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Bench Mark Sheet for 8720267, PABLO CREEK 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  5

                                                                                
Station ID: 8720267                         PUBLICATION DATE:  01/23/2004
Name:       PABLO CREEK                                       
            FL
NOAA Chart: 11488                           Latitude:   30° 19.4' N (  30.32330)
USGS Quad:  JACKSONVILLE BEACH              Longitude:  81° 26.3' W ( -81.43830)


To reach the tidal bench marks from the intersection of State Highway A1A and
State Highway 10 (Atlantic Boulevard) in Jacksonville, proceed west on State
Highway 10 1.21 km (0.75 mi) to the old highway, which is 23 m (75 ft) north of
the new high rise bridge over the Intracoastal Waterway, then turn right and
proceed west on the old highway for 0.6 km (0.4 mi) to the east bank of the
waterway and Capt. Johnsons Fish Camp.  The bench marks are located in the area
around the fish camp.  The tide gage and staff were located on the fish camp
pier.


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


                 PRIMARY BENCH MARK STAMPING:  0267 D
                         DESIGNATION:          872 0267 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5152
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1441
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30° 19.4' N (  30.32389)          LONGITUDE:  81° 26.3' W ( -81.43833)


The primary bench mark is a disk located at Capt. Johnsons Fish Camp, 82 m (270
ft) NW of the centerline of Old Atlantic Boulevard, 27 m (89 ft) west of a
16-inch Cabbage Palm, 1 m (3 ft) east  of the NE corner of a metal building and
0.46 m (1.5 ft) east of a witness post.  The bench mark is set O.3 m (1.0 ft)
below ground level, crimped to the top of a copper-clad steel rod, driven 7.3 m
(24 ft) to refusal, and encased in a PVC pipe and concrete kickblock.  NOTE:  A
railroad tie retaining wall has been constructed on top of the mark.  One-third
of the disk is accessible.  Mark not found in 1992 by Florida Department of
Natural Resources and again in 1993 by US Power Squadron.

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

                                                                                
Station ID: 8720267                         PUBLICATION DATE:  01/23/2004
Name:       PABLO CREEK                                       
            FL
NOAA Chart: 11488                           Latitude:   30° 19.4' N (  30.32330)
USGS Quad:  JACKSONVILLE BEACH              Longitude:  81° 26.3' W ( -81.43830)


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


                         BENCH MARK STAMPING:  W 324 1970
                         DESIGNATION:          W 324

MONUMENTATION:           Bench Mark disk                       VM#:         5150
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0485
SETTING CLASSIFICATION:  Concrete walkway                      OPUS PID:        
LATITUDE:   30° 19.4' N (  30.32330)          LONGITUDE:  81° 26.1' W ( -81.43500)


The bench mark is a disk set on the top of the east end of the north concrete
walkway for the new high rise bridge over the Intracoastal Waterway, 4.24 m
(13.9 ft) north of the centerline of the westbound lane of the highway, 3.47 m
(11.4 ft) west of the east end of the walkway, and 0.15 m (0.5 ft) above the
level of the bridge floor.

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

                                                                                
Station ID: 8720267                         PUBLICATION DATE:  01/23/2004
Name:       PABLO CREEK                                       
            FL
NOAA Chart: 11488                           Latitude:   30° 19.4' N (  30.32330)
USGS Quad:  JACKSONVILLE BEACH              Longitude:  81° 26.3' W ( -81.43830)


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


                         BENCH MARK STAMPING:  X 324
                         DESIGNATION:          X 324

MONUMENTATION:           Survey disk                           VM#:         5153
AGENCY:                  Florida Department of Transportation
                         (FLDOT)                               IDB PID#:  BC0484
SETTING CLASSIFICATION:  Bridge abutment                       OPUS PID:        
LATITUDE:   30° 19.4' N (  30.32389)          LONGITUDE:  81° 26.2' W ( -81.43722)


The bench mark is a disk set in the top of the south end of the west abutment of
the old 46 m (150 ft) long bridge over the creek, 7 m (23 ft) south of the
centerline of the old highway, and 0.3 m (1 ft) above the level of the bridge
floor.

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

                                                                                
Station ID: 8720267                         PUBLICATION DATE:  01/23/2004
Name:       PABLO CREEK                                       
            FL
NOAA Chart: 11488                           Latitude:   30° 19.4' N (  30.32330)
USGS Quad:  JACKSONVILLE BEACH              Longitude:  81° 26.3' W ( -81.43830)


                            T I D A L   D A T U M S 


Tidal datums at PABLO CREEK based on:

     LENGTH OF SERIES:      4 MONTHS
     TIME PERIOD:           September 1977 - December 1977
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8720220 MAYPORT


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.255
     MEAN HIGH WATER                            MHW    =  1.193
     North American Vertical Datum              NAVD88 =  0.801
     MEAN SEA LEVEL                             MSL    =  0.670
     MEAN TIDE LEVEL                            MTL    =  0.619
     MEAN LOW WATER                             MLW    =  0.044
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0267 D                                      1.562    0.369
     W 324 1970                                  4.725    3.532
     X 324                                       3.079    1.886


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

                                                                                
Station ID: 8720267                         PUBLICATION DATE:  01/23/2004
Name:       PABLO CREEK                                       
            FL
NOAA Chart: 11488                           Latitude:   30° 19.4' N (  30.32330)
USGS Quad:  JACKSONVILLE BEACH              Longitude:  81° 26.3' W ( -81.43830)


                             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 8720267 PABLO CREEK, FL

Revised: 08/08/2018
NOAA / National Ocean Service
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