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Bench Mark Sheet for 8728694, WHITE BEACH, EAST BAY

Superseded Epoch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Small blue map location marker Unpublished bench mark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  5

                                                                                
Station ID: 8728694                         PUBLICATION DATE:  10/30/2003
Name:       WHITE BEACH, EAST BAY                             
            FL
NOAA Chart: 11404                           Latitude:   29° 47.1' N (  29.78500)
USGS Quad:  BEVERLY                         Longitude:  84° 53.9' W ( -84.89830)


To reach the tidal bench marks from the intersection of U.S. Highway 98 and
State Road SR 65 proceed 13.8 km (8.6 mi) west on SR 65 to its intersection with
a dirt road on the left, turn left and proceed 4.6 km (2.9 mi) south to the end
of the road and a primitive boat ramp.  The bench marks are located between the
marsh grass and the shore, in the area along the shoreline.  The tide gage and
staff were located on a H structure in East Bay, 91 m (300 mi) offshore visible
for about 0.8 km (0.5 mi) when approaching.


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


                 PRIMARY BENCH MARK STAMPING:  8694 B 1978
                         DESIGNATION:          872 8694 B TIDAL

MONUMENTATION:           Survey disk                           VM#:         9864
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   29° 47.1' N (  29.78500)          LONGITUDE:  84° 53.8' W ( -84.89670)


The primary bench mark is a disk located 67.36 m (221 ft) east of bench mark
8694 A 1978 CLB, 66 m (215 ft) west of bench mark 8694 C 1978 CLB, 5.33 m (17.5
ft) north of the apparent shoreline, 2 m (7 ft) NW of a 0.37 m (1.2 ft) diameter
cabbage palm, and 1.16 m (3.8 ft) south of a metal witness post.  The bench mark
is crimped to the top of a copper-clad steel rod driven 15 m (48 ft) to refusal,
and encased in a PVC pipe and concrete kickblock, projecting 0.12 m (0.4 ft).

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                                                
Station ID: 8728694                         PUBLICATION DATE:  10/30/2003
Name:       WHITE BEACH, EAST BAY                             
            FL
NOAA Chart: 11404                           Latitude:   29° 47.1' N (  29.78500)
USGS Quad:  BEVERLY                         Longitude:  84° 53.9' W ( -84.89830)


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


                         BENCH MARK STAMPING:  8694 A 1978 CLB
                         DESIGNATION:          872 8694 A TIDAL

MONUMENTATION:           Survey disk                           VM#:         9863
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:        
SETTING CLASSIFICATION:  Concrete post                         OPUS PID:        
LATITUDE:   29° 47.1' N (  29.78500)          LONGITUDE:  84° 53.8' W ( -84.89670)


The bench mark is a disk set in a concrete post recessed 0.24 m (0.8 ft), 67 m
(221 ft) west of bench ,mark 8694 B 1978, 9.94 m (32.6 ft) SSW of a 0.61 m( 2.0
ft) cabbage palm, 2.90 m (9.5 ft) NNE of the apparent shoreline, and 1.19 m (3.9
ft) SW of a metal witness post.



                         BENCH MARK STAMPING:  8694 C 1978 CLB
                         DESIGNATION:          872 8694 C TIDAL

MONUMENTATION:           Survey disk                           VM#:         9865
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:        
SETTING CLASSIFICATION:  Concrete post                         OPUS PID:        
LATITUDE:   29° 47.1' N (  29.78500)          LONGITUDE:  84° 53.8' W ( -84.89670)


The bench mark is a disk set in a concrete post recessed 0.24 m (0.8 ft), 66 m
(215 ft) east of bench mark 8694 B 1978, 63 m (206 ft) west of bench mark 8694 D
1978, 11.73 m (38.5 ft) east of a 0.18 m (0.6 ft) diameter cypress tree, 6.77 m
(22.2 ft) NW of a 0.37 m (1.2 ft) diameter oak tree, and 2 m (6 ft) south of a
metal witness post.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                                                
Station ID: 8728694                         PUBLICATION DATE:  10/30/2003
Name:       WHITE BEACH, EAST BAY                             
            FL
NOAA Chart: 11404                           Latitude:   29° 47.1' N (  29.78500)
USGS Quad:  BEVERLY                         Longitude:  84° 53.9' W ( -84.89830)


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


                         BENCH MARK STAMPING:  8694 D 1978
                         DESIGNATION:          872 8694 D TIDAL

MONUMENTATION:           Survey disk                           VM#:         9866
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   29° 47.1' N (  29.78500)          LONGITUDE:  84° 53.8' W ( -84.89670)


The bench mark is a disk located 76 m (250 ft) WSW of bench mark 8694 E 1978
CLB, 63 m (206 ft) east of bench mark 8694 C 1978 CLB, 7.77 m (25.5 ft) NNE of
the apparent shoreline, 5.52 m (18.1 ft) west of a 0.24 m (0.8 ft) diameter
cabbage palm, and 0.94 m (3.1 ft) SW of a metal witness post.  The bench mark is
crimped to the top of a copper-clad steel rod driven 15 m (48 ft) to refusal,
and encased in a PVC pipe and concrete kickblock, projecting 0.15 m (0.5 ft).



                         BENCH MARK STAMPING:  8694 E 1978 CLB
                         DESIGNATION:          872 8694 E TIDAL

MONUMENTATION:           Survey disk                           VM#:         9867
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:        
SETTING CLASSIFICATION:  Concrete post                         OPUS PID:        
LATITUDE:   29° 47.1' N (  29.78500)          LONGITUDE:  84° 53.8' W ( -84.89670)


The bench mark is a disk set on a concrete post recessed 0.30 m (1.0 ft), 76 m
(250 ft) ENE of bench mark 8694 D 1978, 8.69 m (28.5 ft) north of the apparent
shoreline, 8.69 m (28.5 ft) NW of a multiple-trunked oak tree, 5.33 m (17.5 ft)
west of an 0.46 m (1.5 ft) diameter cabbage palm, and 1 m (4 ft) west of a metal
witness post.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                                                
Station ID: 8728694                         PUBLICATION DATE:  10/30/2003
Name:       WHITE BEACH, EAST BAY                             
            FL
NOAA Chart: 11404                           Latitude:   29° 47.1' N (  29.78500)
USGS Quad:  BEVERLY                         Longitude:  84° 53.9' W ( -84.89830)


                            T I D A L   D A T U M S 


Tidal datums at WHITE BEACH, EAST BAY based on:

     LENGTH OF SERIES:      3 MONTHS
     TIME PERIOD:           October 1978 - December 1978
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8728360 TURKEY POINT


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.601
     MEAN HIGH WATER                            MHW    =  0.557
     MEAN TIDE LEVEL                            MTL    =  0.363
     MEAN SEA LEVEL                             MSL    =  0.341
     MEAN LOW WATER                             MLW    =  0.170
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     8694 B 1978                                 1.261    0.704
     8694 A 1978 CLB                             0.890    0.333
     8694 C 1978 CLB                             1.341    0.784
     8694 D 1978                                 1.200    0.643
     8694 E 1978 CLB                             1.192    0.635


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

                                                                                
Station ID: 8728694                         PUBLICATION DATE:  10/30/2003
Name:       WHITE BEACH, EAST BAY                             
            FL
NOAA Chart: 11404                           Latitude:   29° 47.1' N (  29.78500)
USGS Quad:  BEVERLY                         Longitude:  84° 53.9' W ( -84.89830)


                             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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Products available at 8728694 WHITE BEACH, EAST BAY,

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services