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Bench Mark Sheet for 8726384, Port Manatee 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


To reach the tidal bench marks from the junction of I-275 South and US Highway
41 North, proceed north on US Highway 41 for 5.5 km (3.40 mi) , then proceed
west on Piney Point Road for 0.6 km (0.35 mi), then proceed SW on Harley Road
for 1.2 km (0.75 mi) through the security gate (Harley road then turns into
North Dock Road) and continue to the Port Manatee Basin. The bench marks are
around the basin in the port area. The tide station is located just north of the
NW corner of the turning basin along the bulkhead fronting the bay, near Berth
4.


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


                 PRIMARY BENCH MARK STAMPING:  6384 L 2004
                         DESIGNATION:          872 6384 L

MONUMENTATION:           Tidal Station disk                    VM#:        17597
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  concrete Sea wall                     OPUS PID:        
LATITUDE:   27° 38.2' N (  27.63728)          LONGITUDE:  82° 33.8' W ( -82.56308)


The primary bench mark is a disk set in the western sea wall in the concrete
bulkhead of berth 4, located 34.50 m (113.16 ft) NW of the SW corner of
warehouse 210,  0.5 m (1.5 ft) west of a bollard, 0.435 m (1.4 ft) NW of the SE
edge of the concrete bulkhead.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


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


                         BENCH MARK STAMPING:  6384 C 1976
                         DESIGNATION:          872 6384 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         7807
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AG7340
SETTING CLASSIFICATION:  Building foundation                   OPUS PID:        
LATITUDE:   27° 38.0' N (  27.63364)          LONGITUDE:  82° 33.6' W ( -82.55919)


The bench mark is a disk set in the concrete footing of a blue aluminum building
(warehouse) located E of the Port Manatee turning basin area, 43.37 m (142.29
ft) E of the E bulkhead of the basin, 1.19 m (3.90 ft) N of the S garage door of
two doors on the W side of the building, and 0.30 m (0.98 ft) W of the building.



                         BENCH MARK STAMPING:  6384 F 1976
                         DESIGNATION:          872 6384 F TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         7809
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  AG7342
SETTING CLASSIFICATION:  base of structure                     OPUS PID:        
LATITUDE:   27° 39.0' N (  27.64956)          LONGITUDE:  82° 33.8' W ( -82.56272)


The bench mark is a disk set in the S side of a concrete pad for two bollards at
the NW corner of the dock on the S side of the Port Manatee Boat basin, 1.46 m
(4.79 ft) S of the N edge of the dock, and 1.37 m (4.49 ft) E of the W edge of
the dock.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


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


                         BENCH MARK STAMPING:  6384 K 2004
                         DESIGNATION:          872 6384 K

MONUMENTATION:           Tidal Station disk                    VM#:        17596
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Sea wall                              OPUS PID#: BBBT27
LATITUDE:   27° 38.3' N (  27.63842)          LONGITUDE:  82° 33.8' W ( -82.56292)


The bench mark is a disk set in the W sea wall 80.25 m (263.29 ft) SW from the W
corner of the Florida Fish and Wildlife building at the entrance the pump
station, 52.50 m (172.24 ft ) SW of Fire hydrant K81A in the NE corner of the
parking lot, 10.20 m (33.46 ft) SW from the center of the only bollard on the N
sea wall, and 6.40 m (21.00 ft) NE of the most N bollard on the W sea wall.



                         BENCH MARK STAMPING:  6384 L 2007
                         DESIGNATION:          872 6384 L TIDAL

MONUMENTATION:           Survey disk                           VM#:        19857
AGENCY:                  Florida Dept. of Environmental
                         Protection (FLDEP)                    IDB PID#:  DL1870
SETTING CLASSIFICATION:  Concrete sea wall                     OPUS PID:        
LATITUDE:   27° 38.1' N (  27.63475)          LONGITUDE:  82° 33.5' W ( -82.55883)


The bench mark is a disk set flush in the top of the concrete seawall just west
of the NE corner of the boat basin, 25.3 m (83.0 ft) WSW of bench mark 6384 K
2007, 23.3 m (76.4 ft) south of the SE corner of a large gray metal building,
21.9 m (71.6 ft) ENE of the second mooring bollard west of the NE corner of the
boat basin, 21.8 m (31.4 ft) WSW of the first mooring bollard west of the NE
corner of the boat basin, and about 0.6 m (2.0 ft) north of the south edge of
the seawall.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


