1971)
RD2078
RD2078''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (DRT)
RD2078''STATION PRESUMABLY RECOVERED.  ONLY DRILL HOLES REMAIN.  ROCK
RD2078''IS BADLY WEATHERED.  TWO DRILL HOLES WERE IDENTIFIED, WITH STATION
RD2078''HOLE IDENTIFICATION MORE POSITIVE.  SLOPE DISTANCE BETWEEN STATION
RD2078''AND RM HOLES WAS MEASURED AND IS 34.5 FEET.  THE ORIGINAL DISTANCE
RD2078''IS 32.66 FEET, BUT IT IS NOT KNOWN IF THIS WAS A SLOPE
RD2078''MEASUREMENT.  TO REACH THE STATION FROM THE TOLOVANA PARK POST
RD2078''OFFICE, GO SOUTH ON CANNON BEACH RD. LOOP OF 0.15 MI. TO U.S.
RD2078''101 ACCESS ROAD INTERSECTION.  A LARGE PUBLIC PARKING LOT IS ON
RD2078''THE RIGHT.  TURN RIGHT AT INTERSECTION AND PROCEED TO BEACH.
RD2078''GO SOUTH ON BEACH FOR 1.05 MI.  STATION IS ON THE UPPER SLOPE
RD2078''FACE OF THE LARGEST ROCK AT BASE OF SLIDE, ABOUT 360 FEET EAST
RD2078''OF TUNNEL ROCK.  THE STATION IS 10.75 FT. (SLOPE) FROM THE
RD2078''HIGHEST POINT OF THIS ROCK, AND ON THE RANGE FORMED BY THE PEAKS
RD2078''OF THIS AND HAYSTACK RK TO NORTH.  STATION SHOULD BE
RD2078''REMARKED.
RD2078''
RD2078''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
RD2078''1 MI. S OF TOLOVANA PARK.
RD2078
RD2078                          STATION RECOVERY (1977)
RD2078
RD2078''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
RD2078''THE STATION MARK, AND REFERENCE MARK WERE SEARCHED FOR, BUT NOT
RD2078''RECOVERED.
RD2078''
RD2078''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
RD2078''3 MILES SOUTH OF CANNON BEACH.