AA0299 ***********************************************************************
AA0299  TIDAL BM    -  This is a Tidal Bench Mark.
AA0299  DESIGNATION -  KNIGHT 2
AA0299  PID         -  AA0299
AA0299  STATE/COUNTY-  FL/MONROE
AA0299  USGS QUAD   -  MARATHON (1971)
AA0299
AA0299                         *CURRENT SURVEY CONTROL
AA0299  ___________________________________________________________________
AA0299* NAD 83(1990)-  24 42 25.31095(N)    081 07 29.09916(W)     ADJUSTED
AA0299* NAVD 88     -         8.093  (meters)      26.55   (feet)  ADJUSTED
AA0299  ___________________________________________________________________
AA0299  LAPLACE CORR-          -1.85  (seconds)                    DEFLEC99
AA0299  GEOID HEIGHT-         -22.16  (meters)                     GEOID99
AA0299  DYNAMIC HT  -           8.079 (meters)      26.51  (feet)  COMP
AA0299  MODELED GRAV-     978,967.0   (mgal)                       NAVD 88
AA0299
AA0299  HORZ ORDER  -  THIRD
AA0299  VERT ORDER  -  FIRST     CLASS II
AA0299
AA0299.The horizontal coordinates were established by classical geodetic methods
AA0299.and adjusted by the National Geodetic Survey in May 1991.
AA0299
AA0299.The orthometric height was determined by differential leveling
AA0299.and adjusted by the National Geodetic Survey in June 1991.
AA0299
AA0299.This Tidal Bench Mark is designated as VM 6305
AA0299.by the Center for Operational Oceanographic Products and Services.
AA0299
AA0299.The Laplace correction was computed from DEFLEC99 derived deflections.
AA0299
AA0299.The geoid height was determined by GEOID99.
AA0299
AA0299.The dynamic height is computed by dividing the NAVD 88
AA0299.geopotential number by the normal gravity value computed on the
AA0299.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
AA0299.degrees latitude (g = 980.6199 gals.).
AA0299
AA0299.The modeled gravity was interpolated from observed gravity values.
AA0299
AA0299;                    North         East     Units   Scale      Converg.
AA0299;SPC FL E     -    41,396.208   187,377.538   MT  0.99994314 -0 03 07.7
AA0299;UTM  17      - 2,732,514.066   487,381.845   MT  0.99960197 -0 03 07.7
AA0299
AA0299                          SUPERSEDED SURVEY CONTROL
AA0299
AA0299  NAD 83(1986)-  24 42 25.31119(N)    081 07 29.08762(W) AD(       ) 3
AA0299  NAD 27      -  24 42 23.79942(N)    081 07 29.82205(W) AD(       ) 3
AA0299  NGVD 29     -         8.515  (m)           27.94   (f) ADJUSTED    1 2
AA0299
AA0299.Superseded values are not recommended for survey control.
AA0299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AA0299.See file dsdata.txt to determine how the superseded data were derived.
AA0299
AA0299_MARKER: DS = TRIANGULATION STATION DISK
AA0299_SETTING: 32 = CONCRETE WINGWALL
AA0299_STAMPING: KNIGHT 2 1936
AA0299_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
AA0299+STABILITY: SURFACE MOTION
AA0299_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AA0299+SATELLITE: SATELLITE OBSERVATIONS - November 01, 1990
AA0299
AA0299  HISTORY     - Date     Condition        Recov. By
AA0299  HISTORY     - 1936     MONUMENTED       CGS
AA0299  HISTORY     - 1964     GOOD             CGS
AA0299  HISTORY     - 1966     GOOD             CGS
AA0299  HISTORY     - 1966     GOOD             NGS
AA0299  HISTORY     - 1976     GOOD             NGS
AA0299  HISTORY     - 1978     GOOD             NGS
AA0299  HISTORY     - 1982     GOOD             FLDNR
AA0299  HISTORY     - 1982     GOOD             LOCSUR
AA0299  HISTORY     - 1986     GOOD             USPSQD
AA0299  HISTORY     - 1988     GOOD             USPSQD
AA0299  HISTORY     - 1990     GOOD             USPSQD
AA0299  HISTORY     - 19901101 GOOD             FLDNR
AA0299  HISTORY     - 19970630 GOOD             FLDT
AA0299
AA0299                          STATION DESCRIPTION
AA0299
AA0299''DESCRIBED BY COAST AND GEODETIC SURVEY 1936 (ERM)
AA0299''STATION IS LOCATED ON THE S WING WALL OF THE E ABUTMENT OF THE
AA0299''KNIGHT KEY VIADUCT 13 FEET FROM THE CENTER LINE OF THE VIADUCT.
AA0299''
AA0299''REFERENCE MARKS TO BE ESTABLISHED WHEN HIGHWAY IS COMPLETED.
AA0299
AA0299                          STATION RECOVERY (1964)
AA0299
AA0299''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (GEV)
AA0299''STATION RECOVERED IN GOOD CONDITION.
AA0299''
AA0299''R.M. FOR KNIGHT 2, 1.758 METERS, 342 DEG 59 MIN FROM SOMBRERO KEY
AA0299''LIGHT 1857, WAS NOT FOUND.  HOWEVER, R.M. 2 FOR OLD STATION KNIGHT
AA0299''WAS FOUND SOUTHERLY ALONG WINGWALL 3.536 METERS FROM THE STATION.
