U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8729105 PUBLICATION DATE: 02/26/2004
Name: BEACON BEACH, ST ANDREW BAY
FL
NOAA Chart: 11391 Latitude: 30° 5.5' N ( 30.09170)
USGS Quad: BEACON BEACH Longitude: 85° 38.9' W ( -85.64830)
To reach the tidal bench marks from the main entrance to Tyndall Air Force Base,
proceed 0.7 km (1.7 mi) NW on U.S. Highway 98 to Sabre Drive, then 3.9 km (2.4
mi) west on Sabre Drive to Falcon Street, then 1.0 km (0.6 mi) south on Falcon
Street to the Tyndall AFB marina. The bench marks are along Falcon Street and
near the marina. The tide gage and staff were located just west of the boat
entrance to the marina, on the end of the sixteenth dock on the SW side of the
boat slip.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9105 A 1976
DESIGNATION: 872 9105 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 9996
AGENCY: National Ocean Survey (NOS) IDB PID#: BE3020
SETTING CLASSIFICATION: Concrete flagpole base OPUS PID:
LATITUDE: 30° 5.6' N ( 30.09330) LONGITUDE: 85° 38.9' W ( -85.64830)
The primary bench mark is a disk set flush in a 3.66 m x 3.66 m (12.0 ft x 12.0
ft) concrete pad for a flagpole, 85 m (280 ft) west of bench mark 9105 C 1976,
57.79 m (189.6 ft) west of the end of Falcon Street, 17.13 m (56.2 ft) WNW of
the west corner of the Marina Clubhouse (building #2699), 10.88 m (35.7 ft)
south of the SW corner of building #2696, 0.37 m (1.2 ft) north of the flagpole,
and 0.06 m (0.2 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8729105 PUBLICATION DATE: 02/26/2004
Name: BEACON BEACH, ST ANDREW BAY
FL
NOAA Chart: 11391 Latitude: 30° 5.5' N ( 30.09170)
USGS Quad: BEACON BEACH Longitude: 85° 38.9' W ( -85.64830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9105 B 1976
DESIGNATION: 872 9105 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 9997
AGENCY: National Ocean Survey (NOS) IDB PID#: BE3019
SETTING CLASSIFICATION: Concrete boat ramp OPUS PID:
LATITUDE: 30° 5.6' N ( 30.09330) LONGITUDE: 85° 38.9' W ( -85.64830)
The bench mark is a disk set flush in the westernmost concrete boat ramp, 19.51
m (64.0 ft) north of the north face of the concrete base for two gas pumps,
14.42 m (47.3 ft) south of the east corner of building #2699, 0.34 m (1.1 ft)
SSW of the north edge, and 0.24 m (0.8 ft) west of the east edge of the boat
ramp.
BENCH MARK STAMPING: 9105 C 1976
DESIGNATION: 872 9105 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 9998
AGENCY: National Ocean Survey (NOS) IDB PID#: BE3018
SETTING CLASSIFICATION: Concrete pad OPUS PID:
LATITUDE: 30° 5.6' N ( 30.09330) LONGITUDE: 85° 38.9' W ( -85.64830)
The bench mark is a disk set flush in a 2.13 m (7.0 ft) square concrete pad,
64.37 m (211.2 ft) NE of bench mark 9105 B 1976, 14.11 m (46.3 ft) NW of the
west corner of the Marina Base Exchange Building, 10.70 m (35.1 ft) SSE of the
east corner of building #2698, 0.40 m (1.3 ft) NW of the SE edge of the pad,
0.34 m (1.1 ft) NE of the SW edge of the pad, and 6 cm (0.2 ft) above ground
level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8729105 PUBLICATION DATE: 02/26/2004
Name: BEACON BEACH, ST ANDREW BAY
FL
NOAA Chart: 11391 Latitude: 30° 5.5' N ( 30.09170)
USGS Quad: BEACON BEACH Longitude: 85° 38.9' W ( -85.64830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9105 D 1976
DESIGNATION: 872 9105 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 9999
AGENCY: National Ocean Survey (NOS) IDB PID#: BE3017
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 5.6' N ( 30.09330) LONGITUDE: 85° 38.8' W ( -85.64670)
The bench mark is a disk located 86.11 m (282.5 ft) north of bench mark 9105 C
1976, 30 m (100 ft) ENE of the centerline of the paved drive leading to the
marina exchange parking lot, 5.49 m (18.0 ft) SSE of the centerline of Falcon
Street, and 0.67 m (2.2 ft) north of a powerline pole with a witnes sign. The
bench mark is set 9 cm (0.3 ft) below ground level, crimped to the top of a
copper-clad steel rod driven 12.2 m (40 ft) to refusal, and encased in a PVC
pipe and concrete kickblock.
BENCH MARK STAMPING: 9105 E 1976
DESIGNATION: 872 9105 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 10000
AGENCY: National Ocean Survey (NOS) IDB PID#: BE3016
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 5.6' N ( 30.09330) LONGITUDE: 85° 38.7' W ( -85.64500)
The bench mark is a disk located 145 m (476 ft) NE of bench mark 9105 D 1976,
34.59 m (113.5 ft) ESE of the centerline of Falcon Street, and 0.58 m (1.9 ft)
west of a powerline pole with a witness sign. The bench mark is set 9 cm (0.3
ft) below ground level, crimped to the top of a copper-clad steel rod driven 9.8
m (32 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: 8729105 PUBLICATION DATE: 02/26/2004
Name: BEACON BEACH, ST ANDREW BAY
FL
NOAA Chart: 11391 Latitude: 30° 5.5' N ( 30.09170)
USGS Quad: BEACON BEACH Longitude: 85° 38.9' W ( -85.64830)
T I D A L D A T U M S
Tidal datums at BEACON BEACH, ST ANDREW BAY based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: December 1983 - April 1984
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8729108 PANAMA CITY, ST. ANDREW BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (03/28/1984) = 0.772
MEAN HIGHER HIGH WATER MHHW = 0.402
MEAN HIGH WATER MHW = 0.388
MEAN TIDE LEVEL MTL = 0.203
MEAN SEA LEVEL MSL = 0.200
North American Vertical Datum NAVD88 = 0.166
MEAN LOW WATER MLW = 0.017
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (02/29/1984) = -0.554
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
9105 A 1976 1.101 0.713
9105 B 1976 0.673 0.285
9105 C 1976 1.333 0.945
9105 D 1976 1.867 1.479
9105 E 1976 6.204 5.816
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8729105 PUBLICATION DATE: 02/26/2004
Name: BEACON BEACH, ST ANDREW BAY
FL
NOAA Chart: 11391 Latitude: 30° 5.5' N ( 30.09170)
USGS Quad: BEACON BEACH Longitude: 85° 38.9' W ( -85.64830)
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.