Bench Mark Sheet for 8720215, Navy Fuel Depot 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  6

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


To reach the tidal bench marks from the intersection of U.S. Highway 17 (Main
Street) and Heckscher Drive, proceed 1.1 km (0.7 mi) east on Heckscher Drive to
Sommers Road, the paved drive leading south into the Navy Fuel Depot, then
follow the driveway to the large concrete fuel loading pier on the north shore
of St. Johns River.  The bench marks are along Heckscher Drive, Sommers Road and
near the fuel pier.  The tide gage and staff were located on a platform in the
St. Johns River.


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


                 PRIMARY BENCH MARK STAMPING:  NO 3 1958
                         DESIGNATION:          872 0215 TIDAL 3

MONUMENTATION:           Tidal Station disk                    VM#:         5095
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0275
SETTING CLASSIFICATION:  Concrete base for building            OPUS PID:        
LATITUDE:   30° 24.1' N (  30.40170)          LONGITUDE:  81° 37.5' W ( -81.62500)


The primary bench mark is a disk set on the top of the west end of the concrete
base for the foundation of building 92, 15 m (48 ft) north of the center of a
large steel gate for the entrance to Pier 2, 6 m (20 ft) north of the centerline
of a black-topped street, and 0.27 m (0.9 ft) SE of the SW corner of building
92.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  6

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


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


                         BENCH MARK STAMPING:  BM OIL 3 1945
                         DESIGNATION:          OIL 3

MONUMENTATION:           Survey disk                           VM#:         5093
AGENCY:                  US Army Corps of Engineers (USE)      IDB PID#:  BC0272
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 24.1' N (  30.40167)          LONGITUDE:  81° 37.5' W ( -81.62528)


The bench mark is a disk set on the top of a concrete monument, 46 m (150 ft) NE
of the north end of Pier 1, 13 m (42 ft) south of the centerline of the street,
5.06 m (16.6 ft) north of the SW corner of building 30, and 0.58 m (1.9 ft) west
of the west face of building 30.



                         BENCH MARK STAMPING:  NO 2 1958
                         DESIGNATION:          872 0215 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:         5094
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0274
SETTING CLASSIFICATION:  Concrete head wall                    OPUS PID:        
LATITUDE:   30° 24.0' N (  30.40003)          LONGITUDE:  81° 37.5' W ( -81.62556)


The bench mark is a disk set on the top of the east end of the north concrete
head wall for a culvert, 50 m (165 ft) NE of the north end of Pier 1, 22 m (73
ft) north of and directly across the street from bench mark BM OIL 3 1945, 7 m
(24 ft) north of the centerline of an east-west street, and 7 m (23 ft) east of
the centerline of the street leading north, opposite building 30.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  6

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


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


                         BENCH MARK STAMPING:  0215 D 1977
                         DESIGNATION:          872 0215 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         5096
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1557
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   30° 24.0' N (  30.40011)          LONGITUDE:  81° 38.0' W ( -81.63306)


The bench mark is a disk set in a concrete slab supporting the Guard House, 14 m
(47 ft) NW of the front door of the Administration Building, 7.16 m (23.5 ft)
east of the SW corner of the entrance gate, and 4.24 m (13.9 ft) south of the
centerline of Sommers Road.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  6

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


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


                         BENCH MARK STAMPING:  B 325 1970
                         DESIGNATION:          B 325

MONUMENTATION:           Bench Mark disk                       VM#:         5097
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  BC0265
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID#: BC0265
LATITUDE:   30° 24.4' N (  30.40694)          LONGITUDE:  81° 38.4' W ( -81.63917)


The bench mark is a disk set in the top of a concrete monument near the NW
corner of a high steel fence around a power sub-station at the junction of
Sommers Road and Hecksher Drive, 33.16 m (108.8 ft) west of the west rail of a
spur track, 29 m (94 ft) south of the centerline of Heckscher Drive, 17 m (56
ft) east of the centerline of Sommers Road, 0.6 m (2 ft) west of a metal witness
post, 0.6 m (1.9 ft) east of the NW corner fence post, and 0.3 m (1 ft) north of
the fence line.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  6

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


                            T I D A L   D A T U M S 


Tidal datums at JACKSONVILLE, NAVY FUEL DEPOT 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   =  0.854
     MEAN HIGH WATER                            MHW    =  0.814
     North American Vertical Datum              NAVD88 =  0.518
     MEAN SEA LEVEL                             MSL    =  0.420
     MEAN TIDE LEVEL                            MTL    =  0.419
     MEAN LOW WATER                             MLW    =  0.023
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 3 1958                                   1.978    1.164
     BM OIL 3 1945                               1.791    0.977
     NO 2 1958                                   1.780    0.966
     0215 D 1977                                 2.547    1.733
     B 325 1970                                  2.159    1.345


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

                                                                                
Station ID: 8720215                         PUBLICATION DATE:  01/23/2004
Name:       JACKSONVILLE, NAVY FUEL DEPOT                     
            FL
NOAA Chart: 11491                           Latitude:   30° 24.0' N (  30.40000)
USGS Quad:  ARLINGTON                       Longitude:  81° 37.6' W ( -81.62670)


                             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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