AA0299''
AA0299''THE DESCRIPTION IS ADEQUATE, EXCEPT IT SHOULD READ ON THE SOUTH
AA0299''WINGWALL OF EAST ABUTMENT OF SEVEN MILE BRIDGE INSTEAD OF KNIGHT
AA0299''KEY VIADUCT.
AA0299
AA0299                          STATION RECOVERY (1966)
AA0299
AA0299''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (RRG)
AA0299''THE STATION AND REFERENCE MARK NO. 2 WAS FOUND AND IN GOOD
AA0299''CONDITION.  REFERENCE MARK NO. 1 WAS SEARCHED FOR BUT NOT
AA0299''RECOVERED.  STATION MAY BE REACHED BY GOING 2.9 MILES SOUTHWEST
AA0299''ALONG U.S. HIGHWAY 1 FROM THE POST OFFICE AT MARATHON TO EAST END
AA0299''OF SEVEN MILE BRIDGE AND STATION SITE.
AA0299''
AA0299''THE STATION IS SET ON TOP OF THE SOUTH CONCRETE WING WALL OF THE
AA0299''BRIDGE AND 12.5 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY.
AA0299''
AA0299''IT IS STAMPED KNIGHT 2 1936.
AA0299''
AA0299''REFERENCE MARK NO. 2 IS 11.4 FEET SOUTH-SOUTHEAST OF THE STATION,
AA0299''23 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY AND ABOUT 3 FEET
AA0299''BELOW THE LEVEL OF THE HIGHWAY AND SET IN BRIDGE WING WALL.  IT
AA0299''IS STAMPED KNIGHT NO 2 1935.
AA0299''
AA0299''REFERENCE MARK NO. 1 WAS NOT FOUND.  THE MEASUREMENT FROM THE
AA0299''STATION WOULD PUT THE MARK UNDER BRIDGE ABUTMENT.
AA0299
AA0299                          STATION RECOVERY (1966)
AA0299
AA0299''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966
AA0299''2.9 MI SW FROM MARATHON.
AA0299''ABOUT 2.9 MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE POST
AA0299''OFFICE AT MARATHON, SET ON THE TOP OF THE SOUTH CONCRETE WING
AA0299''WALL AT THE EAST END OF THE SEVEN MILE BRIDGE, 12.5 FEET SOUTH
AA0299''OF THE CENTER LINE OF THE HIGHWAY AND ABOUT 2 FEET BELOW THE
AA0299''LEVEL OF THE HIGHWAY.
AA0299
AA0299                          STATION RECOVERY (1976)
AA0299
AA0299''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
AA0299''THE STATION MARK AND REFERENCE MARK 2 WERE RECOVERED AND FOUND IN
AA0299''GOOD CONDITION, REFERENCE MARK 1 WAS NOT RECOVERED.  IT WOULD BE
AA0299''VERY DIFFICULT AND UNSAFE TO SET UP ON THIS STATION AS IT IS ONLY
AA0299''1.2 FEET EAST OF THE EDGE OF 25 FOOT DROP OFF INTO THE WATER AND
AA0299''1.7 FEET SOUTH OF EDGE OF BRIDGE AND VERY BUSY HIGHWAY.
AA0299''
AA0299''STATION IS LOCATED ABOUT 2 MILES SOUTHWEST OF MARATHAN ON THE
AA0299''SOUTH SIDE OF U.S. HIGHWAY 1 AND ON THE EAST END OF THE 7 MILE
AA0299''BRIDGE.
AA0299''
AA0299''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
AA0299''2 MILES SOUTHWEST OF MARATHON.
AA0299
AA0299                          STATION RECOVERY (1978)
AA0299
AA0299''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1982)
AA0299
AA0299''RECOVERY NOTE BY FL DEPT OF NAT RES 1982
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1982)
AA0299
AA0299''RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
AA0299''THIS MARKER IS IMBEDDED IN THE SEA WALL ON THE SOUTH SIDE AND EAST
AA0299''END OF OLD SEVEN MILE BRIDGE, ABOUT 10 FT. DOWN THE SLANTING SEA WALL
AA0299''FROM THE OLD BRIDGE.
AA0299
AA0299                          STATION RECOVERY (1986)
AA0299
AA0299''RECOVERY NOTE BY US POWER SQUADRON 1986 (HGB)
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1988)
AA0299
AA0299''RECOVERY NOTE BY US POWER SQUADRON 1988 (HGB)
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1990)
AA0299
AA0299''RECOVERY NOTE BY US POWER SQUADRON 1990 (RB)
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1990)
AA0299
AA0299''RECOVERY NOTE BY FL DEPT OF NAT RES 1990
AA0299''RECOVERED IN GOOD CONDITION.
AA0299
AA0299                          STATION RECOVERY (1997)
AA0299
AA0299''RECOVERY NOTE BY FLORIDA DEPARTMENT OF TRANSPORTATION 1997 (WG)
AA0299''FOUND AS DESCRIBED IN GOOD CONDITION