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Datums Page Page 1 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
To reach the tidal bench marks in Cape Canaveral at the Cape Canaveral Air Force
Base and near the Trident Pier, 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 on the east side of the road leading to the
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 B 1994
DESIGNATION: 872 1604 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 12681
AGENCY: National Ocean Service (NOS) IDB PID#: DK6641
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DK6641
LATITUDE: 28° 25.1' N ( 28.41806) LONGITUDE: 80° 35.5' W ( -80.59231)
The primary bench mark is a disk located along the east side of the road leading
to the south end of the pier, 29.15 m (95.6 ft) south of a doubler valve water
main shut off, 20.94 m (68.7 ft) north of the NW corner of a concrete staging
platform, 8.90 m (29.20 f
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1604 A 1994
DESIGNATION: 872 1604 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 12678
AGENCY: National Ocean Service (NOS) IDB PID#: DK6642
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DK6642
LATITUDE: 28° 25.0' N ( 28.41672) LONGITUDE: 80° 35.5' W ( -80.59224)
The bench mark is a disk located east of Trident Pier, approximately 183 m
(600.4 ft) NE of the gage house, 50.29 m (164.99 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 (2
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: CH-70 1975 JAX-FLA
DESIGNATION: CH 70
ALIAS: 872 1604 CH 70
MONUMENTATION: Survey disk VM#: 12679
AGENCY: US Army Corps of Engineers (USE) IDB PID#:
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID#: DK6703
LATITUDE: 28° 24.9' N ( 28.41583) LONGITUDE: 80° 35.6' W ( -80.59333)
The bench mark is a disk set in the concrete bulkhead at the south end of the
Trident Pier, 23.20 m (76.12 ft) south of the centerline of the most southern
centerline of the pier, 10.61 m (34.81 ft) SW of the SE corner of the guard
building at the pier, and 11.00 m (36.09 ft) west of the SW corner of the
concrete foundation supporting the gage house.
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) IDB PID#:
SETTING CLASSIFICATION: Concrete pier OPUS PID#: BBFL23
LATITUDE: 28° 25.0' N ( 28.41592) LONGITUDE: 80° 35.6' W ( -80.59369)
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. Note - This mark is under a low roof shed and a short and
collapsable rod must be used to level to it. Sometimes this mark is covered by
sand bags as it is a secure point on the pier.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
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) IDB PID#:
SETTING CLASSIFICATION: Concrete wing wall OPUS PID#: BBFL22
LATITUDE: 28° 25.2' N ( 28.41936) LONGITUDE: 80° 35.6' W ( -80.59319)
The bench mark is a disk set 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 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: L 190 1959
DESIGNATION: L 190
MONUMENTATION: Bench Mark disk VM#: 15786
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK5013
SETTING CLASSIFICATION: Metal rod with base plate OPUS PID#: AK5013
LATITUDE: 28° 24.9' N ( 28.41550) LONGITUDE: 80° 36.1' W ( -80.60178)
The bench mark is a disk set 2.68 m (8.79 ft) SE of the NE fence corner, and 14
m (46 ft) west of the center of a paved road. The disk is attached to the top
of a 1/2 inch galvanized pipe driven 4.0 m (13 ft) into the ground, surrounded
by a 6 inch terra-cotta pipe 1 m (3 ft) long with a wooden cap attached.
BENCH MARK STAMPING: 1604 D 2003
DESIGNATION: 872 1604 D
MONUMENTATION: Tidal Station disk VM#: 17340
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Retaining wall OPUS PID#: BBFL21
LATITUDE: 28° 25.3' N ( 28.42089) LONGITUDE: 80° 35.5' W ( -80.59194)
The bench mark is a disk set in a concrete culvert wall on the south side of the
road leading to the Trident Pier, 43.55 m (142.8 ft) east of the intersection of
the north/south road leading to the pier, 10.65 m (34.9 ft) south of the
centerline of the road leading past the Trident pier, 4.30 m (14.1 ft) west of
the east end of the culvert wall, and 1 m (3 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: G2 1980
DESIGNATION: G2
MONUMENTATION: Survey disk VM#: 22227
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete culvert OPUS PID:
LATITUDE: 28° 25.2' N ( 28.42031) LONGITUDE: 80° 35.4' W ( -80.59042)
The bench mark is a disc set on top of a concrete culvert at the Cape Canaveral
air force base, 45.19 m (148.3 ft) NE of a fire hydrant, 13 m (42.7 ft) south of
light pole T35, 8.17 m (26.8 ft) east of the centerline of hound dog circle, 6.8
m (22.3 ft) west of a fence line, 6.8 m (22.3 ft) west of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: F2 1980
DESIGNATION: F2
MONUMENTATION: Survey disk VM#: 22228
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 25.2' N ( 28.41922) LONGITUDE: 80° 35.4' W ( -80.59036)
The bench mark is a disc set on top of a concrete monument at the Cape Canaveral
air force base, 50.5 m (165.7 ft) east of the centerline of gate leading to
bunker number 2, 11.8 m (38.7 ft) SE of a light pole number LP2CKT8, 1.15 m (3.8
ft) west of a chain link fence, 1.15 m (3.8 ft) west of a witness post.
BENCH MARK STAMPING: 1604 E 2017
DESIGNATION: 872 1604 E
MONUMENTATION: Survey disk VM#: 22229
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete culvert OPUS PID:
LATITUDE: 28° 25.0' N ( 28.41592) LONGITUDE: 80° 35.5' W ( -80.59197)
The bench mark is a disc set on top of a concrete culvert located at the Cape
Canaveral air force base, 24.45 m (80.2 ft) west of an aluminum light pole,
14.95 m (49.0 ft) north of a chain link fence running east to west, 10.0 m (32.8
ft) south of the centerline of Trident pier access road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
T I D A L D A T U M S
Tidal datums at TRIDENT PIER, PORT CANAVERAL based on:
LENGTH OF SERIES: 19 YEARS
TIME PERIOD: 1/97-12/06, 9/07-8/11, 2/13-1/18
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8720030 FERNANDINA BEACH, AMELIA RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (09/26/2004) = 2.408
MEAN HIGHER HIGH WATER MHHW = 1.196
MEAN HIGH WATER MHW = 1.089
North American Vertical Datum NAVD88 = 0.860
MEAN SEA LEVEL MSL = 0.572
MEAN TIDE LEVEL MTL = 0.570
MEAN LOW WATER MLW = 0.051
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/12/2009) = -0.576
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
1604 B 1994 3.634 2.545
1604 A 1994 3.816 2.727
CH-70 1975 JAX-FLA 3.918 2.829
CCAFS-23 1989 JAX FLA 4.192 3.103
CH-71 1975 JAX-FLA 3.933 2.844
L 190 1959 4.785 3.696
1604 D 2003 3.599 2.510
G2 1980 3.812 2.723
F2 1980 3.643 2.554
1604 E 2017 4.416 3.327
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 9 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
Foot Notes:
Benchmarks F2 1980 and G2 1980 are based on one differential leveling connection
and do not meet the quality standards for NOS. Therefore, caution should be
used when deriving elevations for these marks.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 10 of 10
Station ID: 8721604 PUBLICATION DATE: 09/19/2018
Name: TRIDENT PIER, PORT CANAVERAL
FL
NOAA Chart: 11478 Latitude: 28° 24.9' N ( 28.41583)
USGS Quad: CAPE CANAVERAL Longitude: 80° 35.6' W ( -80.59306)
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.