U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
To reach the tidal bench marks from the east end of Flagler Memorial Bridge,
proceed east on Royal Poinciana Way for 0.2 km (0.2 mi) to Bradley Place, go
north on Bradley Place for 0.9 km (0.6 mi) where it becomes North Lake Way,
continue north on North Lake Way for 0.8 km (0.5 mi) to Tangier Avenue, go west
on Tangier Avenue for 0.08 km (0.05 mi) to its end. The bench marks are located
on a seawall north and south of Tangier Avenue. The tide gage and staff were
located on a pier in the vicinity of Ducks Nest Historical House.
T I D A L B E N C H M A R K S
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: W 315 1970
DESIGNATION: W 315
MONUMENTATION: Bench Mark disk VM#: 5598
AGENCY: National Geodetic Survey (NGS) IDB PID#: AD2861
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 44.1' N ( 26.73500) LONGITUDE: 80° 2.5' W ( -80.04170)
The primary bench mark is a disk set in the top of a concrete seawall along the
east bank of the Intracoastal Waterway (Lake Worth), 199 m (654 ft) north of the
extended centerline of Tangier Avenue, 49.59 m (162.7 ft) north of the
northernmost of two private docks, 4.08 m (13.4 ft) west of the west edge of an
asphalt walkway, and 1 m (2 ft) above the ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: E 310 1970
DESIGNATION: E 310
MONUMENTATION: Bench Mark disk VM#: 5596
AGENCY: National Geodetic Survey (NGS) IDB PID#: AD2862
SETTING CLASSIFICATION: Rock outcrop OPUS PID:
LATITUDE: 26° 44.5' N ( 26.74170) LONGITUDE: 80° 2.5' W ( -80.04170)
The bench mark is a disk set in the top of a rock cut near the SW corner of the
Palm Beach Country Club Golf Course, 22 m (72 ft) east of the east bank of the
Intracoastal Waterway (Lake Worth), 5 m (16 ft) west of the east end of a
concrete wall which is on top of the rock, 4 m (14 ft) NE of the centerline of
Country Club Road, and 1 m (3 ft) above the road level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: V 315 1970
DESIGNATION: V 315
MONUMENTATION: Bench Mark disk VM#: 5597
AGENCY: National Geodetic Survey (NGS) IDB PID#: AD2859
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 44.0' N ( 26.73330) LONGITUDE: 80° 2.5' W ( -80.04170)
The bench mark is a disk set in the top of a concrete seawall along the east
bank of the Intracoastal Waterway (Lake Worth), 64 m (210 ft) north of the
extended centerline of Tangier Avenue, 16.70 m (54.8 ft) south of the
southernmost one of two private docks, 6.83 m ( 22.4 ft) west of the west edge
of an asphalt walkway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: X 315 1970
DESIGNATION: X 315
MONUMENTATION: Bench Mark disk VM#: 5599
AGENCY: National Geodetic Survey (NGS) IDB PID#: AD2860
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 44.0' N ( 26.73330) LONGITUDE: 80° 2.5' W ( -80.04170)
The bench mark is a disk set in the top of a concrete seawall along the east
bank of the Intracoastal Waterway (Lake Worth), 137 m (450 ft) north of the
extended centerline of Tangier Avenue, 26.61 m (87.3 ft) west of the NW corner
of the Episcopalian Church of Bethesda by the Sea, 15 m (50 ft) north of the
extended centerline of the walkway to the historic church, 13.66 m (44.8 ft)
south of the northernmost of two private docks, and 0.3 m (1 ft) above the
ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: F 310 RESET 1972
DESIGNATION: F 310 RESET 1972
MONUMENTATION: Bench Mark disk VM#: 5600
AGENCY: National Geodetic Survey (NGS) IDB PID#: AD0670
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 44.0' N ( 26.73330) LONGITUDE: 80° 2.5' W ( -80.04170)
The bench mark is a disk set in the top of a concrete seawall along the east
bank of the Intracoastal Waterway (Lake Worth), 31 m (102 ft) south of the
extended centerline of Tangier Avenue and level with the ground behind the
seawall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
T I D A L D A T U M S
Tidal datums at PALM BEACH based on:
LENGTH OF SERIES: 1 YEAR
TIME PERIOD: May 1970 - April 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 (10/14/1979) = 1.279
MEAN HIGHER HIGH WATER MHHW = 0.936
MEAN HIGH WATER MHW = 0.876
North American Vertical Datum NAVD88 = 0.805
MEAN SEA LEVEL MSL = 0.470
MEAN TIDE LEVEL MTL = 0.466
MEAN LOW WATER MLW = 0.056
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (04/25/1971) = -0.327
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
W 315 1970 1.773 0.897
E 310 1970 2.916 2.040
V 315 1970 1.307 0.431
X 315 1970 1.736 0.860
F 310 RESET 1972 1.292 0.416
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 8
Station ID: 8722607 PUBLICATION DATE: 06/13/2003
Name: PALM BEACH
FL
NOAA Chart: 11466 Latitude: 26° 44.0' N ( 26.73330)
USGS Quad: PALM BEACH Longitude: 80° 2.5' W ( -80.04170)
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.