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Bench Mark Sheet for 8722654, WEST PALM BEACH 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


To reach the tidal bench marks from the U.S. Highway 1 (South Dixie Highway)
bridge over the West Palm Beach Canal, proceed north on U.S. Highway 1 for 0.16
km (0.1 mi) to Gregory Road, then turn right and proceed east on Gregory Road
for 1.13 km (0.7 mi) to its end at Flagler Drive, then turn right and proceed
south on Flagler Drive for 0.08 km (0.05 mi) to its end at Arlington Place, then
turn left and proceed east on Arlington Place for 0.08 km (0.05 mi) to the
intersection with Flagler Court.  The bench marks are located on Flagler Court,
Arlington Court, the bulkhead fronting the Intracoastal Waterway, and in the
vicinity of the railroad tracks.  The tide gage and staff were located at 8020
Flagler Court.  


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


                 PRIMARY BENCH MARK STAMPING:  NO 3 1970
                         DESIGNATION:          872 2654 TIDAL 3

MONUMENTATION:           Tidal Station disk                    VM#:         5608
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AD2798
SETTING CLASSIFICATION:  Concrete sidewalk                     OPUS PID:        
LATITUDE:   26° 38.7' N (  26.64500)          LONGITUDE:  80°  2.7' W ( -80.04500)


The primary bench mark is a disk set on the top of the west concrete sidewalk
along Flagler Court, near the north edge of the West Palm Beach Canal and east
side of the Intracoastal Waterway, between bench mark No 2 1970 and 4 described,
102.84 m (337.4 ft) south of bench  mark No 3 1970 described, 38.01 m (124.7 ft)
north of and across Arlington Place from TIDAL 2 described, 5.49 m (18.0  ft)
west of the center line of Flagler Court and .    NOTE:  West Palm Beach Canal
gauge.  

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

                                                                                
Station ID: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


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


                         BENCH MARK STAMPING:  NO 2 1970
                         DESIGNATION:          872 2654 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:         5607
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AD2795
SETTING CLASSIFICATION:  Concrete sidewalk                     OPUS PID:        
LATITUDE:   26° 38.7' N (  26.64500)          LONGITUDE:  80°  2.7' W ( -80.04500)


The bench mark is a disk set on the top of the south concrete sidewalk along
Arlington Court at the junction of Arlington Place and Flagler Court, near the
junction of the West Palm Beach Canal at the Intracoastal Waterway, 5.49 m (18.0
ft) south of the center line of Arlington Place, 7.01 m (23.0 ft) west of the
extended center line of Flagler Court leading north, 5.79 m (19.0 ft) west of
the center line of a concrete driveway leading to a residence at 8026 Arlington
Place and 0.15 m (0.5 ft) above the level of the court.



                         BENCH MARK STAMPING:  NO 4 1970
                         DESIGNATION:          872 2654 TIDAL 4

MONUMENTATION:           Tidal Station disk                    VM#:         5609
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AD2800
SETTING CLASSIFICATION:  Concrete sidewalk                     OPUS PID:        
LATITUDE:   26° 38.8' N (  26.64670)          LONGITUDE:  80°  2.7' W ( -80.04500)


The bench mark is a disk set 102.87 m (337.5 ft) north of bench mark No 3 1970
described, 73.76 m (242.0 ft) east along Flagler Court from the center of the
junction of Flagler Court and Flagler Drive, 5.49 m (18.0 ft) west of the center
line of Flagler Court, set on the top of the concrete sidewalk of Flagler Court
and 0.15 m (0.5 ft) above the level of the street.

