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Bench Mark Sheet for 8720221, FULTON, ST. JOHNS RIVER 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8720221                         PUBLICATION DATE:  01/23/2004
Name:       FULTON, ST. JOHNS RIVER                           
            FL
NOAA Chart: 11488                           Latitude:   30° 23.4' N (  30.39000)
USGS Quad:  EASTPORT                        Longitude:  81° 30.4' W ( -81.50670)


To reach the tidal bench marks from the intersection of Monument and Fort
Caroline Roads, proceed 0.8 km (0.5 mi) west of Fort Caroline Road to Fulton
Road, then 0.8 km (0.5 mi) north on Fulton Road to the end of the pavement,
continue 0.3 km (0.2 mi) on the dirt road to a fork in the road, then follow the
east fork to the waters edge.  The bench marks are on the shore and along the
roads leading to the station.  The tide gage and staff were 21 m (70 ft)
offshore on a 1 m x 1 m (4 ft x 4 ft) support platform.


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


                 PRIMARY BENCH MARK STAMPING:  0221 D 1977
                         DESIGNATION:          872 0221 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5114
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1412
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 22.7' N (  30.37833)          LONGITUDE:  81° 30.6' W ( -81.51028)


The primary bench mark is a disk set in the top of a concrete monument, 47 m
(153 ft) north of the intersection of Fort Caroline and Fulton Roads, 5.33 m
(17.5 ft) east of the centerline of Fulton Road, 4.57 m (15.0 ft) SSW of a 0.61
m (2.0 ft) diameter oak tree, 0.46 m (1.5 ft) west of a witness sign, and 0.24 m
(0.8 ft) north of the north edge of the concrete drive to # 4301 Fulton Road.

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

                                                                                
Station ID: 8720221                         PUBLICATION DATE:  01/23/2004
Name:       FULTON, ST. JOHNS RIVER                           
            FL
NOAA Chart: 11488                           Latitude:   30° 23.4' N (  30.39000)
USGS Quad:  EASTPORT                        Longitude:  81° 30.4' W ( -81.50670)


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


                         BENCH MARK STAMPING:  0221 E 1977
                         DESIGNATION:          872 0221 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5115
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1413
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   30° 22.1' N (  30.36778)          LONGITUDE:  81° 30.9' W ( -81.51528)


The bench mark is a disk set in the SW corner of the base of the northernmost
powerline structure, 126 m (415 ft) NE of a power pole, 24.38 m (80.0 ft) east
of the centerline of Fort Caroline Road, 20.1 m (66.0 ft) NW of the SE powerline
transformer, and 0.3 m (1 ft) east of a carsonite witness post.



                         BENCH MARK STAMPING:  0221 G 1982
                         DESIGNATION:          872 0221 G TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5117
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC2398
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   30° 23.2' N (  30.38611)          LONGITUDE:  81° 30.5' W ( -81.50778)


The bench mark is a disk located 0.96 km (0.6 mi) north of Fort Caroline Road,
22.71 m (74.5 ft) south of a power pole, 17.53 m (57.5 ft) north of the
centerline of Martha's Vineyard Court, 8.2 m (26.9 ft) east of the centerline of
Fulton Road, 1.65 m (5.4 ft) NW of the south end of a wooden fence with a stone
fence post, and 0.30 m (1.0 ft) west of a witness post, and 1.0 km (0.6 mi)
north of Fort Caroline Road.  The bench mark is set 0.91 m (3 ft) above the
road, crimped to the top of a stainless steel rod driven 9.75 m (32. ft)
refusal, and 6 cm (0.2 ft) below the level of the ground.

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

                                                                                
Station ID: 8720221                         PUBLICATION DATE:  01/23/2004
Name:       FULTON, ST. JOHNS RIVER                           
            FL
NOAA Chart: 11488                           Latitude:   30° 23.4' N (  30.39000)
USGS Quad:  EASTPORT                        Longitude:  81° 30.4' W ( -81.50670)


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


                         BENCH MARK STAMPING:  0221 K 1984
                         DESIGNATION:          872 0221 K TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5120
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  BC2397
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 23.1' N (  30.38500)          LONGITUDE:  81° 30.5' W ( -81.50833)


The bench mark is a disk set in the top of a concrete monument, 0.3 km (0.25 mi)
south of Bench Mark 0221 J 1984, 9.08 m (29.8 ft) SE of the centerline of Fulton
Road,  14.94 m (49.0 ft) NE of the centerline of Charles Bennett Drive, 5.39 m
(17.7 ft) NE of a wooden fence corner, 1.89 m (6.2 ft) SW of a 0.61 m x 0.61 m
(2 ft x 2 ft) stone column, 0.4 m (1.3 ft) NW of the wooden fence, 0.37 m (1.2
ft) NW of a carsonite witness post, and 0.03 m (0.1 ft) below the level of the
ground.

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

                                                                                
Station ID: 8720221                         PUBLICATION DATE:  01/23/2004
Name:       FULTON, ST. JOHNS RIVER                           
            FL
NOAA Chart: 11488                           Latitude:   30° 23.4' N (  30.39000)
USGS Quad:  EASTPORT                        Longitude:  81° 30.4' W ( -81.50670)


                            T I D A L   D A T U M S 


Tidal datums at FULTON, ST. JOHNS RIVER based on:

     LENGTH OF SERIES:      5 MONTHS
     TIME PERIOD:           October 1977 - February 1978
     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   =  1.193
     MEAN HIGH WATER                            MHW    =  1.131
     North American Vertical Datum              NAVD88 =  0.719
     MEAN SEA LEVEL                             MSL    =  0.588
     MEAN TIDE LEVEL                            MTL    =  0.580
     MEAN LOW WATER                             MLW    =  0.030
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0221 D 1977                                 6.897    5.766
     0221 E 1977                                11.499   10.368
     0221 G 1982                                10.636    9.505
     0221 K 1984                                 9.322    8.191


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

                                                                                
Station ID: 8720221                         PUBLICATION DATE:  01/23/2004
Name:       FULTON, ST. JOHNS RIVER                           
            FL
NOAA Chart: 11488                           Latitude:   30° 23.4' N (  30.39000)
USGS Quad:  EASTPORT                        Longitude:  81° 30.4' W ( -81.50670)


                             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 8720221 FULTON, ST. JOHNS RIVER, FL

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services