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Bench Mark Sheet for 8722957, NORTH DANIA SOUND FL

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


To reach the tidal bench marks from the intersection of U.S. Highway 1 and State
Highway A1A (East Dania Beach Boulevard) in Dania, proceed east on State Highway
A1A for 3.22 km (2.0 mi) to North Ocean Drive, which leads north to John U.
Lloyd State Recreation Area, then turn left and proceed north on North Ocean
Drive for 3.08 km (1.9 mi) to a bridge over North Dania Sound.  The bench marks
are located on the bridge.  The tide gage and staff were located on the SE
bridge fender.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  NO 1 1973
                         DESIGNATION:          872 2957 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:         5708
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AD5883
SETTING CLASSIFICATION:  Concrete Bulkhead                     OPUS PID:        
LATITUDE:   26°  4.9' N (  26.08167)          LONGITUDE:  80°  6.7' W ( -80.11167)


The primary bench mark is a disk set in the bulkhead below the south end of the
bridge on the west side of the road, 11.06 m (36.3 ft) south of a 45 degree
corner in the bulkhead, 0.58 m (1.9 ft) north of the SW end of the bulkhead, and
1.83 m (6.0 ft) below road level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  NO 2 1973
                         DESIGNATION:          872 2957 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:         5709
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AD5884
SETTING CLASSIFICATION:  Concrete bulkhead                     OPUS PID:        
LATITUDE:   26°  4.9' N (  26.08167)          LONGITUDE:  80°  6.7' W ( -80.11167)


The bench mark is a disk set in the south bulkhead under the bridge, 11.89 m
(39.0 ft) east of a 45 degree corner in the bulkhead, 11.09 m (36.4 ft) west of
another 45 degree corner, and 3.66 m (12.0 ft) below road level.  NOTE: 
Stamping is nearly unreadable: see photo.



                         BENCH MARK STAMPING:  NO 3 1973
                         DESIGNATION:          872 2957 TIDAL 3

MONUMENTATION:           Tidal Station disk                    VM#:         5710
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AD5885
SETTING CLASSIFICATION:  Concrete Bulkhead                     OPUS PID:        
LATITUDE:   26°  4.9' N (  26.08167)          LONGITUDE:  80°  6.7' W ( -80.11167)


The bench mark is a disk set in the concrete bulkhead, in the south bulkhead on
the east side of the road, 11.16 m (36.6 ft) south of a 45 degree corner in the
bulkhead, 0.30 m (1.0 ft) north of the SE end of the bulkhead, and 1.83 m (6.0
ft) below road level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  19.19
                         DESIGNATION:          19.19

MONUMENTATION:           Survey disk                           VM#:         5711
AGENCY:                  Florida State Road Department (FLSRD) IDB PID#:  AD2439
SETTING CLASSIFICATION:  Concrete Bridge Bannister             OPUS PID:        
LATITUDE:   26°  4.9' N (  26.08167)          LONGITUDE:  80°  6.7' W ( -80.11167)


The bench mark is a disk set in the top of the banister of the bridge on the
north end of the west banister of the bridge, 4.75 m (15.6 ft) west of the
centerline of the road, 1.40 m (4.6 ft) south of the north end of the banister,
and 0.91 m (3.0 ft) above road level.



                         BENCH MARK STAMPING:  19.65
                         DESIGNATION:          19.65

MONUMENTATION:           Tidal Station disk                    VM#:         5712
AGENCY:                  Florida State Road Department (FLSRD) IDB PID#:  AD2438
SETTING CLASSIFICATION:  Concrete Bridge Bannister             OPUS PID:        
LATITUDE:   26°  4.9' N (  26.08167)          LONGITUDE:  80°  6.7' W ( -80.11167)


The bench mark is a disk set in the top of the banister of the bridge on the
south end of the east banister of the bridge, 6.10 m (20.0 ft) east of the
centerline of the road, 1.40 m (4.6 ft) north of the south end of the banister,
and 0.91 m (3.0 ft) above road level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  25.71
                         DESIGNATION:          25.71

MONUMENTATION:           Bench Mark disk                       VM#:        19067
AGENCY:                  Florida State Road Department (FLSRD) IDB PID#:  AD2436
SETTING CLASSIFICATION:  Concrete Bridge Bannister             OPUS PID:        
LATITUDE:   26°  3.3' N (  26.05500)          LONGITUDE:  80°  6.9' W ( -80.11500)


The bench mark is a disk set on the top of the west banister of a bridge over
New River Sound, 4.85 m (15.9 ft) west of the center line of the road, 1.62 m
(5.3 ft) south of the north end of the banister, and 0.91 m (3.0 ft) above the
level of the road. 

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  X 625 2007
                         DESIGNATION:          X 625

MONUMENTATION:           Flange-encased Rod                    VM#:        19068
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod in sleeve         OPUS PID:        
LATITUDE:   26°  4.0' N (  26.06667)          LONGITUDE:  80°  6.8' W ( -80.11333)


The bench mark is a flange encased rod located 42.50 m (139.4 ft) east of the
centerline of North Ocean Drive, 3.66 km (12.0 ft) south of the extended
centerline of the south entrance drive of parking lot 1, 0.91 km (3.0 ft) SE of
the SE corner of the parking lot, and 1.22 m (4.0 ft) west of a carsonite
witness post.  The datum point is accessed through a 5-inch NGS logo cap flush
with the ground and about 0.09 m (0.3 ft) below the level of the parking area,
recessed 0.09 m (0.3 ft) below the level of the NGS logo cap containing a
magnet, being the top of a stainless steel rod in a sleeve, driven to refusal at
a depth of 8.23 m (27.0 ft).

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                            T I D A L   D A T U M S 


Tidal datums at NORTH DANIA SOUND based on:

     LENGTH OF SERIES:      1 MONTH
     TIME PERIOD:           August 1973 - August 1973
     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   =  0.842
     MEAN HIGH WATER                            MHW    =  0.806
     North American Vertical Datum              NAVD88 =  0.694
     MEAN SEA LEVEL                             MSL    =  0.430
     MEAN TIDE LEVEL                            MTL    =  0.429
     MEAN LOW WATER                             MLW    =  0.053
     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 1 1973                                   1.363    0.557
     NO 2 1973                                   1.331    0.525
     NO 3 1973                                   1.341    0.535
     19.19                                       5.981    5.175
     19.65                                       6.124    5.318
     25.71                                       7.972    7.166
     X 625 2007                                  1.216    0.410


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 marks 25.71 and X 625 2007 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: 8722957                         PUBLICATION DATE:  12/08/2010
Name:       NORTH DANIA SOUND                                 
            FL
NOAA Chart: 11466                           Latitude:   26°  4.8' N (  26.08000)
USGS Quad:  PORT EVERGLADES                 Longitude:  80°  6.7' W ( -80.11170)


                             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.

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Products available at 8722957 NORTH DANIA SOUND, FL

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services