U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8729063 PUBLICATION DATE: 11/13/2003
Name: CALLAWAY BAYOU EAST BAY
FL
NOAA Chart: 11389 Latitude: 30° 8.2' N ( 30.13670)
USGS Quad: SPRINGFIELD Longitude: 85° 34.3' W ( -85.57170)
To reach the tidal bench marks from the intersection of County Road 22 and U.S.
Highway 98 in Callaway, proceed east on County Road 22 for 1.6 km (1.0 mi) to
the junction of County Road 2323, then south on County Road 2323 for 1.0 km (0.6
mi) to Cherry Street, then east on Cherry Street for 0.3 km (0.2 mi) to Beaulah
Avenue, then south on Beaulah Avenue for 1.0 km (0.6 mi) to the City of Callaway
Recreation Center. The bench marks are in the vicinity of the recreation
center. The tide gage and staff were located on the westernmost dock at the
recreation center.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9063 A 1976
DESIGNATION: 872 9063 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 9963
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2959
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 8.2' N ( 30.13670) LONGITUDE: 85° 34.2' W ( -85.57000)
The primary bench mark is a disk located 42.40 m (139.1 ft) SW of Bench Mark
9063 D 1976, 26 m (87 ft) west of the NW corner of the westernmost covered
picnic tables, 17 m (55 ft) north of the water's edge, and 0.73 m (2.4 ft) north
of a power pole with a witness sign. The bench mark is set 12 cm (0.4 ft) below
ground level, crimped to the top of a copper-clad steel rod driven 12 m (40 ft)
to refusal, and encased in PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8729063 PUBLICATION DATE: 11/13/2003
Name: CALLAWAY BAYOU EAST BAY
FL
NOAA Chart: 11389 Latitude: 30° 8.2' N ( 30.13670)
USGS Quad: SPRINGFIELD Longitude: 85° 34.3' W ( -85.57170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9063 B 1976
DESIGNATION: 872 9063 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 9964
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2957
SETTING CLASSIFICATION: Concrete apron OPUS PID:
LATITUDE: 30° 8.2' N ( 30.13670) LONGITUDE: 85° 34.2' W ( -85.57000)
The bench mark is a disk set in the top of a concrete apron on the NW side of
Callaway Recreation Center, 21.76 m (71.4 ft) NE of bench mark 9063 D 1976,
17.53 m (57.5 ft) SW of powerline pole #6615541498, 12 m (38 ft) south of the SE
corner of the tennis courts, and 1.5 m (5 ft) north of the north side of the
building.
BENCH MARK STAMPING: 9063 D 1976
DESIGNATION: 872 9063 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 9966
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2958
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 30° 8.2' N ( 30.13670) LONGITUDE: 85° 34.2' W ( -85.57000)
The bench mark is a disk set flush in the west end of a shuffle board court,
42.40 m (139.1 ft) NE of bench mark 9063 A 1976, 21.76 m (71.4 ft) WSW of bench
mark 9063 B 1976, 1.40 m (4.6 ft) south of the north corner of the court, 0.58 m
(1.9 ft) north of the south edge of the court, 0.58 m (1.9 ft) east of the
western edge of the shuffle board court, and 21.34 m (70.0 ft) west of the NW
corner of the recreation center.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8729063 PUBLICATION DATE: 11/13/2003
Name: CALLAWAY BAYOU EAST BAY
FL
NOAA Chart: 11389 Latitude: 30° 8.2' N ( 30.13670)
USGS Quad: SPRINGFIELD Longitude: 85° 34.3' W ( -85.57170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9063 E 1976
DESIGNATION: 872 9063 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 9967
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2956
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 8.2' N ( 30.13670) LONGITUDE: 85° 34.3' W ( -85.57170)
The bench mark is a disk located 0.2 km (0.1 mi) north of the recreation center,
9 m (30 ft) south of the centerline of Minneola Street, 8 m (26 ft) west of the
centerline of Beaulah Avenue, 1.5 m (5 ft) SW of a powerline pole, and 1.07 m
(3.5 ft) SW of a light pole. The bench mark is set 18 cm (0.6 ft) below ground
level, crimped to the top of a copper-clad steel rod driven 12 m (40 ft) to
refusal, and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8729063 PUBLICATION DATE: 11/13/2003
Name: CALLAWAY BAYOU EAST BAY
FL
NOAA Chart: 11389 Latitude: 30° 8.2' N ( 30.13670)
USGS Quad: SPRINGFIELD Longitude: 85° 34.3' W ( -85.57170)
T I D A L D A T U M S
Tidal datums at CALLAWAY BAYOU EAST BAY based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: September 1976 - September 1976
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8729015 ALLANTON, EAST BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.438
MEAN HIGH WATER MHW = 0.412
MEAN TIDE LEVEL MTL = 0.215
MEAN SEA LEVEL MSL = 0.214
North American Vertical Datum NAVD88 = 0.173
MEAN LOW WATER MLW = 0.018
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
9063 A 1976 1.663 1.251
9063 B 1976 3.605 3.192
9063 D 1976 3.267 2.855
9063 E 1976 5.154 4.742
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8729063 PUBLICATION DATE: 11/13/2003
Name: CALLAWAY BAYOU EAST BAY
FL
NOAA Chart: 11389 Latitude: 30° 8.2' N ( 30.13670)
USGS Quad: SPRINGFIELD Longitude: 85° 34.3' W ( -85.57170)
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.