U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8729155 PUBLICATION DATE: 05/28/2004
Name: GRAND LAGOON, WEST END
FL
NOAA Chart: 11391 Latitude: 30° 9.5' N ( 30.15830)
USGS Quad: PANAMA CITY BEACH Longitude: 85° 46.1' W ( -85.76830)
To reach the tidal bench marks from the west end of the Hathaway Bridge over St.
Andrews Bay, proceed west on U.S. Highway 98 for 1.1 km (0.7 mi) to Thomas
Drive, then south on Thomas Drive for 4.6 km (2.9 mi) to North Lagoon Drive,
then 1.8 km (1.1 mi) NW on North Lagoon Drive to the Palisades Condominiums.
The bench marks are along North Lagoon Drive. The tide gage and staff were
located just north of the pool on a dock at the condominiums.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9155 A 1976
DESIGNATION: 872 9155 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 10034
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2994
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 30° 9.5' N ( 30.15830) LONGITUDE: 85° 45.7' W ( -85.76170)
The primary bench mark is a disk located 50.72 m (166.4 ft) SE of the drive
leading into the Palisades condominium complex, 26.79 m (87.9 ft) east of the NE
corner of apartment building No. 23, 13.35 m (43.8 ft) WSW of the centerline of
North Lagoon Drive and 2.56 m (8.4 ft) NNW of a power pole with a witness sign.
The bench mark is set 0.12 m (0.4 ft) below ground level, crimped to the top of
a copper-coated steel rod driven 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 2 of 5
Station ID: 8729155 PUBLICATION DATE: 05/28/2004
Name: GRAND LAGOON, WEST END
FL
NOAA Chart: 11391 Latitude: 30° 9.5' N ( 30.15830)
USGS Quad: PANAMA CITY BEACH Longitude: 85° 46.1' W ( -85.76830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9155 B 1976
DESIGNATION: 872 9155 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 10035
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2992
SETTING CLASSIFICATION: Concrete culvert head wall OPUS PID:
LATITUDE: 30° 9.5' N ( 30.15830) LONGITUDE: 85° 45.5' W ( -85.75830)
The bench mark is a disk set in the top of a concrete culvert head wall, 0.3 km
(0.2 mi) SE of the Palisades Condominiums, 7.80 m (25.6 ft) NE of the centerline
of North Lagoon Drive, 1.22 m (4.0 ft) west of the SE end of the culvert head
wall, and 0.61 m (2.0 ft) below the level of the road.
BENCH MARK STAMPING: 9155 C 1976
DESIGNATION: 872 9155 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 10036
AGENCY: National Ocean Survey (NOS) IDB PID#: BE2995
SETTING CLASSIFICATION: Concrete culvert head wall OPUS PID:
LATITUDE: 30° 9.6' N ( 30.16000) LONGITUDE: 85° 45.8' W ( -85.76330)
The bench mark is a disk set in the top of a concrete culvert head wall, 0.5 km
(0.3 mi) NW of bench mark 9155 B 1976, 5.52 m (18.1 ft) north of the centerline
of North Lagoon Boulevard, 0.52 m (1.7 ft) SE of the NW end of the head wall,
and 0.61 m (2.0 ft) below the level of the road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8729155 PUBLICATION DATE: 05/28/2004
Name: GRAND LAGOON, WEST END
FL
NOAA Chart: 11391 Latitude: 30° 9.5' N ( 30.15830)
USGS Quad: PANAMA CITY BEACH Longitude: 85° 46.1' W ( -85.76830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9155 D 1984
DESIGNATION: 872 9155 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 10037
AGENCY: National Ocean Service (NOS) IDB PID#: BE2993
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 30° 9.5' N ( 30.15830) LONGITUDE: 85° 45.6' W ( -85.76000)
The bench mark is a disk set in the top of a concrete monument, 0.2 km (0.1 mi)
NW of bench mark 9155 B 1976, 13.56 m (44.5 ft) NE of the centerline of North
Lagoon Drive, 91 m (300 ft) NW of the centerline of Courtney Drive, 0.76 m (2.5
ft) SE of a powerline pole #60161-42346, 0.40 m (1.3 ft) SW of a witness post,
and 6 cm (0.2 ft) below ground level.
BENCH MARK STAMPING: 9155 E 1984
DESIGNATION: 872 9155 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 10038
AGENCY: National Ocean Service (NOS) IDB PID#: BE2996
SETTING CLASSIFICATION: Concrete culvert head wall OPUS PID:
LATITUDE: 30° 9.7' N ( 30.16170) LONGITUDE: 85° 46.0' W ( -85.76670)
The bench mark is a disk set in the top of a concrete culvert head wall, 0.3 km
(0.2 mi) NW of bench mark 9155 C 1976, 5.91 m (19.4 ft) SW of the centerline of
North Lagoon Drive, 45.11 m (148.0 ft) SE of the centerline of O'Henry Drive,
9.14 m (30.0 ft) NW of the centerline of the driveway to house # 7201 North
Lagoon Drive, and 0.3 m (1 ft) below the level of the road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8729155 PUBLICATION DATE: 05/28/2004
Name: GRAND LAGOON, WEST END
FL
NOAA Chart: 11391 Latitude: 30° 9.5' N ( 30.15830)
USGS Quad: PANAMA CITY BEACH Longitude: 85° 46.1' W ( -85.76830)
T I D A L D A T U M S
Tidal datums at GRAND LAGOON, WEST END based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: October 1976 - October 1976
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:
MEAN HIGHER HIGH WATER MHHW = 0.392
MEAN HIGH WATER MHW = 0.378
MEAN SEA LEVEL MSL = 0.197
MEAN TIDE LEVEL MTL = 0.196
North American Vertical Datum NAVD88 = 0.159
MEAN LOW WATER MLW = 0.014
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
9155 A 1976 2.968 2.590
9155 B 1976 1.839 1.461
9155 C 1976 3.348 2.970
9155 D 1984 2.829 2.451
9155 E 1984 3.315 2.937
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8729155 PUBLICATION DATE: 05/28/2004
Name: GRAND LAGOON, WEST END
FL
NOAA Chart: 11391 Latitude: 30° 9.5' N ( 30.15830)
USGS Quad: PANAMA CITY BEACH Longitude: 85° 46.1' W ( -85.76830)
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.