U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 4
Station ID: 8727086 PUBLICATION DATE: 04/29/2004
Name: FILLMANS BAYOU
FLORIDA
NOAA Chart: 11409 Latitude: 28° 24.8' N
USGS Quad: ARIPEKA Longitude: 82° 40.6' W
To reach the tidal bench marks from the intersection of U.S. Highway 19 and
County Road C-595 SE of Aripeka, proceed west on County Road C-595 for 1.8 km
(1.1 mi) to the junction of Old Dixie Highway, then turn and proceed south on
Old Dixie Highway for 1.8 km (1.1 mi) to a track road leading west along the
north side of a canal, then turn right and proceed west on the track road for
0.6 km (0.4 mi). The bench marks are along the track road and Old Dixie Highway.
The tide gage and staff were located on a platform constructed offshore at the
end of the track road.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 7086 A 1978
DESIGNATION: 872 7086 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 7726
AGENCY: National Ocean Survey (NOS) PID#: AL7690
SETTING CLASSIFICATION: Stainless steel rod
The primary bench mark is a disk located 0.6 km (0.4 mi) west of Old Dixie
Highway along the track road, 24.38 m (80.0 ft) west of a boat launching area,
2.90 m (9.5 ft) north of the centerline of track road, 7 m (24 ft) north of
north edge of canal, 0.27 m (0.9 ft) south of a metal witness post. The bench
mark is crimped to the top of a stainless steel rod drived 13.1 m (43 ft) to
refusal, encased in a PVC pipe and a concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 4
Station ID: 8727086 PUBLICATION DATE: 04/29/2004
Name: FILLMANS BAYOU
FLORIDA
NOAA Chart: 11409 Latitude: 28° 24.8' N
USGS Quad: ARIPEKA Longitude: 82° 40.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7086 B 1978
DESIGNATION: 872 7086 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 7727
AGENCY: National Ocean Survey (NOS) PID#: AL7689
SETTING CLASSIFICATION: Stainless steel rod
The bench mark is a disk located 0.3 km (0.2 mi) west along the track road from
Old Dixie Highway, 36.58 m (120.0 ft) west of an area used for parking, 15.24 m
(50.0 ft) north of the north edge of the canal, 14 m (46 ft) west of a pile of
boulders, 10.67 m (35.0 ft) south of a palm tree, 9.24 m (30.3 ft) north of the
centerline of the track road, 3.66 m (12.0 ft) east of a band of cedar trees.
The bench mark is crimped to the top of a stainless steel rod, driven 3.7 m
(12.0 ft) to refusal, encased in a PVC pipe projecting 0.12 m (0.4 ft) above
ground, and concrete kickblock.
BENCH MARK STAMPING: 7086 C 1978
DESIGNATION: 872 7086 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 7728
AGENCY: National Ocean Survey (NOS) PID#: AL7688
SETTING CLASSIFICATION: Stainless steel rod
The bench mark is a disk located 27.37 m (89.8 ft) WNW of the centerline of Old
Dixie Highway, 23 m (77 ft) north of the track road leading west along the
canal, and 0.30 m (1.0 ft) east of a metal witness post. The bench mark is
crimped to the top of a stainless steel rod driven 10.4 m (34.0 ft), and encased
in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 4
Station ID: 8727086 PUBLICATION DATE: 04/29/2004
Name: FILLMANS BAYOU
FLORIDA
NOAA Chart: 11409 Latitude: 28° 24.8' N
USGS Quad: ARIPEKA Longitude: 82° 40.6' W
T I D A L D A T U M S
Tidal datums at FILLMANS BAYOU based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: July 1978 - November 1978
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) = 0.718
MEAN HIGH WATER (MHW) = 0.608
NORTH AMERICAN VERTICAL DATUM-1988 (NAVD) = 0.363
MEAN TIDE LEVEL (MTL) = 0.332
MEAN SEA LEVEL (MSL) = 0.300
MEAN LOW WATER (MLW) = 0.056
MEAN LOWER LOW WATER (MLLW) = 0.000
National Geodetic Vertical Datum (NGVD 29)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
7086 A 1978 1.790 1.182
7086 B 1978 2.571 1.963
7086 C 1978 2.435 1.827
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 4
Station ID: 8727086 PUBLICATION DATE: 04/29/2004
Name: FILLMANS BAYOU
FLORIDA
NOAA Chart: 11409 Latitude: 28° 24.8' N
USGS Quad: ARIPEKA Longitude: 82° 40.6' 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.