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National Ocean Service
Datums Page Page 1 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
To reach the tidal bench marks from the Post Office in Anna Maria, proceed NW
along Gulf Drive (C 789) for 0.5 km (0.3 mi) to Pine Avenue, then NE along Pine
Avenue for 0.8 km (0.5 mi) to Anna Maria City Fishing Pier. The bench marks are
located along Pine Avenue. The tide gage and staff were located on the NE
inside corner of the pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 6282 A 1976
DESIGNATION: 872 6282 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 6196
AGENCY: National Ocean Survey (NOS) IDB PID#: AG7391
SETTING CLASSIFICATION: Concrete catch basin OPUS PID#: AG7391
LATITUDE: 27° 31.9' N ( 27.53170) LONGITUDE: 82° 43.9' W ( -82.73170)
The primary bench mark is a disk set in the SE corner of a concrete drain ditch,
46 m (151 ft) SW of the centerline of Bay Boulevard, 10.21 m (33.5 ft) NE of a
35 mph speed limit sign post, 6.19 m (20.3 ft) NW of the centerline of Pine
Avenue, and 2 m (6 ft) south of the corner of a block wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: R 254 1965
DESIGNATION: R 254
MONUMENTATION: Bench Mark disk VM#: 6194
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AG5207
SETTING CLASSIFICATION: Concrete walkway OPUS PID:
LATITUDE: 27° 31.8' N ( 27.53000) LONGITUDE: 82° 44.1' W ( -82.73500)
The bench mark is a disk set flush in the SE corner of the bridge walkway, 0.12
m (0.4 ft) above the level of Crescent Drive.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: S 254 1965
DESIGNATION: S 254
MONUMENTATION: Reference Mark disk VM#: 6195
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AG5205
SETTING CLASSIFICATION: Concrete walkway OPUS PID:
LATITUDE: 27° 32.0' N ( 27.53330) LONGITUDE: 82° 44.0' W ( -82.73330)
The bench mark is a disk set in the top of the SE end of the SW concrete walkway
of a concrete bridge over a canal, 0.91 k (100 ft) yards NW of the SW end of the
Anna Maria City fishing pier, 3.35 m (11 ft) SW of the center line of the
Boulevard, and about level with the Boulevard.
BENCH MARK STAMPING: 6282 C 2002
DESIGNATION: 872 6282 C TIDAL
MONUMENTATION: Flange-encased Rod VM#: 19899
AGENCY: Florida Dept. of Environmental
Protection (FLDEP) IDB PID#: DG5816
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 27° 32.0' N ( 27.53256) LONGITUDE: 82° 43.9' W ( -82.73183)
The bench mark is a flange-encased rod located 17.53 m (57.5) ft NE of the
centerline of South Bay Boulevard, 12.80 m (42.0 ft) SE of the SW corner of the
Anna Maria City Pier, 2.23 m (7.3 ft) SE of the SE corner of a table, 0.31 m
(1.0 ft) NE of a carsonite witness post and 0.7 ft NE of the NW corner of a
wooden fence. The bench mark is a flange-encased rod, being the top of a
stainless steel rod driven to refusal at a depth of 10.91 m (35.8) ft with a NGS
logo cap recessed 0.03 m (0.1 ft) below the level of the ground and below the
level of South Bay Boulevard, the datum point being recessed 0.03 m (0.1 ft)
below the level of the NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6282 D 2002
DESIGNATION: 872 6282 D TIDAL
MONUMENTATION: Flange-encased Rod VM#: 19900
AGENCY: Florida Dept. of Environmental
Protection (FLDEP) IDB PID#: DG5815
SETTING CLASSIFICATION: Stainless steel rod OPUS PID#: DG5815
LATITUDE: 27° 31.9' N ( 27.53164) LONGITUDE: 82° 43.8' W ( -82.73000)
The bench mark is a flange-encased rod located 11.89 m (39.0 ft) NW of power
pole number 502826658 with 1 light and 6 guy wires attached, 8.69 m (28.5 ft) NE
of the centerline of South Bay Boulevard, 5.79 m (19.0 ft) NW of the extended
centerline of Magnolia Avenue, 1.98 m (6.5 ft) west of a fire hydrant, 0.98 m
(3.2 ft) NW of the SE end of a wooden fence, 0.27 m (0.9 ft) SW of a carsonite
witness post and 0.21 m (0.7 ft) SW of a wooden fence. The bench mark is a
flange-encased rod being the top of a stainless steel rod driven to refusal at a
depth of 11.19 m (36.7) ft with a NGS logo cap recessed 0.03 m (0.1 ft) below
the level of the ground and below the level of South Bay Boulevard, the datum
point being recessed 0.12 m (0.4 ft) below the level of the NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6282 E 2002
DESIGNATION: 872 6282 E TIDAL
MONUMENTATION: Flange-encased Rod VM#: 19901
AGENCY: Florida Dept. of Environmental
Protection (FLDEP) IDB PID#: DG5817
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 27° 31.9' N ( 27.53164) LONGITUDE: 82° 43.8' W ( -82.73000)
The bench mark is a flange-encased rod located 48.68 m (159.7 ft) NE of the
centerline of North Shore Drive, 41.15 m (135.0 ft) SE of the extended
centerline of Poinsettia Road, 19. 11 m (62.7) ft NE of the NE corner of a
house at 901, 16.15 (53.0 ft) north of the NE corner of a house at 903, 0.67 m
(2.2 ft) SE of the NE end of a 2-foot tall concrete wall and 0.34 m (1.1 ft) NE
of a seawall. The bench mark is a flange-encased rod, being the top of a
stainless steel rod driven to refusal at a depth of 11.34 m (37.2 ft) with a NGS
logo cap flush with the ground and about 0.30 m (1.0 ft) below the top of the
seawall, the datum point being recessed 0.91 m (0.3 ft) below the level of the
NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
T I D A L D A T U M S
Tidal datums at ANNA MARIA, CITY PIER based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: June 1976 - August 1976
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:
MEAN HIGHER HIGH WATER MHHW = 0.660
MEAN HIGH WATER MHW = 0.582
North American Vertical Datum NAVD88 = 0.493
MEAN SEA LEVEL MSL = 0.355
MEAN TIDE LEVEL MTL = 0.347
MEAN LOW WATER MLW = 0.112
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
6282 A 1976 1.128 0.546
R 254 1965 3.578 2.996
S 254 1965 3.876 3.294
6282 C 2002 1.256 0.674
6282 D 2002 1.292 0.710
6282 E 2002 0.931 0.349
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 6282 C 2002, 6282 D 2002, and 6282
E 2002 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: 8726282 PUBLICATION DATE: 05/12/2011
Name: ANNA MARIA, CITY PIER
FL
NOAA Chart: 11414 Latitude: 27° 32.0' N ( 27.53330)
USGS Quad: ANNA MARIA Longitude: 82° 43.8' W ( -82.73000)
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.