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


                         BENCH MARK STAMPING:  DNR JEG 1976
                         DESIGNATION:          JEG

MONUMENTATION:           Bench Mark disk                       VM#:        19858
AGENCY:                  Florida Dept. of Environmental
                         Protection (FLDEP)                    IDB PID#:  AG7336
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   27° 38.2' N (  27.63747)          LONGITUDE:  82° 32.9' W ( -82.54811)


The bench mark is a disk located 17.6 m (57.6 ft) east of the centerline of
Reeder Road, 13.6 m (44.6 ft) SW of the centerline of Piney Point Road, 10.0 m
(32.9 ft) NNW of the center of a cluster of five palm trees in the center of a
round rock garden, 7.3 m (23.8 ft) SSE of a stop sign, 6.9 m (22.6 ft) SW of a
wooden telephone pole numbered 161-2 with one guy wire attached, and 0.3 m (1.0
ft) north of a carsonite witness post.  The bench mark is set below the level of
Piney Point Road, crimped to a copper clad steel rod encased in a 10 cm (4-inch)
pvc pipe with a concrete kick block 0.5 m (1.5 ft).



                         BENCH MARK STAMPING:  6384 M 2014
                         DESIGNATION:          872 6384 M

MONUMENTATION:           Tidal Station disk                    VM#:        21002
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete bulkhead                     OPUS PID#: BBFP57
LATITUDE:   27° 38.2' N (  27.63625)          LONGITUDE:  82° 33.8' W ( -82.56319)


The bench mark is a disk set in the W sea wall, 46.97m (153.8 ft) NW of the SW
corner of warehouse 210, 1.92m (6.3 ft) W of a ballard, and 0.435m (1.4 ft) NW
of the SE edge of the concrete bulkhead.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


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


                         BENCH MARK STAMPING:  6384 N 2014
                         DESIGNATION:          872 6384 N

MONUMENTATION:           Bench Mark disk                       VM#:        21003
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete bulkhead                     OPUS PID:        
LATITUDE:   27° 38.1' N (  27.63522)          LONGITUDE:  82° 33.8' W ( -82.56331)


The benchmark is a disk set in the W sea wall, 5.331 m (17.5 ft) S of the first
ballard N of the S corner of sea wall, 34.43 m (113.0 ft) WSW of a light tower,
0.240 m (0.8 ft) W of the E edge of the concrete sea wall.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


                            T I D A L   D A T U M S 


Tidal datums at PORT MANATEE, TAMPA BAY based on:

     LENGTH OF SERIES:      14 Years
     TIME PERIOD:           12/99 - 11/08 & 1/12 - 12/16
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8726520 ST. PETERSBURG, TAMPA BAY


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

     HIGHEST OBSERVED WATER LEVEL (09/02/2016)         =  1.377
     MEAN HIGHER HIGH WATER                     MHHW   =  0.664
     MEAN HIGH WATER                            MHW    =  0.581
     North American Vertical Datum              NAVD88 =  0.469
     MEAN SEA LEVEL                             MSL    =  0.353
     MEAN TIDE LEVEL                            MTL    =  0.346
     MEAN LOW WATER                             MLW    =  0.112
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/03/2008)         = -0.618

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     6384 L 2004                                 2.583    2.002
     6384 C 1976                                 2.976    2.395
     6384 F 1976                                 2.587    2.006
     6384 K 2004                                 2.582    2.001
     6384 L 2007                                 2.657    2.076
     DNR JEG 1976                                2.033    1.452
     6384 M 2014                                 2.582    2.001
     6384 N 2014                                 2.577    1.996


Foot Notes:

Bench mark 6384 L 2007 is based on one differential leveling connection and does
not meet the quality control standards of the NOS. Therefore, caution should be
used when deriving elevations for this mark.

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

                                                                                
Station ID: 8726384                         PUBLICATION DATE:  09/12/2017
Name:       PORT MANATEE, TAMPA BAY                           
            FL
NOAA Chart: 11416                           Latitude:   27° 38.3' N (  27.63833)
USGS Quad:  COCKROACH BAY                   Longitude:  82° 33.8' W ( -82.56250)


                             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 8726384 Port Manatee, FL

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