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Bench Mark Sheet for 8720651, Crescent Beach, Matanzas River 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


To reach the tidal bench marks from the intersection of State Road A1A and
County Road 206 in Crescent Beach, proceed south on State Road A1A for 0.48 km
(0.30 mi) to the intersection of Green Street, turn right and continue west on
Green Street for 0.24 km (0.15 mi) to the end of Green Street and a boat ramp. 
By boat, go north along the Intercoastal Waterway (Matansas River) for about
0.24 km (0.15 mi) to the Aqua Trak on the right attached to the south end of the
east channel fender, extending about 3.05 m (10.0 ft) above the level of the
water.  The bench marks are located in the vicinity of the east end of the
bridge over the Matanzas River.  The tide gage was located at the south end of
the east channel fender under the bridge.


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


                 PRIMARY BENCH MARK STAMPING:  0651 B 1996
                         DESIGNATION:          872 0651 B TIDAL

MONUMENTATION:           Flange-encased Rod                    VM#:        15880
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID#: BBFG17
LATITUDE:   29° 46.1' N (  29.76833)          LONGITUDE:  81° 15.4' W ( -81.25722)


The primary bench mark is a flange-encased rod located 60.96 m (200.0 ft) east
of 872 0651 C 1996, 12.65 m (41.5 ft) NW of the NW corner of a swimming pool,
4.57 m (15.0 ft) east of the west bank of the Intercoastal Waterway (Mantanzas
River), 1.22m (4.0 ft) NE of the west end of a brick fence and 0.30 m (1.0 ft)
east of a carsonite witness post.  The datum point is set at ground level, being
the top of a stainless steel rod driven 24.38 m (80.0 ft) to refusal, and
encased in a 5-inch NOS logo cap flush with the ground.  

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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


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


                         BENCH MARK STAMPING:  0651 A 1996
                         DESIGNATION:          872 0651 A TIDAL

MONUMENTATION:           Bench Mark disk                       VM#:        15879
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete piling cap                   OPUS PID:        
LATITUDE:   29° 46.1' N (  29.76833)          LONGITUDE:  81° 15.5' W ( -81.25806)


The bench mark is a disk set flush in the top the SW piling cap on the east side
of the bridge over the Intercoastal Waterway (Matanzas River), 67.06 m (220.0
ft) NE of 0651 B 1996, about 35.05 m (115.0 ft) north of 872 0651 AQUA TRAK, and
3.66 m (12.0 ft) south of the centerline of the bridge.



                         BENCH MARK STAMPING:  0651 C 1996
                         DESIGNATION:          872 0651 C TIDAL

MONUMENTATION:           Bench Mark disk                       VM#:        15881
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   29° 46.1' N (  29.76889)          LONGITUDE:  81° 15.4' W ( -81.25667)


The bench mark is a disk set in the top of a round concrete monument flush with
the ground and level with the road, 106.68 m (350.0 ft) east of 0651 A 1996,
8.47 m (27.8 ft) south of the centerline of Coastal Drive, 6.31 m (20.7 ft) west
of the centerline of Avenue G (Pomar Road), and 0.61 m (2.0 ft) east of a
carsonite witness post.

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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


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


                         BENCH MARK STAMPING:  0651 D 1996
                         DESIGNATION:          872 0651 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        15882
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   29° 46.2' N (  29.76944)          LONGITUDE:  81° 15.3' W ( -81.25500)


The bench mark is a disk set in the top of a round concrete monument flush with
the ground and level with the road, 108.20 m (355.0 ft) east of 0651 C 1996,
5.27 m (17.3 ft) east of the centerline of Middleton Avenue, 3.72 m (12.2 ft)
north of the extended centerline of Coastal Drive, 1.89 m (6.2 ft) south of a
power pole, and 0.61 m (2.0 ft) west of a carsonite witness post.



