Published Bench Mark Sheet for 8726924 ANCLOTE, ANCLOTE RIVER FLORIDA
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 02/13/1989
Station ID: 8726924 SUPERCEDED DATE: 04/21/2003
Name: ANCLOTE, ANCLOTE RIVER
FLORIDA
NOAA Chart: 11412 Latitude: 28° 10.3' N
USGS Quad: TARPON SPRINGS Longitude: 82° 47.1' W
To reach the tidal bench marks from the city hall in Tarpon Springs, proceed 1.0
mile (1.6 km) north on U.S. Highway 19 (ALT) to Anclote Road. Continue west
along Anclote Road 2.5 miles (4.0 km) to Anclote Boulevard and Oceola Street.
Continue along Anclote Boulevard to the intersection with Hickory Road. Turn
left on Hickory Road to Pauls 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
MONUMENTATION: Survey Disk VM#: 7667
AGENCY: PID#: AL6626
SETTING CLASSIFICATION: Concrete Culvert
The bench mark is at the SE intersection of Anclote Boulevard and Oceola Street,
in the top center of the inside corner of the L shaped 0.9 foot (0.3 m) thick
concrete culvert abutment, 25.0 feet (7.6 m) SE of the centerline of Oceola
Street, 23.0 feet (7.0 m) NE of the centerline of Anclote Boulevard, 13.0 feet
(4.0 m) SW of the NE end of the abutment and 10.5 feet (3.2 m) south of utility
pole No. 2 14086, and 9.5 feet (2.9 m) NW of the SE end of the abutment.
BENCH MARK STAMPING: LEISNER 1952
MONUMENTATION: Survey Disk VM#: 7666
AGENCY: PID#: AL6628
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set on top of a 0.6 foot (0.2 m) square concrete monument at
ground level, 85.0 feet (25.9 m) NW of the center of the intersection of Oceola
Street and Riverside, 18.0 feet (5.5 m) SW of the centerline of Riverside, and
8.0 feet (2.4 m) NE of the sea wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
PUBLICATION DATE: 02/13/1989
Station ID: 8726924 SUPERCEDED DATE: 04/21/2003
Name: ANCLOTE, ANCLOTE RIVER
FLORIDA
NOAA Chart: 11412 Latitude: 28° 10.3' N
USGS Quad: TARPON SPRINGS Longitude: 82° 47.1' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6924 B 1979 CLB
MONUMENTATION: Survey Disk VM#: 7668
AGENCY: PID#: AL7357
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is at the NE corner of the intersection of County road 76
(Anclote Boulevard) and Calvary Road, 112.3 feet (34.2 m) ESE of the SE corner
of Calvary Baptist Church, 66.2 feet (20.2 m) north of the centerline of Anclote
Boulevard, 13.3 feet (40.5 m) east of the centerline of Calvary Road, 4.8 feet
(1.5 m) east of a utility pole and 3.0 feet (0.9 m) south of a witness post.
The bench mark is crimped to a 5/8 inch diameter copper-clad steel rod driven
15.0 feet (4.6 m) and encased in a protector pipe projecting 0.2 foot (0.06 m)
above ground surface.
