U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
To reach the tidal bench marks from the intersection of State Road 518 and U.S.
Highway 1 in Eau Gallie, proceed 5.0 km (3.1 mi) east on State Road 518 to the
intersection of State Highway A1A. The bench marks are in the vicinity of the
intersection of State Highway A1A and State Road 518. The tide gage and staff
were located on Canova Pier south of the extension of State Road 518.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 4 1970
DESIGNATION: 872 1804 TIDAL 4
MONUMENTATION: Tidal Station disk VM#: 5374
AGENCY: National Geodetic Survey (NGS) IDB PID#: AK3003
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 8.2' N ( 28.13722) LONGITUDE: 80° 34.9' W ( -80.58111)
The primary bench mark is a disk set in the top of a concrete post projecting 3
inches above the level of the ground, 12.65 m (41.5 ft) west of the centerline
of the southbound lane of State Highway A1A, 0.55 m (1.8 ft) south of a power
line pole with a guy wire and supporing a transformer, 0.55 m (1.8 ft) north of
a metal witness post, and about level with the highway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: X 229 1965
DESIGNATION: X 229
MONUMENTATION: Bench Mark disk VM#: 5370
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK2998
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID#: AK2998
LATITUDE: 28° 8.3' N ( 28.13861) LONGITUDE: 80° 34.9' W ( -80.58139)
The bench mark is a disk located 4.24 m (13.9 ft) north of the north curb of
State Highway 518, 5.85 m (19.2 ft) west of the west curb of State Highway A1A,
0.79 m (2.6 ft) east of the east face of a large concrete light pole, 0.15 m
(0.5 ft) north of a metal witness post, and about level with State Highway A1A.
The bench mark is set 0.1 m (0.2 ft) below ground level, crimped to the top of a
copper-clad steel rod driven to refusal at a depth of 19.51 m (64.0 ft), and
encased in a metal pipe and a concrete kickblock.
BENCH MARK STAMPING: NO 3 1970
DESIGNATION: 872 1804 TIDAL 3
MONUMENTATION: Tidal Station disk VM#: 5373
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK2995
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 8.4' N ( 28.13944) LONGITUDE: 80° 34.8' W ( -80.58083)
The bench mark is a disk set in the top of a concrete post projecting 2 inches
above the level of the ground, 67.36 m (221.0 ft) east of the centerline of the
northbound lane of State Highway A1A, 8.08 m (26.5 ft) south of the centerline
of an east-west gravel road which leads from the highway to the ocean, 30.48 m
(100.0 ft) west of the sand bank of the ocean shore line, 0.61 m (2.0 ft) west
of a metal witness post, 0.46 m (1.5 ft) east of a power line pole with two guy
wires, and 0.3 m (1.0 ft) above the level of the gravel road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1804 F 1986
DESIGNATION: 872 1804 F TIDAL
MONUMENTATION: Tidal Station disk VM#: 7458
AGENCY: FL Department of Environmental Resources
(FLDNR) IDB PID#: AK6987
SETTING CLASSIFICATION: Storm water drain OPUS PID:
LATITUDE: 28° 8.5' N ( 28.14250) LONGITUDE: 80° 34.9' W ( -80.58250)
The bench mark is a disk set in the SW corner of a 1.07 m x 1.37 m (3.5 ft x 4.5
ft) concrete box drain, 8.99 m (29.5 ft) north of the centerline of the north
driveway for the Atlantis Professional Center, 13.32 m (43.7 ft) west of the
centerline of State Highway A1A southbound, 11.64 m (38.2 ft) south of the
centerline of the driveway to the SW corner of the box drain, and 0.61 m (2.0
ft) below the level of the highway.
BENCH MARK STAMPING: 1804 G 2005
DESIGNATION: 872 1804 G TIDAL
MONUMENTATION: Tidal Station disk VM#: 19346
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DK6600
SETTING CLASSIFICATION: Storm water drain OPUS PID:
LATITUDE: 28° 8.5' N ( 28.14250) LONGITUDE: 80° 34.9' W ( -80.58222)
The bench mark is a disk set flush in the top of the NW corner of a 1.68 m by
1.22 m (5.5 ft by 4.0 ft) concrete storm water drain box and level with the
surface of State Road A1A, 37.58 m (123.3 ft) SE of bench mark 1804 F 1986,
20.88 m (68.5 ft) south of the approximate centerline of the entrance drive into
the Jacqueline R. Burns Millennium Park of Indian Harbor Beach, 17.83 m (58.5
ft) east of the approximate centerline of State Road A1A, and 4.72 m (15.5 ft)
north of the approximate centerline of the entrance drive to the Gardenia
Condominiums (2195 State Road A1A).
