U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


To reach the tidal bench marks from City Park in Fernandina Beach, proceed NW on
Atlantic Avenue to the Fernandina Beach Marina.  The bench marks are in the area
between Beach and Alachua Streets going north to south, and 10th Street to City
Dock going east to west.  The tide station is on the Florida Petroleum
Corporation dock near the foot of Calhoun Street.


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


                 PRIMARY BENCH MARK STAMPING:  34 1923
                         DESIGNATION:          872 0030 TIDAL 34

MONUMENTATION:           Tidal Station disk                    VM#:          636
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0166
SETTING CLASSIFICATION:  Building                              OPUS PID:        
LATITUDE:   30° 40.4' N (  30.67269)          LONGITUDE:  81° 27.8' W ( -81.46378)


The primary bench mark is a disk set vertically in the east face of the Standard
Marine Supply Corporation building (101 North 2nd Street) at the intersection of
North 2nd and Alachua Streets, 9.91 m (32.5 ft) north of the centerline of
Alachua Street, 9.20 m (30.2 ft) west of the centerline of North 2nd Street,
0.30 (1.0 ft) north of the SW corner of the building, and 1.19 m (3.9 ft) above
street level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


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


                         BENCH MARK STAMPING:   
                         DESIGNATION:          872 0030 TIDAL 22
                         ALIAS:                NO STAMPING 1

MONUMENTATION:           Stone Monument                        VM#:          639
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0171
SETTING CLASSIFICATION:  Granite monument                      OPUS PID:        
LATITUDE:   30° 40.1' N (  30.66833)          LONGITUDE:  81° 27.6' W ( -81.46056)


The bench mark is the top of a granite monument with USCS cut into the top, at
the NE corner of 6th and Beach Streets,  14.39 m (47.2 ft) east of the
centerline of 6th Street, 2.90 m (9.5 ft) north of the north edge of a sidewalk,
2.19 m (7.2 ft) east of the SW corner of the porch at No. 130 6th Street, 0.30 m
(1.0 ft) SE of the SW corner of the house, and 0.06 m (0.2 ft) below ground
level.  NOTE:  The mark was originally known as Tidal 22.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


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


                         BENCH MARK STAMPING:  E 3 1916 18.989
                         DESIGNATION:          E 3

MONUMENTATION:           Bench Mark disk                       VM#:          642
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0167
SETTING CLASSIFICATION:  Post Office                           OPUS PID:        
LATITUDE:   30° 40.3' N (  30.67117)          LONGITUDE:  81° 27.7' W ( -81.46194)


The bench mark is a disk set vertically in the south face of the Post Office at
401 Centre Street, 15.61 m (51.2 ft) north of the centerline of Centre Street,
0.09 m (0.3 ft) east of the SW corner of the building, and1.49 m (4.9 ft) above
street level.



                         BENCH MARK STAMPING:  38 1923
                         DESIGNATION:          872 0030 TIDAL 38

MONUMENTATION:           Tidal Station disk                    VM#:          644
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0175
SETTING CLASSIFICATION:  School house                          OPUS PID:        
LATITUDE:   30° 40.2' N (  30.67044)          LONGITUDE:  81° 27.5' W ( -81.45753)


The bench mark is a disk set vertically in the north face of a school house
(vacant) at 914 Atlantic Avenue, 15.79 m (51.8 ft) south of the avenue
centerline, 0.40 m (1.3 ft) east of the NW corner of the building, and 2.01 m
(6.6 ft) above the level of the avenue.  NOTE--The stamping is barely legible.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


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


                         BENCH MARK STAMPING:  37 RESET 1970
                         DESIGNATION:          872 0030 TIDAL 37 RESET

MONUMENTATION:           Tidal Station disk                    VM#:          645
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0174
SETTING CLASSIFICATION:  Concrete parapet                      OPUS PID:        
LATITUDE:   30° 40.3' N (  30.67086)          LONGITUDE:  81° 27.5' W ( -81.45844)


The bench mark is a disk set in the east parapet at the south entrance to the
Bell Tower for the St. Peters Episcopal Church at the intersection of 8th Street
and Atlantic Avenue, 33.71 m (110.6 ft) north of the centerline of 8th Street,
15.70 m (51.5 ft) north of the centerline of Atlantic Avenue, 1.40 m (4.6 ft)
east of the center of the entrance, and 1.19 m (3.9 ft) above the level of the
avenue.



