U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8728853 PUBLICATION DATE: 06/28/2011
Name: WHITE CITY, INTERCOASTAL WATER WAY, FL
FL
NOAA Chart: 11393 Latitude: 29° 52.8' N ( 29.88069)
USGS Quad: WHITE CITY Longitude: 85° 13.3' W ( -85.22144)
To reach the tidal bench marks from the junction of U.S. Highway 98 and State
Highway 71 at Port St. Joe, proceed NE on State Highway 71 for 10.9 km (6.8 mi)
to the F. Eglin Bayless Bridge over the Intracoastal Waterway. At the north end
of the bridge, turn left onto Pridgeon Road and follow to the White City Park.
The bench marks are located east of the bridge on the White City Park property.
The tide gauge and DCP are located on the south side of the park between two
boat ramps.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 8853 A 1977 CLB
DESIGNATION: 872 8853 A TIDAL
MONUMENTATION: Bench Mark disk VM#: 9897
AGENCY: US Army Corps of Engineers (USE) IDB PID#: AS0915
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 29° 52.9' N ( 29.88142) LONGITUDE: 85° 13.3' W ( -85.22144)
The primary bench mark is a disk set in the top of a concrete monument, 37.89 m
(124.3 ft) SE of the centerline of the highway, 16 m (52 ft) NE of a 0.61 m (2.0
ft) diameter palm tree, 10.45 m (34.3 ft) SE of the south corner of a two-story
frame house, 0.37 m (1.2 ft) north of the north corner of the fence around the
U.S. Corps of Engineers facility, 0.3 m (1 ft) NW of a witness post, and 9 cm
(0.3 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8728853 PUBLICATION DATE: 06/28/2011
Name: WHITE CITY, INTERCOASTAL WATER WAY, FL
FL
NOAA Chart: 11393 Latitude: 29° 52.8' N ( 29.88069)
USGS Quad: WHITE CITY Longitude: 85° 13.3' W ( -85.22144)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8853 C 1977 CLB
DESIGNATION: 872 8853 C TIDAL
MONUMENTATION: Bench Mark disk VM#: 9899
AGENCY: Florida Department of Natural Resources
(FLDNR) IDB PID#: AS0916
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 29° 53.0' N ( 29.88330) LONGITUDE: 85° 13.3' W ( -85.22170)
The bench mark is a disk located at the intersection of State Highway 71 and
Sealey Drive, 19.29 m (63.3 ft) NW of the centerline of the highway, 6 m (20 ft)
SW of the centerline of Sealey Drive, 1.92 m (6.3 ft) NE of a utility pole, and
0.49 m (1.6 ft) NE of a witness post. The bench mark is set 0.37 m (1.2 ft)
below the ground, 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 concrete kickblock.
BENCH MARK STAMPING: 8853 GIWW
DESIGNATION: 872 8853 GIWW
MONUMENTATION: Survey disk VM#: 18953
AGENCY: U.S. Department of Defense (DOD) IDB PID#:
SETTING CLASSIFICATION: Unspecified rod OPUS PID:
LATITUDE: 29° 52.8' N ( 29.88067) LONGITUDE: 85° 13.3' W ( -85.22131)
The benchmark is a disk located at the White City Park in a grassy area between
the boat ramps and in front of a covered wood deck and the water, 15.30 m (50.20
ft) NW of the center boat ramp, 14.71 M (48.26 ft) NNE of the western boat ramp,
1.95 m (6.40 ft) north of the south concrete seawall, being a disk crimped to
the end of a deep driven rod, mark is in a 4 inch PVC pipe that is flush with
the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8728853 PUBLICATION DATE: 06/28/2011
Name: WHITE CITY, INTERCOASTAL WATER WAY, FL
FL
NOAA Chart: 11393 Latitude: 29° 52.8' N ( 29.88069)
USGS Quad: WHITE CITY Longitude: 85° 13.3' W ( -85.22144)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8853 D 2008
DESIGNATION: 872 8853 D TIDAL
MONUMENTATION: Bench Mark disk VM#: 19084
AGENCY: National Ocean Survey/Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 29° 52.9' N ( 29.88100) LONGITUDE: 85° 13.2' W ( -85.22081)
The benchmark is a disk located at the White City Park in the SE corner of the
basketball court, 15.05 m (49.4 ft) S of the NE corner of the basketball court,
7.21 m (23.7 ft) E of light pole number 73558542, 0.90 m (3 ft) NW of the SE
corner of the basketball court, set flush in the concrete.
BENCH MARK STAMPING: 8853 C 2008
DESIGNATION: 872 8853 C
MONUMENTATION: Tidal Station disk VM#: 19727
AGENCY: National Ocean Survey/Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete Pad OPUS PID#: BBBS76
LATITUDE: 29° 52.8' N ( 29.88077) LONGITUDE: 85° 13.2' W ( -85.22080)
The bench mark is a disk set flush in the SW corner of the concrete foundation
for a transformer that is in the White City Park playground, 43.27 m (142.0 ft)
NNE of the center of a garage door for the Gulf County search and rescue
building, 8.10 m (26.6 ft) NE of the center of the road, 5.80 m (19.0 ft) NW of
the center of a double chain link gate, 2.76 m (9.1 ft) NW of the SE corner of
the concrete foundation and 0.30 m (0.98 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8728853 PUBLICATION DATE: 06/28/2011
Name: WHITE CITY, INTERCOASTAL WATER WAY, FL
FL
NOAA Chart: 11393 Latitude: 29° 52.8' N ( 29.88069)
USGS Quad: WHITE CITY Longitude: 85° 13.3' W ( -85.22144)
T I D A L D A T U M S
Tidal datums at WHITE CITY, INTERCOASTAL WATER WAY, FL based on:
LENGTH OF SERIES: 2 YEARS
TIME PERIOD: January 2009 - December 2010
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8728690 APALACHICOLA, APALACHICOLA RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (04/10/2009) = 1.116
MEAN HIGHER HIGH WATER MHHW = 0.308
MEAN HIGH WATER MHW = 0.288
MEAN SEA LEVEL MSL = 0.158
MEAN TIDE LEVEL MTL = 0.157
MEAN LOW WATER MLW = 0.026
North American Vertical Datum NAVD88 = 0.022
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/13/2011) = -0.566
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
8853 A 1977 CLB 2.166 1.878
8853 C 1977 CLB 2.483 2.195
8853 GIWW 1.204 0.916
8853 D 2008 1.437 1.149
8853 C 2008 1.514 1.226
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8728853 PUBLICATION DATE: 06/28/2011
Name: WHITE CITY, INTERCOASTAL WATER WAY, FL
FL
NOAA Chart: 11393 Latitude: 29° 52.8' N ( 29.88069)
USGS Quad: WHITE CITY Longitude: 85° 13.3' W ( -85.22144)
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.