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 1804 H 2005
DESIGNATION: 872 1804 H TIDAL
MONUMENTATION: Flange-encased Rod VM#: 19347
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#: DK6599
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 28° 8.3' N ( 28.13889) LONGITUDE: 80° 34.8' W ( -80.58083)
The bench mark is a flange-encased rod located 16.64 m (54.6 ft) east of the
approximate centerline of the northbound lanes of State Road A1A, 15.00 m (49.2
ft) north of the approximate centerline of the exit road of Canova Beach Park,
5.91 m (19.4 ft) NE of a square concrete power pole with a transformer and four
guy wires surrounded by four cabbage palms, 4.72 m (15.5 ft) SE of a square
concrete pole with a pedestrian crossing sign with an activation button, 1.62 m
(5.3 ft) east of the east edge of an eight foot concrete sidewalk, 0.30 m (1.0
ft) SW of an information sign and 0.30 m (1.0 ft) west of a carsonite witness
post. The datum point is recessed 0.06 m (0.2 ft) below the level of the NGS
logo cap, being the top of a stainless steel rod, driven to refusal at a depth
of 24.4 m (80.1 ft), and encased in a 5-inch NGS logo cap flush with the ground.
A magnet was places inside of the NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: J 625 2005
DESIGNATION: J 625
MONUMENTATION: Bench Mark disk VM#: 19449
AGENCY: FL Department of Environmental
Protection (FLDEP) IDB PID#:
SETTING CLASSIFICATION: Storm water drain OPUS PID:
LATITUDE: 28° 7.4' N ( 28.12333) LONGITUDE: 80° 34.6' W ( -80.57722)
The bench mark is a disk set flush in the top of the SE corner of a 1.68 m by
1.31 m (5.5 ft by 4.3 ft) concrete storm water drain box and 0.91 m (3.0 ft)
below the level of State Road A1, 107.29 m (352.0 ft) south of the approximate
centerline of Ocean View Lane, 83.82 m (275.0 ft) north of the approximate
centerline of Paradise Boulevard, 24.99 m (82.0 ft) south of the approximate
centerline of the northernmost entrance of the shopping center, 17.77 m (58.3
ft) west of the approximate centerline of State Road A1A, 16.52 m (54.2 ft)
north of the approximate centerline of the southernmost entrance of the shopping
center, 6.80 m (22.3 ft) NW of a wooden power pole with a transformer, street
light, and one guy wire, 4.69 m (15.4 ft) west of the east edge of a 1.52 m (5.0
ft) sidewalk, and 3.05 m (10.0 ft) east of the back of the curb of the shopping
center parking area.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
T I D A L D A T U M S
Tidal datums at CANOVA based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: June 1970 - August 1970
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:
MEAN HIGHER HIGH WATER MHHW = 1.214
MEAN HIGH WATER MHW = 1.087
North American Vertical Datum NAVD88 = 0.895
MEAN SEA LEVEL MSL = 0.580
MEAN TIDE LEVEL MTL = 0.575
MEAN LOW WATER MLW = 0.062
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 4 1970 5.176 4.090
X 229 1965 4.813 3.726
NO 3 1970 5.002 3.915
1804 F 1986 4.747 3.660
1804 G 2005 5.297 4.210
1804 H 2005 4.672 3.585
J 625 2005 4.816 3.729
Foot Notes:
Geodetic heights of the bench marks meet all NOAA/NOS/NGS quality control
standards for Second Order, Class 1 leveling. It is advised that a confirmation
set of levels be established for bench mark J 625 2005 to verify height
differences before using tidal bench mark elevation information.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8721804 PUBLICATION DATE: 01/04/2010
Name: CANOVA
FL
NOAA Chart: Latitude: 28° 8.3' N ( 28.13830)
USGS Quad: Longitude: 80° 34.7' W ( -80.57830)
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.