                         BENCH MARK STAMPING:  0651 E 1996
                         DESIGNATION:          872 0651 E TIDAL

MONUMENTATION:           Flange-encased Rod                    VM#:        15883
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   29° 46.4' N (  29.77333)          LONGITUDE:  81° 15.3' W ( -81.25556)


The bench mark is a flange-encased rod located 83.82 m (275.0 ft) west of the
centerline of State Road A1A, 29.90 m (98.1 ft) south of the centerline of State
Road 206, 20.33 m (66.7 ft) south of a metal light pole, 8.08 m (26.5 ft) south
of the centerline of Middleton Avenue, 6.64 m (21.8 ft) west of the centerline
of Avenue D and 0.61 m (2.0 ft) north of a carsonite witness post.  The datum
point is set flush with the ground, being the top of a stainless steel rod
driven 24.38 m (80.0 ft) to refusal, and encased in a 5-inch NOS logo cap.

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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


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


                         BENCH MARK STAMPING:  V 321 1970
                         DESIGNATION:          V 321

MONUMENTATION:           Bench Mark disk                       VM#:        15884
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  AQ0367
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   29° 46.4' N (  29.77333)          LONGITUDE:  81° 15.3' W ( -81.25556)


The bench mark is a disk set in the top of a round concrete monument recessed
0.06 m (0.2 ft) below the level of the ground and level with the road, 15.61 m
(51.2 ft) east of the centerline of State Road A1A, 3.29 m (10.8 ft) north of
the centerline of a driveway leading to house number 6680, 0.91 m (3.0 ft) NW of
a utility pole, and 0.61 m (2.0 ft) west of a fence corner.

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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


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


                         BENCH MARK STAMPING:  W 321 1970
                         DESIGNATION:          W 321

MONUMENTATION:           Bench Mark disk                       VM#:        15885
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  AQ0363
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   29° 47.3' N (  29.78806)          LONGITUDE:  81° 15.6' W ( -81.26000)


The bench mark is a disk set in the top of a round concrete monument projecting
0.09 m (0.3 ft) above the level of the ground and about 0.30 m (1.0 ft) below
the level of the road, 73.15 m (240.0 ft) south of the extended centerline of
Mary Street, 13.66 m (44.8 ft) west of the centerline of State Road A1A, 8.41 m
(27.6 ft) SW of the south end of a pipe culvert, 0.61 m (2.0 ft) north of a
power pole, and 0.64 m (2.1 ft) south of a metal witness post.

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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


                            T I D A L   D A T U M S 


Tidal datums at CRESCENT BEACH, MATANZAS RIVER based on:

     LENGTH OF SERIES:      1 YEAR
     TIME PERIOD:           January 2004 - December 2004
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8720218 BAR PILOTS DOCK, ST JOHNS RIVER


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (09/27/2004)         =  2.129
     MEAN HIGHER HIGH WATER                     MHHW   =  1.389
     MEAN HIGH WATER                            MHW    =  1.294
     North American Vertical Datum              NAVD88 =  0.814
     MEAN SEA LEVEL                             MSL    =  0.703
     MEAN TIDE LEVEL                            MTL    =  0.675
     MEAN LOW WATER                             MLW    =  0.056
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (12/13/2004)         = -0.565

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0651 B 1996                                 1.926    0.632
     0651 A 1996                                 1.888    0.594
     0651 C 1996                                 2.963    1.669
     0651 D 1996                                 2.626    1.332
     0651 E 1996                                 2.161    0.867
     V 321 1970                                  2.354    1.060
     W 321 1970                                  2.229    0.935


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

                                                                                
Station ID: 8720651                         PUBLICATION DATE:  08/25/2011
Name:       CRESCENT BEACH, MATANZAS RIVER                    
            FL
NOAA Chart: 11485                           Latitude:   29° 46.1' N (  29.76830)
USGS Quad:  ST AUGUSTINE BEACH              Longitude:  81° 15.5' W ( -81.25830)


                             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 8720651 Crescent Beach, Matanzas River, FL

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services