U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
To reach the tidal bench marks from the intersection of State Highway Alternate
A1A (Las Olas Boulevard) and State Highway A1A (Seabreeze Boulevard) in SE Fort
Lauderdale, proceed south on State Highway A1A for 0.72 km (0.45 mi) to the Fort
Lauderdale South Beach Park parking lot across State Highway AIA (Seabreeze
Boulevard) from the Bahia Mar Yacht Club. The bench marks are located
throughout the Yacht Club property and the park. The tide gage and staff were
located on a pier at the south side of the North Yacht Basin.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1960
DESIGNATION: 872 2939 TIDAL 1
MONUMENTATION: Tidal Station disk VM#: 5695
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD2457
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11330) LONGITUDE: 80° 6.5' W ( -80.10830)
The primary bench mark is a disk set flush in the top of a 0.46 m (1.5 ft) wide
concrete sea wall west of the Bahia Mar Yacht Club and south of the northern
boat basin, 43.43 m (142.5 ft) south of the NW corner of the seawall, 42.67 m
(140.0 ft) south of the NW corner of the parking lot and the south end of the
western most finger pier in the north yacht basin, 5.18 m (17.0 ft) west of the
eastern edge of the paved parking lot, 1.31 m (4.3 ft) SE of an electric panel
box, and 0.70 m (2.3 ft) SSW of the northernmost light post along the waterway.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 4 1967
DESIGNATION: 872 2939 TIDAL 4
MONUMENTATION: Survey disk VM#: 5696
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AD2458
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11330) LONGITUDE: 80° 6.5' W ( -80.10830)
NOTE: A relatively new seawall is in place in the described location. It
appears that the old seawall and the bench mark have been destroyed.
BENCH MARK STAMPING: 2939 G 1981
DESIGNATION: 872 2939 G TIDAL
MONUMENTATION: Tidal Station disk VM#: 5697
AGENCY: National Ocean Survey (NOS) IDB PID#: AD5870
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11330) LONGITUDE: 80° 6.5' W ( -80.10830)
The bench mark is a disk, located a grass island in the parking lot of the Fort
Lauderdale South Beach Park, 21 m (69 ft) east of the centerline of the
northbound lane of State Road A1A, 1.1 m (3.5 ft) SSW of a royal palm tree. The
mark is set 0.1 m (0.3 ft) below ground, crimped to a stainless steel rod driven
12.2 m (40 ft) to refusal, in a sleeve. NOTE: This bench mark may be intact as
the general location of the mark has not been disturbed; however, the highway
has been widened, and the parking lot toll booth has been moved. The mark was
not found between 1990 and 1997.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2939 H 1981
DESIGNATION: 872 2939 H TIDAL
MONUMENTATION: Survey disk VM#: 5698
AGENCY: National Ocean Survey (NOS) IDB PID#: AD5871
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11330) LONGITUDE: 80° 6.5' W ( -80.10830)
NOTE: The general location of this mark has been totally changed due to a new
widened entrance to the park. It appears that the marks location is now under
the paved entrance to the Fort Lauderdale South Beach Park and can be considered
destroyed.
