U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
To reach the bench marks from the intersection of U.S. Highway 19 and State
Highway 60 (Gulf to Bay Boulevard) in Clearwater, proceed south along U.S.
Highway 19 for 1.9 km (1.2 mi) to Nursery Road, continue east on Nursery Road
through the entrance of the Bay Aristocrat Village Mobile Home Park to the
wooden pier extending into Old Tampa Bay. The bench marks are along Nursery Road
and U.S. Highway 19. The tide station was located on the west end of the wooden
pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1975
DESIGNATION: 872 6689 TIDAL 1
MONUMENTATION: Tidal Station disk VM#: 11365
AGENCY: National Ocean Survey (NOS) IDB PID#: AG6376
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 27° 56.5' N ( 27.94170) LONGITUDE: 82° 43.3' W ( -82.72170)
The primary bench mark is a disk located between trailer house #409 and #407 in
Bay Aristocrat Village, 4 m (12 ft) south of the centerline of Nursery Road, and
0.30 m (1.0 ft) north of telephone pole #24790. The bench mark is crimped to a
copper-clad steel rod driven 21.3 m (70 ft) to refusal, and encased in a PVC
pipe with concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 2 1975
DESIGNATION: 872 6689 TIDAL 2
MONUMENTATION: Tidal Station disk VM#: 11366
AGENCY: National Ocean Survey (NOS) IDB PID#: AG6377
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 27° 56.5' N ( 27.94170) LONGITUDE: 82° 43.5' W ( -82.72500)
The bench mark is a disk located between trailer house #425 and #427 in Bay
Aristocrat Village, 118 m (386 ft) west of bench mark NO 1 1975, 4 m (12 ft)
south of the centerline of Nursery Road, and 0.30 m (1.0 ft) north of telephone
pole #24792. The bench mark is crimped to a copper-clad steel rod driven an
unspecified depth to refusal, and encased in a PVC pipe with concrete kickblock.
BENCH MARK STAMPING: 6689 A 1990
DESIGNATION: 872 6689 A TIDAL
MONUMENTATION: Flange-encased Rod VM#: 11367
AGENCY: National Ocean Service (NOS) IDB PID#: AG9421
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 27° 56.4' N ( 27.94000) LONGITUDE: 82° 43.8' W ( -82.73000)
The bench mark is a flange-encased rod located at the intersection of U.S.
Highway 19 and Nursery Road, 44.50 m (146.0 ft) east of the centerline of U.S.
Highway 19, 4 m (12 ft) south of the centerline of Nursery Road, 1.22 m (4.0 ft)
SE of a light post, 0.52 m (1.7 ft) north of a wooden fence, and 0.52 m (1.7 ft)
north of a witness post. The datum point is top of a stainless steel rod driven
20.1 m (66 ft) to refusal, encased in a 5-inch logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 3 1975
DESIGNATION: 872 6689 TIDAL 3
MONUMENTATION: Tidal Station disk VM#: 13630
AGENCY: National Ocean Survey (NOS) IDB PID#: AG6378
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 27° 56.6' N ( 27.94330) LONGITUDE: 82° 43.2' W ( -82.72000)
The bench mark is a disk set in a concrete sea wall north of the Bay Aristocrat
Village pier, 74 m (244 ft) NE of bench mark NO 1 1975, 27 m (90 ft) east of the
centerline of Nursery Road, and 26 m (86 ft) north of the centerline of the
sidewalk.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: CAMPUS G
DESIGNATION: CAMPUS G
ALIAS: 872 6687 TIDAL P CO / 872 6689
TIDAL P CO
MONUMENTATION: Azimuth Mark disk VM#: 13631
AGENCY: Pinellas County IDB PID#: AG0429
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 27° 56.5' N ( 27.94170) LONGITUDE: 82° 43.8' W ( -82.73000)
The bench mark is a disk set in the top of a concrete monument located on the
east side of U.S. Highway 19 North near its intersection with Belleaire Road,
0.6 km (0.4 mi) south of the junction of U.S. Highway 19 and Nursery Road, 32 m
(106 ft) east of the centerline of U.S. Highway 19, 13 m (42 ft) north of the
centerline of Belleaire Road, and 1.07 m (3.5 ft) ESE of the NW corner of the
sanitary sewer pump station.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
T I D A L D A T U M S
Tidal datums at BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY based on:
LENGTH OF SERIES: 2 Years
TIME PERIOD: June 1990 - May 1991
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 (05/15/1976) = 1.330
MEAN HIGHER HIGH WATER MHHW = 0.855
MEAN HIGH WATER MHW = 0.750
North American Vertical Datum NAVD88 = 0.538
MEAN SEA LEVEL MSL = 0.453
MEAN TIDE LEVEL MTL = 0.453
MEAN LOW WATER MLW = 0.157
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (11/30/1990) = -0.508
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 1 1975 2.086 1.336
NO 2 1975 2.099 1.349
6689 A 1990 3.287 2.537
NO 3 1975 1.903 1.153
CAMPUS G 2.455 1.705
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8726689 PUBLICATION DATE: 04/21/2003
Name: BAY ARISTOCRAT VILLAGE, OLD TAMPA BAY
FL
NOAA Chart: 11412 Latitude: 27° 56.5' N ( 27.94170)
USGS Quad: SAFETY HARBOR Longitude: 82° 43.2' W ( -82.72000)
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.