Bench Mark Sheet for 8728360, TURKEY POINT FL

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


To reach the tidal bench marks from intersection of Azelia Court Road and U.S.
98 / U.S. 319 Highway, which is the entrance to Lanark Village, proceed easterly
along U.S. Highway 98 for 9.2 km (5.7 mi) to the entrance to the Florida State
University Oceanographic Laboratory.  The bench marks are on the Oceanographic
Laboratory grounds.  The tide gage and staff are on the end of the Oceanographic
Laboratory pier.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  NO 1 1969
                         DESIGNATION:          872 8360 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:          762
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AS0359
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID#: AS0359
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The primary bench mark is a disk set flush in the south corner of an 5 m x 5 m
(18 ft x20 ft) concrete pad, bearing 0.3 m (1 ft) north of the south end of
poured bulkhead, 10.82 m (35.5 ft) north of saltwater pump house which is also
tide house, and 16.73 (54.9 ft) south of the southern-most lamp post on the
dock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  NO 2 1969
                         DESIGNATION:          872 8360 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:          763
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AS0358
SETTING CLASSIFICATION:  Concrete apron                        OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk set flush in a concrete apron, bearing 0.58 m (1.9 ft)
ESE of the southern-most column of the laboratory building, 3.38 m (11.1 ft)
north of the NW leg of a tank platform, and 23.32 m (76.5 ft) south of the SW
corner of the shop building.



                         BENCH MARK STAMPING:  NO 3 1969
                         DESIGNATION:          872 8360 TIDAL 3

MONUMENTATION:           Tidal Station disk                    VM#:          764
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AS0355
SETTING CLASSIFICATION:  Concrete bulkhead                     OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk set flush in the NW corner of the concrete bulkhead,
bearing 4.08 m (13.4 ft) north of the gasoline pumps, 15.82 m (51.9 ft) SW of NE
end of the bulkhead, 1.22 m (4 ft) NW of the small boat hoist, and 19.63 m (64.4
ft) west of the NW corner of the shop building.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  8360 J 1976
                         DESIGNATION:          872 8360 J TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:          765
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AS0357
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk set flush in the concrete foundation, bearing 0.3 m (1
ft) north of the north wall of the laboratory building, 7.80 m (25.6 ft) south
of the sidewalk, and 20.09 m (65.9 ft) east of the NW corner of the laboratory
building.



                         BENCH MARK STAMPING:  8360 K 1976
                         DESIGNATION:          872 8360 K TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:          766
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AS0957
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk set flush in a concrete post, 14.14 m (46.4 ft) ENE of
the NE corner of the maintenance building, 7.92 m (26.0 ft) south of the
centerline of the north drive of the laboratory, 2.13 m (7.0 ft) west of a storm
drain, and 1.52 m (5.0 ft) south of a small cabbage palm.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  8360 L 1991
                         DESIGNATION:          872 8360 L

MONUMENTATION:           Tidal Station disk                    VM#:        12554
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   29° 54.9' N (  29.91500)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk crimped to a stainless steel rod along the east side of
the entrance driveway to the FSU Marine Lab, 112 m (367 ft) east of the east end
of the US Highway 98 bridge over Alligator Creek, 27 m (87 ft) north of the NW
corner of Bldg. #411, 14.84 m (48.7 ft) south of the centerline of Highway 98,
8.69 m (28.5 ft) north of power pole 5-8926, and 6.95 m (22.8 ft) east of the
centerline of the driveway.  The bench mark is set 0.03 m (0.1 ft) below ground
level, crimped to a stainless steel rod driven 39 feet (12 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.