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

                                                                                
Station ID: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


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


                         BENCH MARK STAMPING:  2654 F 1986
                         DESIGNATION:          872 2654 F TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        15818
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  AD8074
SETTING CLASSIFICATION:  Concrete sidewalk                     OPUS PID:        
LATITUDE:   26° 38.8' N (  26.64670)          LONGITUDE:  80°  2.8' W ( -80.04670)


The bench mark is a disk set in the top of a concrete sidewalk of Flagler Court,
25.91 m (85.0 ft) east of the centerline of Flagler Drive, 6.10 m (20.0 ft) ESE
of the SW fence corner at house #7850 Flagler Drive, and 4.57 m (15.0 ft) north
of the centerline of Flagler Court.



                         BENCH MARK STAMPING:  3205 1969 JAX FLA
                         DESIGNATION:          3205 FCE USE

MONUMENTATION:           Survey disk                           VM#:        18770
AGENCY:                  US Army Corps of Engineers (USE)      IDB PID#:  AD2797
SETTING CLASSIFICATION:  Concrete Monument                     OPUS PID:        
LATITUDE:   26° 38.7' N (  26.64500)          LONGITUDE:  80°  2.7' W ( -80.04500)


The bench mark is a disk set in the top of a concrete post which is partly
connected to the bulkhead and 0.76 m (2.5 ft) west of the east face of the
bulkhead, located on the property of 8020 Flagler Court at the 45 degree bend in
the sea wall, near the NW junction of the Intracoastal Waterway and the West
Palm Beach Canal leading westerly, and 2.90 m (9.5 ft) north of the steel pipe
for the floatwell for tide gauge.

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

                                                                                
Station ID: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


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


                         BENCH MARK STAMPING:  M 402 1991
                         DESIGNATION:          M 402

MONUMENTATION:           Vertical Control disk                 VM#:        18771
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  AD8033
SETTING CLASSIFICATION:  Bridge Abutment                       OPUS PID:        
LATITUDE:   26° 38.7' N (  26.64500)          LONGITUDE:  80°  3.4' W ( -80.05667)


The bench mark is a disk set in the west end of the bridge seat of the north
concrete abutment of the highway bridge spanning the canal, located at the
intersection of West Palm Beach Canal and Dixie Highway, 11.80 m (38.7 ft) west
of the highway centerline, 3.11 m (10.2 ft) south of the north end of the west
bridge rail, and 1.31 m (4.3 ft) below the level of the highway.

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

                                                                                
Station ID: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


                            T I D A L   D A T U M S 


Tidal datums at WEST PALM BEACH based on:

     LENGTH OF SERIES:      1 YEAR
     TIME PERIOD:           January 1971 - December 1971
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8723170 MIAMI BEACH (CITY PIER)


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

     HIGHEST OBSERVED WATER LEVEL (11/05/1971)         =  1.281
     MEAN HIGHER HIGH WATER                     MHHW   =  0.854
     MEAN HIGH WATER                            MHW    =  0.801
     North American Vertical Datum              NAVD88 =  0.769
     MEAN TIDE LEVEL                            MTL    =  0.426
     MEAN SEA LEVEL                             MSL    =  0.415
     MEAN LOW WATER                             MLW    =  0.050
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (02/10/1971)         = -0.237

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 3 1970                                   1.607    0.806
     NO 2 1970                                   1.677    0.876
     NO 4 1970                                   1.716    0.915
     2654 F 1986                                 1.693    0.892
     3205 1969 JAX FLA                           1.736    0.935
     M 402 1991                                  4.904    4.104


Foot Notes:

Geodetic heights of the bench marks meet all NOAA/NOS/NGS quality control
standards for Second Order, Class 1 leveling.  It is advised that a confirmation
set of levels be established for bench marks 3205 1969 JAX FLA and M 402 1991 to
verify height differences before using tidal bench mark elevation information.

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

                                                                                
Station ID: 8722654                         PUBLICATION DATE:  12/08/2010
Name:       WEST PALM BEACH                                   
            FL
NOAA Chart: 11466                           Latitude:   26° 38.7' N (  26.64500)
USGS Quad:  PALM BEACH                      Longitude:  80°  2.7' W ( -80.04500)


                             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 8722654 WEST PALM BEACH, FL

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services