BENCH MARK STAMPING: 2939 K 1986
DESIGNATION: 872 2939 K TIDAL
MONUMENTATION: Tidal Station disk VM#: 12532
AGENCY: National Ocean Service (NOS) IDB PID#: AD8080
SETTING CLASSIFICATION: Concrete box drain OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11333) LONGITUDE: 80° 6.3' W ( -80.10500)
The bench mark is a disk set in the NE corner of a concrete box drain located in
the parking lot of the Fort Lauderdale South Beach Park, 72.1 m (236.5 ft) north
(along the west curb of the parking lot) of the north edge of the pedestrian
bridge over State Highway A1A, 7.38 m (24.2 ft) east of the centerline of the
northbound lane of State Highway A1A, 7.92 m (26.0 ft) west of the centerline of
the northbound lane of the parking lot, and 22.37 m (73.4 ft) south of a
concrete power pole with three transformers.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2939 A 1994
DESIGNATION: 872 2939 A
MONUMENTATION: Tidal Station disk VM#: 12533
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11333) LONGITUDE: 80° 6.4' W ( -80.10667)
The bench mark is a disk set in the top of the concrete seawall at the SE corner
of the boat basin north of the Bahia Mar Yacht Club building, approximately 113
m (371 ft) NNW of the pedestrian bridge over State Highway A1A, 56.91 m (186.7
ft) north of the north wall of the Bahia Mar Yacht Club building, 45.87 m (150.5
ft) west of the west curb of the south bound lane of State Highway A1A, 3.75 m
(12.3 ft) NNE of a wooden light pole, 3 m (10 ft) north of the intersection of a
north-south seawall and an east-west seawall, 1.52 m (5.0 ft) NW of he west wall
of the Flamingo Fishing Charters office and 0.91 m (3.0 ft) NW of the
southernmost black metal light pole along the north-south seawall.
BENCH MARK STAMPING: 2939 B 1994
DESIGNATION: 872 2939 B
MONUMENTATION: Tidal Station disk VM#: 12534
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete bridge piling OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11333) LONGITUDE: 80° 6.3' W ( -80.10500)
The bench mark is a disk set vertically in the southern face of the
southeasternmost piling supporting a pedestrian bridge over State Highway A1A at
the Fort Lauderdale South Beach Park, 30.94 m (101.5 ft) west of the east end of
the bridge, 16.40 m (53.8 ft) eastof the east curb of the northbound lane of
State Highway A1A, 14.33 m (47.0 ft) NNE of a concrete power pole in the grass
median in the center of the parking lot and 0.64 m (2.1 ft) above the level of
the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: R 79 1992
DESIGNATION: 872 2939 R 79
MONUMENTATION: Tidal Station disk VM#: 12535
AGENCY: Florida Department of Natural Resoures
(FLDNR) IDB PID#:
SETTING CLASSIFICATION: Concrete curb OPUS PID:
LATITUDE: 26° 6.8' N ( 26.11330) LONGITUDE: 80° 6.5' W ( -80.10830)
The bench mark is a disk set in the easternmost curb of the parking lot of the
Fort Lauderdale South Beach Park and is part of the monumentation for the States
coastal construction set back line, 77.42 m (254.0 ft) north, along the curb of
the north wall of the southern rest room building, 51.51 m (169.0 ft) south,
along the curb of the south wall of the northernmost rest room and 2.16 m (7.1
ft) west of the east edge of a 0.61 m (2.0 ft) high concrete block wall that
runs along the sest edge of the beach.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
T I D A L D A T U M S
Tidal datums at FT. LAUDERDALE BAHIA YACHT CLUB based on:
LENGTH OF SERIES: 1 YEAR
TIME PERIOD: May 1970 - April 1971
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:
HIGHEST OBSERVED WATER LEVEL (10/14/1970) = 1.138
MEAN HIGHER HIGH WATER MHHW = 0.808
MEAN HIGH WATER MHW = 0.773
North American Vertical Datum NAVD88 = 0.697
MEAN SEA LEVEL MSL = 0.411
MEAN TIDE LEVEL MTL = 0.411
MEAN LOW WATER MLW = 0.049
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (04/26/1971) = -0.340
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 1 1960 1.734 0.961
NO 4 1967 1.600 0.827
2939 G 1981 4.363 3.590
2939 H 1981 4.213 3.440
2939 K 1986 3.112 2.339
2939 A 1994 1.737 0.964
2939 B 1994 4.377 3.604
R 79 1992 4.819 4.046
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8722939 PUBLICATION DATE: 03/22/2005
Name: FT. LAUDERDALE BAHIA YACHT CLUB
FL
NOAA Chart: 11470 Latitude: 26° 6.8' N ( 26.11330)
USGS Quad: PORT EVERGLADES Longitude: 80° 6.5' W ( -80.10830)
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.