                         BENCH MARK STAMPING:  8360 N 1991
                         DESIGNATION:          872 8360 N

MONUMENTATION:           Tidal Station disk                    VM#:        12556
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk located 191 m (626 ft) east of the east end of the US
Highway 98 bridge over Alligator Creek, 86 m (283 ft) NE of the centerline
intersection of US Highway 98 and the entrance road to the FSU Marine Lab, 56 m
(183 ft)  WSW of guy pole No. 5-28928, and 5.79 m (19.0 ft) north of the
centerline of the highway.  The bench mark is set 0.06 m (0.2 ft) below ground
level, crimped to a stainless steel rod driven 45 feet (14 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  8360 P 1991
                         DESIGNATION:          872 8360 P

MONUMENTATION:           Tidal Station disk                    VM#:        12557
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   29° 55.0' N (  29.91670)          LONGITUDE:  84° 30.7' W ( -84.51170)


The bench mark is a disk locaed 270 m (886 ft) east of the east end of the US
Highway 98 bridge over Alligator Creek, 56 m (182 ft) WNW of power pole No.
58X540R, 22 m (73 ft) ENE of power pole No. N416, and 6 m (21 ft) south of the
centerline of US Highway 98.  The bench mark is set 0.06 m (0.2 ft) below ground
level, crimped to a stainless steel rod driven 46 feet (14 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                            T I D A L   D A T U M S 


Tidal datums at TURKEY POINT based on:

     LENGTH OF SERIES:      6 Years
     TIME PERIOD:           October 1989 - September 1995
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8727520 CEDAR KEY, GULF OF MEXICO


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (11/21/1985)         =  2.677
     MEAN HIGHER HIGH WATER                     MHHW   =  0.834
     MEAN HIGH WATER                            MHW    =  0.770
     North American Vertical Datum              NAVD88 =  0.506
     MEAN TIDE LEVEL                            MTL    =  0.477
     MEAN SEA LEVEL                             MSL    =  0.463
     MEAN LOW WATER                             MLW    =  0.185
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/19/1977)         = -1.145

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 1 1969                                   2.354    1.584
     NO 2 1969                                   3.110    2.340
     NO 3 1969                                   2.561    1.791
     8360 J 1976                                 4.217    3.447
     8360 K 1976                                 3.492    2.722
     8360 L 1991                                 4.101    3.331
     8360 N 1991                                 5.000    4.230
     8360 P 1991                                 5.245    4.475


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  7

                                                                                
Station ID: 8728360                         PUBLICATION DATE:  04/21/2003
Name:       TURKEY POINT                                      
            FL
NOAA Chart: 11405                           Latitude:   29° 54.9' N (  29.91500)
USGS Quad:  MCINTYRE                        Longitude:  84° 30.7' W ( -84.51170)


                             D E F I N I T I O N S


Mean Sea Level (MSL) is a tidal datum determined over a 19-year National Tidal
Datum Epoch.  It pertains to local mean sea level and should not be confused
with the fixed datums of North American Vertical Datum of 1988 (NAVD88).

NAVD88 is a fixed datum derived from a simultaneous, least squares, minimum
constraint adjustment of Canadian/Mexican/United States leveling observations.
Local mean sea level observed at Father Point/Rimouski, Canada was held fixed as
the single initial constraint.  NAVD88 replaces NGVD29 as the national
standard geodetic reference for heights.  Bench mark elevations relative to
NAVD88 are available from NGS through the World Wide Web at 
National Geodetic Survey.

NGVD29 is a fixed datum adopted as a national standard geodetic reference for
heights but is now considered superseded.  NGVD29 is sometimes referred to as
Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological
Survey Topographic Quads.  NGVD29 was originally derived from a general
adjustment of the first-order leveling networks of the U.S. and Canada after
holding mean sea level observed at 26 long term tide stations as fixed.
Numerous local and wide-spread adjustments have been made since establishment in
1929.  Bench mark elevations relative to NGVD29 are available from the National
Geodetic Survey (NGS) data base via the World Wide Web at 
National Geodetic Survey.

NAVD88 and NGVD29 are fixed geodetic datums whose elevation relationships to
local MSL and other tidal datums may not be consistent from one location to
another.

The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique
identifiers for bench marks in the tidal and geodetic databases, respectively.
Each bench mark in either database has a single, unique VM# and/or PID# assigned.
Where both VM# and PID# are indicated, both tidal and geodetic elevations are
available for the bench mark listed. The NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.

The NAVD88 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have NAVD88 elevations.
The NAVD88 elevation relationship shown in the table is derived from an average
of several bench mark elevations relative to tide station datum.  As a result of
this averaging, NAVD88 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from NAVD88 elevations listed for
each bench mark in the NGS database.

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