BENCH MARK STAMPING: 6924 C 1979 CLB
MONUMENTATION: Survey Disk VM#: 7669
AGENCY: PID#: AL7358
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is 312.0 feet (95.1 m) SW along Calvary Road from the
intersection of Anclote Boulevard and Calvary Road, 20.5 feet (6.2 m) WNW of the
centerline of Calvary Road, 25.9 feet (7.9 m) NNE of a fence cornerpost, 14.4
feet (4.4 m) ENE of an end fence post, 5.0 feet (1.5 m) SW of a witness post and
4.2 feet (1.3 m) SSW of a utility pole. The bench mark is crimped to a 5/8 inch
diameter copper-clad steel rod driven 15.0 feet (4.6 m) and encased in a
protector pipe, at ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
PUBLICATION DATE: 02/13/1989
Station ID: 8726924 SUPERCEDED DATE: 04/21/2003
Name: ANCLOTE, ANCLOTE RIVER
FLORIDA
NOAA Chart: 11412 Latitude: 28° 10.3' N
USGS Quad: TARPON SPRINGS Longitude: 82° 47.1' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: Y 141
MONUMENTATION: Survey Disk VM#: 7670
AGENCY: PID#: AL7359
SETTING CLASSIFICATION: Concrete and Brick Road
The bench mark is set at road center, 0.1 mile (0.2 km) SW along Calvary Road
from the intersection of Calvary Road and Anclote Boulevard, at the center of
the intersection of Calvary Road and County Road 47, 28.0 feet (8.5 m) SSW of
utility pole NO 12A 1491 R and 23.0 feet (7.0 m) east of a fence corner.
BENCH MARK STAMPING: FLORIDA SRD
MONUMENTATION: Survey Disk VM#: 12417
AGENCY: PID#: AL6627
SETTING CLASSIFICATION: Culvert Abutment
The bench mark is set in the top of a 0.8 foot (0.2 m) thick, 15 feet (5 m) long
culvert abutment, about 1 foot (0.3 m) below the road surface near the center of
the inside curve on the east side of Anclote Boulevard, about 275 feet (84 m)
north of the centerline of Hickory Road, and about 20 feet (6 m) west of power
pole No. 60282.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
PUBLICATION DATE: 02/13/1989
Station ID: 8726924 SUPERCEDED DATE: 04/21/2003
Name: ANCLOTE, ANCLOTE RIVER
FLORIDA
NOAA Chart: 11412 Latitude: 28° 10.3' N
USGS Quad: TARPON SPRINGS Longitude: 82° 47.1' W
T I D A L D A T U M S
Tidal datums at ANCLOTE, ANCLOTE RIVER based on:
LENGTH OF SERIES: 12 MONTHS
TIME PERIOD: APRIL 1975-MARCH 1976
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8726724 CLEARWATER BEACH
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (07/12/1975) = 5.14
MEAN HIGHER HIGH WATER (MHHW) = 3.11
MEAN HIGH WATER (MHW) = 2.74
MEAN TIDE LEVEL (MTL) = 1.65
MEAN LOW WATER (MLW) = 0.56
MEAN LOWER LOW WATER (MLLW) = 0.00
LOWEST OBSERVED WATER LEVEL (01/19/1976) = -1.82
National Geodetic Vertical Datum (NGVD 29)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
NO 1 1973 10.62 7.88
LEISNER 1952 5.99 3.25
6924 B 1979 CLB 8.21 5.47
6924 C 1979 CLB 8.51 5.77
Y 141 7.58 4.84
FLORIDA SRD 6.96 4.22
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 02/13/1989
Station ID: 8726924 SUPERCEDED DATE: 04/21/2003
Name: ANCLOTE, ANCLOTE RIVER
FLORIDA
NOAA Chart: 11412 Latitude: 28° 10.3' N
USGS Quad: TARPON SPRINGS Longitude: 82° 47.1' W
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 (NAVD 88).
NGVD 29 is a fixed datum adopted as a national standard geodetic reference for
heights but is now considered superseded. NGVD 29 is sometimes referred to as
Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological
Survey Topographic Quads. NGVD 29 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 NGVD 29 are available from the National
Geodetic Survey (NGS) data base via the World Wide Web at
National Geodetic Survey.
NAVD 88 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. NAVD 88 replaces NGVD 29 as the national
standard geodetic reference for heights. Bench mark elevations relative to
NAVD 88 are available from NGS through the World Wide Web at
National Geodetic Survey.
NGVD 29 and NAVD 88 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 NAVD 88 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have NAVD 88 elevations.
The NAVD 88 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, NAVD 88 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from NAVD 88 elevations listed for
each bench mark in the NGS database.
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