U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
To reach the tidal bench marks from the intersection of Routes 528 west and 401
north in Canaveral, proceed north on Route 401 for 4.0 km (2.5 mi) to Poseidon
Road, turn right on Poseidon Road and continue to a stop sign, turn left and
then another right at the yield, then turn left at the sign for Trident Pier;
then left at the stop sign, and follow the road around to the south end of the
pier. The bench marks are located in the general vicinity of Trident Pier.
The tide gage is located at the south end of the pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 1604 A 1994
DESIGNATION: 872 1604 A
MONUMENTATION: Tidal Station disk VM#: 12678
AGENCY: National Ocean Service (NOS) PID#: DK6642
SETTING CLASSIFICATION: Stainless steel rod
The primary bench mark is a disk located east of Trident Pier, approximately 183
m (600 ft) NE of the gage house, 50.29 m (165.0 ft) south of the fire hydrant
which is located on the west side of the road leading to the south end of the
pier, 6.80 m (22.3 ft) west of the centerline of the road leading to the south
end of Trident Pier, and 2.01 m (6.6 ft) NE of SE corner of fence surrounding
two large steel tanks. The bench mark is crimped to a stainless steel rod
driven 8.5 m (28 ft) to refusal and encased in a 5-inch PVC pipe and concrete
kickblock and NOS logo cap.
BENCH MARK STAMPING: CH-70 1975 JAX-FLA
DESIGNATION: 872 1604 CH-70
MONUMENTATION: Survey disk VM#: 12679
AGENCY: US Army Corps of Engineers (USE) PID:
SETTING CLASSIFICATION: Concrete bulkhead
The bench mark is a disk set in the concrete bulkhead at the south end of the
Trident Pier, 23.20 m (76.1 ft) south of the centerline of the most southern
centerline of the pier, 10.61 m (34.8 ft) SW of the SE corner of the guard
building at the pier, and 11.00 m (36.1 ft) west of the SW corner of the
concrete foundation supporting the gage house.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: CCAFS-24 1989 JAX FLA
DESIGNATION: 872 1604 CCAFS-24
MONUMENTATION: Survey disk VM#: 12680
AGENCY: US Army Corps of Engineers (USE) PID:
SETTING CLASSIFICATION: Concrete monument
The bench mark is a disk set in a concrete monument at the south end of the
Trident Pier, 13.01 m (42.7 ft) north of the NE corner of concrete foundation
supporting the gage house, 7.71 m (25.3 ft) south of the centerline of the road
leading to south end of the pier, and 5.79 m (19.0 ft) NE of the NE corner of
the guard building at the south end of the pier.
BENCH MARK STAMPING: 1604 B 1994
DESIGNATION: 872 1604 B
MONUMENTATION: Tidal Station disk VM#: 12681
AGENCY: National Ocean Service (NOS) PID#: DK6641
SETTING CLASSIFICATION: Stainless steel rod
The bench mark is a disk set along the east side of the road leading to the
south end of the pier, 20.94 m (68.7 ft) north of the NW corner of a concrete
staging platform, 8.90 m (29.2 ft) east of the centerline of the road leading to
the south end of the pier, and 7.62 m (25.0 ft) NE of concrete light pole No.
T-54. The bench mark is 15 cm (0.5 ft) below ground level, crimped to a
stainless steel rod driven 8.5 m (28 ft) to refusal and encased in a 5-inch PVC
pipe and concrete kickblock with NOS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1604 C 1994
DESIGNATION: 872 1604 C
MONUMENTATION: Tidal Station disk VM#: 12682
AGENCY: National Ocean Service (NOS) PID#: AJ2449
SETTING CLASSIFICATION: Stainless steel rod
The bench mark is a disk on the east side of the road leading to the south end
of Trident Pier, 61.51 m (201.8 ft) south of most northerly light pole No. T-59
set along the side of the road leading to the pier, 10.00 m (32.8 ft) east of
the centerline of the road leading to the pier, and 3.32 m (10.9 ft) ESE of the
second light pole No. T-58 from the north on the east side of the road leading
to the pier. The bench mark is 15 cm (0.5 ft) below ground level, crimped to a
stainless steel rod driven 8.5 m (28 ft) to refusal and encased in a 5-inch PVC
pipe and concrete kickblock with NOS logo cap.
BENCH MARK STAMPING: CCAFS-23 1989 JAX FLA
DESIGNATION: 872 1604 CCAFS-23
MONUMENTATION: Survey disk VM#: 13927
AGENCY: US Army Corps of Engineers (USE) PID:
SETTING CLASSIFICATION: Concrete pier
The bench mark is a disk set flush in concrete on the SW corner of Trident Pier,
3.37 m (11.1 ft) NE of the SW corner of the pier, 1.50 m (4.9 ft) south of the
center of a double bollard, and 0.75 m (2.5 ft) west of the west track of a
travelling crane.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: CCAFS-22 1989 JAX FLA
DESIGNATION: 872 1604 CCAFS-22
MONUMENTATION: Survey disk VM#: 13928
AGENCY: US Army Corps of Engineers (USE) PID:
SETTING CLASSIFICATION: Concrete pier
The bench mark is a disk set flush in concrete on the NW end of Trident Pier,
2.86 m (9.4 ft) east of the NW corner of the pier, 2.65 m (8.7 ft) east of the
center of a double bollard, and 0.68 m (2.2 ft) west of the west track for a
travelling crane.
BENCH MARK STAMPING: CH-71 1975 JAX-FLA
DESIGNATION: 872 1604 CH-71
MONUMENTATION: Survey disk VM#: 13929
AGENCY: US Army Corps of Engineers (USE) PID:
SETTING CLASSIFICATION: Concrete wingwall
The bench mark is set flush in the concrete wingwall at the north end of Trident
Pier, 14.84 m (48.7 ft) west of the east end of the wingwall, 2.45 m (8.0 ft)
east of the center of a double bollard, and 0.60 m (2.0 ft) south of the north
side of the wingwall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
T I D A L D A T U M S
Tidal datums at TRIDENT PIER, PORT CANAVERAL based on:
LENGTH OF SERIES: 53 MONTHS
TIME PERIOD: November 1994 - November 1999
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8720587 ST. AUGUSTINE BEACH, ATLANTIC OCEAN
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (08/02/1995) = 1.891
MEAN HIGHER HIGH WATER MHHW = 1.219
MEAN HIGH WATER MHW = 1.115
MEAN SEA LEVEL MSL = 0.587
MEAN TIDE LEVEL MTL = 0.584
MEAN LOW WATER MLW = 0.052
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (02/08/2001) = -0.426
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
1604 A 1994 3.909 2.794
CH-70 1975 JAX-FLA 4.008 2.893
CCAFS-24 1989 JAX FLA 3.997 2.882
1604 B 1994 3.726 2.611
1604 C 1994 3.201 2.086
CCAFS-23 1989 JAX FLA 4.273 3.158
CCAFS-22 1989 JAX FLA 4.286 3.171
CH-71 1975 JAX-FLA 4.021 2.906
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
PUBLICATION DATE: 05/11/2001
Station ID: 8721604 SUPERCEDED DATE: 04/21/2003
Name: TRIDENT PIER, PORT CANAVERAL
FLORIDA
NOAA Chart: 11478 Latitude: 28° 24.9' N
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W
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 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.