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Bench Mark Sheet for 8726924, ANCLOTE 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


To reach the tidal bench marks from the city hall in Tarpon Springs, proceed 3.2
km (2.0 mi) north on U.S. Highway 19 (ALT) to Anclote Road, continue west along
Anclote Road 2.9 km (1.8 mi) to Oceola Street,  then south on Osceola Street to
"Paul's Fish Camp." The bench marks are in the vicinity along the roads leading
to the pier by Pauls Fish Camp, and the gage site was across Riverside on the
pier at the extended foot of Hickory Road.


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


                 PRIMARY BENCH MARK STAMPING:  NO 1 1973
                         DESIGNATION:          872 6924 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:         7667
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AL6626
SETTING CLASSIFICATION:  Concrete culvert headwall             OPUS PID#: AL6626
LATITUDE:   28° 10.4' N (  28.17330)          LONGITUDE:  82° 47.0' W ( -82.78330)


The primay bench mark is a disk set in the top of the inside corner of a
concrete culvert headwall at the SE corner of the intersection of Anclote
Boulevard and Oceola Street,  7.62 m (25.0 ft) SE of the centerline of Oceola
Street, 7.01 m (23.0 ft) NE of the centerline of Anclote Boulevard, 3.96 m (13.0
ft) SW of the NE end of the headwall, and 3.20 m (10.5 ft) south of powerpole
pole No. 2-14086, and 2.90 m (9.5 ft) NW of the SE end of the headwall.

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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


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


                         BENCH MARK STAMPING:  LEISNER 1952
                         DESIGNATION:          LEISNER

MONUMENTATION:           Triangulation Station disk            VM#:         7666
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  AL6628
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   28° 10.3' N (  28.17170)          LONGITUDE:  82° 47.1' W ( -82.78500)


The bench mark is a disk set on top of a 0.18 m (0.6 ft) square concrete
monument, 25.91 m (85.0 ft) NW of the center of the intersection of Oceola
Street and Riverside, 5.49 m (18.0 ft) SW of the centerline of Riverside, and
2.44 m (8.0 ft) NE of the seawall.



                         BENCH MARK STAMPING:  6924 B 1979 CLB
                         DESIGNATION:          872 6924 B TIDAL FLDNR

MONUMENTATION:           Tidal Station disk                    VM#:         7668
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:  AL7357
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   28° 10.4' N (  28.17330)          LONGITUDE:  82° 46.9' W ( -82.78170)


The bench mark is a disk located at the NE corner of the intersection of County
road 76 (Anclote Boulevard) and Calvary Road, 34.23 m (112.3 ft) ESE of the SE
corner of Calvary Baptist Church, 20.18 m (66.2 ft) north of the centerline of
Anclote Boulevard, 4.05 m (13.3 ft) east of the centerline of Calvary Road, 1.46
m (4.8 ft) east of a utility pole, and 0.91 m (3.0 ft) south of a witness post. 
The bench mark is set 6 cm (0.2 ft) above the ground, crimped to a 5/8 inch
diameter copper-clad steel rod driven 4.6 m (15 ft) and encased in a protector
pipe.

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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


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


                         BENCH MARK STAMPING:  6924 C 1979 CLB
                         DESIGNATION:          872 6924 C TIDAL FLDNR

MONUMENTATION:           Tidal Station disk                    VM#:         7669
AGENCY:                  Florida Department of Natural Resources
                         (FLDNR)                               IDB PID#:  AL7358
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   28° 10.3' N (  28.17170)          LONGITUDE:  82° 47.0' W ( -82.78330)


The bench mark is a disk located 95.10 m (312.0 ft) SW along Calvary Road from
the intersection of Anclote Boulevard and Calvary Road, 7.89 m (25.9 ft) NNE of
a corner fence post, 6.25 m (20.5 ft) WNW of the centerline of Calvary Road,
4.39 m (14.4 ft) ENE of an end fence post, 1.52 m (5.0 ft) SW of a witness post,
and 1.28 m (4.2 ft) SSW of a utility pole.  The bench mark is crimped to a
5/8-inch diameter copper-clad steel rod driven 4.6 m (15 ft) and encased in a
protector pipe.

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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


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


                         BENCH MARK STAMPING:  Y 141
                         DESIGNATION:          Y 141

MONUMENTATION:           Bench Mark disk                       VM#:         7670
AGENCY:                  Florida Geodetic Survey (FLGS)        IDB PID#:  AL7359
SETTING CLASSIFICATION:  Concrete and brick road               OPUS PID:        
LATITUDE:   28° 10.4' N (  28.17330)          LONGITUDE:  82° 47.0' W ( -82.78330)


The bench mark is a disk set in the road at the center of Calvary Road and
County Road 47,  0.2 km (0.1 mi) SW along Calvary Road from the intersection of
Calvary Road and Anclote Boulevard, 8.53 m (28.0 ft) SSW of utility pole NO
12A-1491R, and 7.01 m (23.0 ft) east of a fence corner.

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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


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


                         BENCH MARK STAMPING:  FLORIDA SRD
                         DESIGNATION:          FLA SRD

MONUMENTATION:           Survey disk                           VM#:        12417
AGENCY:                  Florida Department of Transportation
                         (FLDT)                                IDB PID#:  AL6627
SETTING CLASSIFICATION:  Culvert                               OPUS PID:        
LATITUDE:   28° 10.5' N (  28.17500)          LONGITUDE:  82° 47.1' W ( -82.78500)


The bench mark is a disk set flush in the top of a 0.24 m (0.8 ft), 5 m (15 ft)
long culvert abutment located near the center of the inside curve on the east
side of Anclote Boulevard, 84 m (275 ft) north of the centerline of Hickory
Road, and 6 m (20 ft) west of power pole No. 60282, and 0.30 m (1.0 ft) below
the road.

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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


                            T I D A L   D A T U M S 


Tidal datums at ANCLOTE RIVER based on:

     LENGTH OF SERIES:      11 MONTHS
     TIME PERIOD:           April 1975 - February 1976
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8726724 CLEARWATER BEACH, GULF OF MEXICO


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.936
     MEAN HIGH WATER                            MHW    =  0.826
     North American Vertical Datum              NAVD88 =  0.606
     MEAN SEA LEVEL                             MSL    =  0.506
     MEAN TIDE LEVEL                            MTL    =  0.497
     MEAN LOW WATER                             MLW    =  0.168
     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                                   3.182    2.356
     LEISNER 1952                                1.771    0.945
     6924 B 1979 CLB                             2.448    1.622
     6924 C 1979 CLB                             2.539    1.713
     Y 141                                       2.253    1.427
     FLORIDA SRD                                 2.066    1.240


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

                                                                                
Station ID: 8726924                         PUBLICATION DATE:  06/02/2003
Name:       ANCLOTE RIVER                                     
            FL
NOAA Chart: 11412                           Latitude:   28° 10.3' N (  28.17170)
USGS Quad:  TARPON SPRINGS                  Longitude:  82° 47.1' W ( -82.78500)


                             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 8726924 ANCLOTE RIVER, FL

Revised: 08/08/2018
NOAA / National Ocean Service
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