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National Ocean Service
Datums Page Page 1 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
To reach the tidal bench marks from intersection of Azelia Court Road and U.S.
98 / U.S. 319 Highway, which is the entrance to Lanark Village, proceed easterly
along U.S. Highway 98 for 9.2 km (5.7 mi) to the entrance to the Florida State
University Oceanographic Laboratory. The bench marks are on the Oceanographic
Laboratory grounds. The tide gage and staff are on the end of the Oceanographic
Laboratory pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1969
DESIGNATION: 872 8360 TIDAL 1
MONUMENTATION: Tidal Station disk VM#: 762
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AS0359
SETTING CLASSIFICATION: Concrete pad OPUS PID#: AS0359
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The primary bench mark is a disk set flush in the south corner of an 5 m x 5 m
(18 ft x20 ft) concrete pad, bearing 0.3 m (1 ft) north of the south end of
poured bulkhead, 10.82 m (35.5 ft) north of saltwater pump house which is also
tide house, and 16.73 (54.9 ft) south of the southern-most lamp post on the
dock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 2 1969
DESIGNATION: 872 8360 TIDAL 2
MONUMENTATION: Tidal Station disk VM#: 763
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AS0358
SETTING CLASSIFICATION: Concrete apron OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk set flush in a concrete apron, bearing 0.58 m (1.9 ft)
ESE of the southern-most column of the laboratory building, 3.38 m (11.1 ft)
north of the NW leg of a tank platform, and 23.32 m (76.5 ft) south of the SW
corner of the shop building.
BENCH MARK STAMPING: NO 3 1969
DESIGNATION: 872 8360 TIDAL 3
MONUMENTATION: Tidal Station disk VM#: 764
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AS0355
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk set flush in the NW corner of the concrete bulkhead,
bearing 4.08 m (13.4 ft) north of the gasoline pumps, 15.82 m (51.9 ft) SW of NE
end of the bulkhead, 1.22 m (4 ft) NW of the small boat hoist, and 19.63 m (64.4
ft) west of the NW corner of the shop building.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8360 J 1976
DESIGNATION: 872 8360 J TIDAL
MONUMENTATION: Tidal Station disk VM#: 765
AGENCY: National Ocean Survey (NOS) IDB PID#: AS0357
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk set flush in the concrete foundation, bearing 0.3 m (1
ft) north of the north wall of the laboratory building, 7.80 m (25.6 ft) south
of the sidewalk, and 20.09 m (65.9 ft) east of the NW corner of the laboratory
building.
BENCH MARK STAMPING: 8360 K 1976
DESIGNATION: 872 8360 K TIDAL
MONUMENTATION: Tidal Station disk VM#: 766
AGENCY: National Ocean Survey (NOS) IDB PID#: AS0957
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk set flush in a concrete post, 14.14 m (46.4 ft) ENE of
the NE corner of the maintenance building, 7.92 m (26.0 ft) south of the
centerline of the north drive of the laboratory, 2.13 m (7.0 ft) west of a storm
drain, and 1.52 m (5.0 ft) south of a small cabbage palm.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8360 L 1991
DESIGNATION: 872 8360 L
MONUMENTATION: Tidal Station disk VM#: 12554
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 29° 54.9' N ( 29.91500) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk crimped to a stainless steel rod along the east side of
the entrance driveway to the FSU Marine Lab, 112 m (367 ft) east of the east end
of the US Highway 98 bridge over Alligator Creek, 27 m (87 ft) north of the NW
corner of Bldg. #411, 14.84 m (48.7 ft) south of the centerline of Highway 98,
8.69 m (28.5 ft) north of power pole 5-8926, and 6.95 m (22.8 ft) east of the
centerline of the driveway. The bench mark is set 0.03 m (0.1 ft) below ground
level, crimped to a stainless steel rod driven 39 feet (12 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.
BENCH MARK STAMPING: 8360 N 1991
DESIGNATION: 872 8360 N
MONUMENTATION: Tidal Station disk VM#: 12556
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk located 191 m (626 ft) east of the east end of the US
Highway 98 bridge over Alligator Creek, 86 m (283 ft) NE of the centerline
intersection of US Highway 98 and the entrance road to the FSU Marine Lab, 56 m
(183 ft) WSW of guy pole No. 5-28928, and 5.79 m (19.0 ft) north of the
centerline of the highway. The bench mark is set 0.06 m (0.2 ft) below ground
level, crimped to a stainless steel rod driven 45 feet (14 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8360 P 1991
DESIGNATION: 872 8360 P
MONUMENTATION: Tidal Station disk VM#: 12557
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 29° 55.0' N ( 29.91670) LONGITUDE: 84° 30.7' W ( -84.51170)
The bench mark is a disk locaed 270 m (886 ft) east of the east end of the US
Highway 98 bridge over Alligator Creek, 56 m (182 ft) WNW of power pole No.
58X540R, 22 m (73 ft) ENE of power pole No. N416, and 6 m (21 ft) south of the
centerline of US Highway 98. The bench mark is set 0.06 m (0.2 ft) below ground
level, crimped to a stainless steel rod driven 46 feet (14 m) to refusal, and
encased in a 4-inch PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
T I D A L D A T U M S
Tidal datums at TURKEY POINT based on:
LENGTH OF SERIES: 6 Years
TIME PERIOD: October 1989 - September 1995
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8727520 CEDAR KEY, GULF OF MEXICO
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (11/21/1985) = 2.677
MEAN HIGHER HIGH WATER MHHW = 0.834
MEAN HIGH WATER MHW = 0.770
North American Vertical Datum NAVD88 = 0.506
MEAN TIDE LEVEL MTL = 0.477
MEAN SEA LEVEL MSL = 0.463
MEAN LOW WATER MLW = 0.185
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/19/1977) = -1.145
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 1 1969 2.354 1.584
NO 2 1969 3.110 2.340
NO 3 1969 2.561 1.791
8360 J 1976 4.217 3.447
8360 K 1976 3.492 2.722
8360 L 1991 4.101 3.331
8360 N 1991 5.000 4.230
8360 P 1991 5.245 4.475
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8728360 PUBLICATION DATE: 04/21/2003
Name: TURKEY POINT
FL
NOAA Chart: 11405 Latitude: 29° 54.9' N ( 29.91500)
USGS Quad: MCINTYRE Longitude: 84° 30.7' W ( -84.51170)
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.
Station Location
Published bench mark
Unpublished bench mark