                         BENCH MARK STAMPING:  NO 1 1972
                         DESIGNATION:          872 0030 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:          646
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC1542
SETTING CLASSIFICATION:  Concrete sea wall                     OPUS PID:        
LATITUDE:   30° 40.3' N (  30.67117)          LONGITUDE:  81° 27.9' W ( -81.46544)


The bench mark is a disk set in top of a concrete sea wall at No. 1 South Front
Street, 42.21 m (138.5 ft) west of and level with the centerline of Front
Street, 5.79 m (19.0 ft) SW of the SE corner of Brets Waterway Cafe at No. 1
South Front Street, 0.91 m (3.0 ft) south of the south face of a bulkhead, and
0.09 m (0.3 ft) east of the west edge of the the sea wall

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


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


                         BENCH MARK STAMPING:  NO 2 1974
                         DESIGNATION:          872 0030 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:          648
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1543
SETTING CLASSIFICATION:  Concrete retaining wall               OPUS PID:        
LATITUDE:   30° 40.2' N (  30.67042)          LONGITUDE:  81° 27.9' W ( -81.46536)


The bench mark is a disk set in a concrete retaining wall along the east bank of
Amelia River at No. 3 South Front Street, 81.11 m (266.1 ft) south of Bench Mark
NO 1 1972, 3.41 m (11.2 ft) north of the north edge of a boat ramp, 2.99 m (9.8
ft) NW of the SW corner of the Amelia Island Charter Boat Office at No. 3 South
Front Street, and 1.01 m (3.3 ft) above the level of the street.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


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


                         BENCH MARK STAMPING:  36 1923
                         DESIGNATION:          872 0030 TIDAL 36
                         ALIAS:                NO STAMPING 2

MONUMENTATION:           Tidal Station disk                    VM#:          649
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0160
SETTING CLASSIFICATION:  Building                              OPUS PID:        
LATITUDE:   30° 40.2' N (  30.66944)          LONGITUDE:  81° 27.8' W ( -81.46361)


The bench mark is a disk set vertically in the north wall of City Hall at the SE
corner of Ash and Second Streets, 11.70 m (38.4 ft) south of the centerline of
Ash Street, 4.60 m (15.1 ft) east of the NW corner of the building, and 1.19 m
(3.9 ft) above street level.  NOTE: the stamping is illegible.



                         BENCH MARK STAMPING:  0030 L 1987
                         DESIGNATION:          872 0030 L TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         1771
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  BC2522
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   30° 40.3' N (  30.67131)          LONGITUDE:  81° 27.9' W ( -81.46472)


The bench mark is a disk located at the intersection of Front and Centre
Streets, 17.80 m (58.4 ft) NW of the NW corner of the Chamber of Commerce
building, 15.09 m (49.5 ft) east of the center of Front Street, 10.21 m (33.5
ft) south of the centerline of Centre Street, and 0.21 m (0.7 ft) north of a
witness post.  The bench mark is crimped to the top of a stainless steel rod
driven 12.80 m (42.0 ft) to refusal, and encased in a 5-inch PVC pipe and
concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


                            T I D A L   D A T U M S 


Tidal datums at FERNANDINA BEACH, AMELIA RIVER based on:

     LENGTH OF SERIES:      17 Years
     TIME PERIOD:           1/1983-12/1994 ; 1/1997-12/2001
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:   


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

     HIGHEST OBSERVED WATER LEVEL (10/02/1898)         =  4.115
     MEAN HIGHER HIGH WATER                     MHHW   =  1.999
     MEAN HIGH WATER                            MHW    =  1.892
     North American Vertical Datum              NAVD88 =  1.165
     MEAN SEA LEVEL                             MSL    =  1.004
     MEAN TIDE LEVEL                            MTL    =  0.975
     MEAN LOW WATER                             MLW    =  0.057
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/24/1940)         = -1.250

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     34 1923                                     4.252    2.360
     872 0030 TIDAL 22                           6.791    4.899
     E 3 1916 18.989                             6.613    4.721
     38 1923                                     9.330    7.438
     37 RESET 1970                               9.115    7.223
     NO 1 1972                                   2.802    0.910
     NO 2 1974                                   2.785    0.893
     36 1923                                     4.932    3.040
     0030 L 1987                                 2.950    1.058


Foot Notes:

 

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                                                
Station ID: 8720030                         PUBLICATION DATE:  04/21/2003
Name:       FERNANDINA BEACH, AMELIA RIVER                    
            FL
NOAA Chart: 11502                           Latitude:   30° 40.3' N (  30.67170)
USGS Quad:  FERNANDINA BEACH                Longitude:  81° 27.9' W ( -81.46500)


                             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.