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Bench Mark Sheet for 8720148, TIGER POINT, PUMPKIN HILLS 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  6

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


To reach the tidal bench marks from the intersection of U.S. Highway 17 and New
Berlin Road in Oceanway, proceed east along New Berlin Road 7.2 km (4.5 mi) to
its intersection with Cedar Point Road, then veer left and proceed east along
Cedar Point Road for 8.0 km (5.1 mi) to Pumpkin Hill Road, then turn left and
proceed north on Pumpkin Hill Road for 2.1 km (1.3 mi) to the dirt road leading
north, then veer left along the trail road for 0.08 km (0.05 mi) to a fork in
the road, then veer right and proceed north for 1.21 km (0.75 mi) to a second
fork in the road, then take the  left fork and continue north for 1.4 km (0.9
mi) to a third fork, then bear right and continue for 0.3 km (0.2 mi) to the end
of the trail road.  The bench marks are located along the dirt road running
parallel to Pumpkin Hill Creek.  The tide gage and staff were located on a 1 m
(4 ft) square structure in Pumpkin Hill Creek.


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


                 PRIMARY BENCH MARK STAMPING:  0148 A 1978
                         DESIGNATION:          872 0148 A

MONUMENTATION:           Tidal Station disk                    VM#:         5049
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1389
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30° 30.1' N (  30.50170)          LONGITUDE:  81° 29.7' W ( -81.49500)


The primary bench mark is a disk located 12 m (38 ft) east of the centerline of
the dirt road, 10 m (32 ft) south of a small bluff on the south side of Pumpkin
Hill Creek, and 0.3 m (1.0 ft) south of a witness post.  The bench mark is
crimped to the top of a copper-clad steel rod driven 14.6 m (48 ft) to refusal,
and encased in a PVC pipe and a concrete kickblock.

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

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


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


                         BENCH MARK STAMPING:  0148 B 1978
                         DESIGNATION:          872 0148 B

MONUMENTATION:           Tidal Station disk                    VM#:         5050
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1388
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   30° 30.1' N (  30.50170)          LONGITUDE:  81° 29.7' W ( -81.49500)


The bench mark is a disk located 44 m (143 ft) west of bench mark 0148 A 1978,
32 m (105 ft) west of the centerline of the trail road leading south, 17 m (57
ft) south of a small bluff on the south side of Pumpkin Hill Creek, 9.30 m (30.5
ft) south of the centerline of the east-west running dirt road leading to the
tide gage, and 0.3 m (1 ft) north of a witness post.  The bench mark is crimped
to the top of a copper-clad steel rod driven 12.2 m (40 ft) to refusal, and
encased in a PVC pipe and a concrete kickblock.



                         BENCH MARK STAMPING:  0148 C 1978
                         DESIGNATION:          872 0148 C

MONUMENTATION:           Tidal Station disk                    VM#:         5051
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1387
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 30.1' N (  30.50170)          LONGITUDE:  81° 29.7' W ( -81.49500)


The bench mark is a disk set in top of a concrete monument, 0.2 km (0.1 mi)
south of bench mark 0148 A 1978, 4 m (13 ft) north of a grass covered road, 4 m
(12 ft) east of a dirt road, 0.3 m (1.0 ft) west of a witness post, and 0.03 m
(0.1 ft) above ground level.

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

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


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


                         BENCH MARK STAMPING:  0148 D 1978
                         DESIGNATION:          872 0148 D

MONUMENTATION:           Tidal Station disk                    VM#:         5052
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1386
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 30.1' N (  30.50170)          LONGITUDE:  81° 29.7' W ( -81.49500)


The bench mark is a disk set in the top of a concrete monument, 0.2 km (0.1 mi)
south of bench mark 0148 C 1978, 6 m (21 ft) south of a fork in the dirt road,
3.54 m (11.6 ft) west of a dirt road, and 0.3 m (1.0 ft) NE of a witness post.



                         BENCH MARK STAMPING:  0148 E 1978
                         DESIGNATION:          872 0148 E

MONUMENTATION:           Tidal Station disk                    VM#:         5053
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  BC1385
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 30.1' N (  30.50170)          LONGITUDE:  81° 29.7' W ( -81.49500)


The bench mark is a disk set in top of a concrete monument, 0.3 km (0.2 mi)
south of bench mark 0148 D 1978, 5 m (18 ft) west of the dirt road, and 0.3 m
(1.0 ft) NE of a witness post.

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

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


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


                         BENCH MARK STAMPING:  0148 F 1978
                         DESIGNATION:          872 0148 F

MONUMENTATION:           Tidal Station disk                    VM#:        12100
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  DI0940
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   30° 30.0' N (  30.50000)          LONGITUDE:  81° 29.7' W ( -81.49500)


The bench mark is a disk set flush in top of a concrete monument, 76 m (250 ft)
south of bench mark 0148 A 1978, 55 m (179 ft) NNW of bench mark 0148 C 1978, 2
m (7 ft) west of the centerline of the dirt road, and 0.3 m (1.0 ft) west of a
witness post.

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

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


                            T I D A L   D A T U M S 


Tidal datums at TIGER POINT, PUMPKIN HILLS CREEK based on:

     LENGTH OF SERIES:      3 MONTHS
     TIME PERIOD:           January 1979 - March 1979
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8720030 FERNANDINA BEACH, AMELIA RIVER


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.633
     MEAN HIGH WATER                            MHW    =  1.546
     MEAN SEA LEVEL                             MSL    =  0.859
     MEAN TIDE LEVEL                            MTL    =  0.801
     MEAN LOW WATER                             MLW    =  0.056
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0148 A 1978                                 2.336    0.790
     0148 B 1978                                 2.095    0.549
     0148 C 1978                                 2.501    0.955
     0148 D 1978                                 2.457    0.911
     0148 E 1978                                 3.301    1.755
     0148 F 1978                                 2.614    1.068


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

                                                                                
Station ID: 8720148                         PUBLICATION DATE:  02/05/2004
Name:       TIGER POINT, PUMPKIN HILLS CREEK                  
            FL
NOAA Chart: 11489                           Latitude:   30° 30.1' N (  30.50170)
USGS Quad:  AMELIA CITY                     Longitude:  81° 29.7' W ( -81.49500)


                             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 8720148 TIGER POINT, PUMPKIN HILLS CREEK, FL

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