U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 08/14/1991
Station ID: 8729149 SUPERCEDED DATE: 04/21/2003
Name: ST. ANDREWS STATE PARK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11391 Latitude: 30° 7.8' N
USGS Quad: PANAMA CITY Longitude: 85° 44.6' W
To reach the tidal bench marks from the west end of Hathaway Bridge (west of
Panama City), proceed west on U.S. Highway 98 for 0.6 mile (1.0 km) to Thomas
Drive, then south on Thomas Drive, for 3.6 miles (5.8 km) to a road fork, bear
left and go 0.4 mile (0.6 km) to the entrance of St. Andrews State Park, then
continue to the first road past the park office, turn right and follow road to
the fishing pier. The bench marks are in the area near the pier and along the
park road. The tide gauge and staff were located on the offshore end of the
pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9149 A 1978
MONUMENTATION: Survey Disk VM#: 10024
AGENCY: PID#: BE2991
SETTING CLASSIFICATION: Concrete Slab
The primary bench mark is set in the concrete floor at the NW corner of the
westerly of two picnic shelters near the inner end of the pier, 1.4 foot (0.4 m)
south of the NW roof support column, and 0.4 foot (0.1 m) east of the SW edge of
the shelter floor.
BENCH MARK STAMPING: PARK 1956 (AZI)
MONUMENTATION: Survey Disk VM#: 10019
AGENCY: PID#: BE0765
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in the top of a concrete monument, 192.0 feet (58.5 m)
south of the center of the entrance gate to the state park, 59.0 feet (18.0 m)
west of the west corner of the carport of a concrete block house, 3.0 feet (0.9
m) NE of a white wooden witness post, and 0.4 foot (0.1 m) above ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
PUBLICATION DATE: 08/14/1991
Station ID: 8729149 SUPERCEDED DATE: 04/21/2003
Name: ST. ANDREWS STATE PARK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11391 Latitude: 30° 7.8' N
USGS Quad: PANAMA CITY Longitude: 85° 44.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PARK NO 1 1956
MONUMENTATION: Survey Disk VM#: 10020
AGENCY: PID#: BE0767
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in the top of a concrete monument, 152.0 feet (46.3 m) NNW
of the centerline of the park road, 85.0 feet (25.9 m) SW of the centerline of
the paved road to the camping area, 84.3 feet (25.7 m) NW of triangulation
station PARK 1956 1977, 9 feet (3 m) above the level of the road, and 0.4 foot
(0.1 m) above ground level.
BENCH MARK STAMPING: R 93 1971
MONUMENTATION: Survey Disk VM#: 10021
AGENCY: PID:
SETTING CLASSIFICATION: Concrete Post
The bench mark is at the St. Andrews State Park, 91.6 feet (27.9 m) ESE of a
green fire hydrant, 49.0 feet (14.9 m) easterly of the centerline of road
leading to the parking area and 17.2 feet (5.2 m) SE of power pole No.
60786-41369, the most southerly of a line of poles, set into the top of a 0.5
foot (0.2 m) square concrete post projecting 0.8 foot (0.2 m) above ground
level.
BENCH MARK STAMPING: PARK 1956 1977
MONUMENTATION: Survey Disk VM#: 10022
AGENCY: PID#: BE1759
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in the top of a concrete monument, 0.25 mile (0.40 km) NE
along the road from the park office and entrance, 79.0 feet (24.1 m) NNW of the
centerline of the road, 44.0 feet (13.4 m) north of a powerline pole, 6.0 feet
(1.8 m) south of a witness post, and 0.2 foot (0.06 m) above ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
PUBLICATION DATE: 08/14/1991
Station ID: 8729149 SUPERCEDED DATE: 04/21/2003
Name: ST. ANDREWS STATE PARK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11391 Latitude: 30° 7.8' N
USGS Quad: PANAMA CITY Longitude: 85° 44.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: PARK NO 3 1977
MONUMENTATION: Survey Disk VM#: 10023
AGENCY: PID#: BE1327
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in the top of a concrete monument 57.0 feet (17.4 m) west
of a buried cable pedestal, 53.0 feet (16.2 m) north of the centerline of the
park road, 51.0 feet (15.5 m) ENE of a powerline pole, 40.6 feet (12.4 m) ESE of
triangulation station PARK 1956 1977, 8 feet (2 m) above the level of the road,
and 0.3 foot (0.1 m) above ground level.
BENCH MARK STAMPING: 9149 B 1978
MONUMENTATION: Survey Disk VM#: 10025
AGENCY: PID#: BE2990
SETTING CLASSIFICATION: Concrete Slab
The bench mark is set in the top of the west corner of the concrete flooring of
the bathhouse, 2.0 feet (0.6 m) NE of the west corner of the roof support
column, and 1.0 foot (0.3 m) SE of the NW face of the foundation slab.
BENCH MARK STAMPING: 9149 C
MONUMENTATION: Survey Disk VM#: 10026
AGENCY: PID#: BE2989
SETTING CLASSIFICATION: Concrete Base
The bench mark is set in the top of the concrete base for a storage tank, 85.5
feet (26.1 m) ENE of powerline pole #4, 58.3 feet (17.8 m) NE of the junction of
the road and the entrance to the pier parking lot, 5.3 feet (1.6 m) NW of the SE
corner of the base, 2.9 feet (0.9 m) SE of the south corner of the raised tank
support, and 4.8 feet (1.5 m) west of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
PUBLICATION DATE: 08/14/1991
Station ID: 8729149 SUPERCEDED DATE: 04/21/2003
Name: ST. ANDREWS STATE PARK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11391 Latitude: 30° 7.8' N
USGS Quad: PANAMA CITY Longitude: 85° 44.6' W
T I D A L D A T U M S
Tidal datums at ST. ANDREWS STATE PARK, GULF OF MEXICO based on:
LENGTH OF SERIES: 6 MONTHS
TIME PERIOD: MARCH - NOVEMBER 1980
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8729840 PENSACOLA
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (05/17/1980) = 4.30
MEAN HIGHER HIGH WATER MHHW = 1.56
MEAN HIGH WATER MHW = 1.44
MEAN TIDE LEVEL MTL = 0.74
* NATIONAL GEODETIC VERTICAL DATUM NGVD29 = 0.28
MEAN LOW WATER MLW = 0.04
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (03/03/1980) = -1.40
* NGVD is based on elevations published in QUAD 300853, December 1980 and NOS
leveling of 1984.
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
9149 A 1978 19.11 17.67
PARK 1956 (AZI) 16.59 15.15
PARK NO 1 1956 20.27 18.83
R 93 1971 16.86 15.42
PARK 1956 1977 23.21 21.77
PARK NO 3 1977 18.61 17.17
9149 B 1978 19.12 17.68
9149 C 14.96 13.52
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 08/14/1991
Station ID: 8729149 SUPERCEDED DATE: 04/21/2003
Name: ST. ANDREWS STATE PARK, GULF OF MEXICO
FLORIDA
NOAA Chart: 11391 Latitude: 30° 7.8' N
USGS Quad: PANAMA CITY Longitude: 85° 44.6' 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 (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 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.