U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
To reach the tide station from the intersection of US 98 and Santa Rosa Blvd in
Okaloosa, FL head east on US 98 for 0.56 km (0.35 mi) to the intersection with
Pier Rd on the right. Turn right onto Pier Rd and proceed south for 0.16 km
(0.10 mi) to the parking area for the Okaloosa Island Pier. Proceed southward
down the pier for 0.27 km (0.17 mi) to the tide station on the west handrail of
the pier. The bench marks are located within the Okaloosa Island Pier property
and along Santa Rosa Blvd.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: ARIUM 1956
DESIGNATION: ARIUM
MONUMENTATION: Triangulation Station disk VM#: 24051
AGENCY: US Coast and Geodetic Survey (USCGS) IDB PID#:
SETTING CLASSIFICATION: OPUS PID#: BG2082
LATITUDE: 30° 23.8' N ( 30.39614) LONGITUDE: 86° 35.8' W ( -86.59683)
The bench mark is a disk located 17.9 m (58.7 ft) east of concrete light pole
number 6, 14.8 m (48.6 ft) south of the center of the center turning lane of
Santa Rosa Boulevard, 1.4 m (4.6 ft) west of the west edge of a concrete
sidewalk, 1.3 m (4.3 ft) south of a concrete light pole number 5, and 24 cm (9
inches) north of a carsonite witness post. The mark is set in the top of a
concrete post recessed 1.1 m (3.6 ft) below the ground on the south side of
Santa Rosa Boulevard.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9547 A 2021
DESIGNATION: 872 9547 A
MONUMENTATION: Flange-encased Rod VM#: 24052
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: OPUS PID#: BBHP92
LATITUDE: 30° 23.7' N ( 30.39497) LONGITUDE: 86° 35.6' W ( -86.59297)
The bench mark is located 93.3 m (306.1 ft) south of the north end of the center
grass median of Pier Rd at the intersection of US 98 and Pier Rd, 82.9 m (272.0
ft) SSE of the SSE corner of the Gulfarium Marine Adventure Park sign along US
98, and 18.5 m (60.7 ft) WSW of the WSW wooden corner of a retention pond on
Pier Rd / US 98. The bench mark is a stainless steel rod encased in a 5-inch
logo cap, recessed 8 cm (3 inches) below the ground.
BENCH MARK STAMPING: 9547 B 2021
DESIGNATION: 872 9547 B
MONUMENTATION: Flange-encased Rod VM#: 24053
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 30° 23.7' N ( 30.39550) LONGITUDE: 86° 35.6' W ( -86.59292)
The bench mark is located 51.7 m (169.6 ft) east of the SSE corner of the
Gulfarium Marine Adventure Park sign along US 98, 26.5 m (86.9 ft) south of the
north end of center island of Pier Rd at the intersection of US 98 and Pier Rd,
and 21.6 m (70.9 ft) SW of the Anglers Beach Grill sign along US 98. The bench
mark is a stainless-steel rod encased in a 5-inch logo cap, recessed 8 cm (3
inches) below the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9547 C 2021
DESIGNATION: 872 9547 C
MONUMENTATION: Tidal Station disk VM#: 24054
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 30° 23.7' N ( 30.39478) LONGITUDE: 86° 35.5' W ( -86.59231)
The bench mark is located 61.0 m (200.1 ft) NNE of the NW corner of the Okaloosa
County Sheriffs office along the beach, 53.0 m (173.9 ft) SE of the WSW wooden
corner of a retention pond located on Pier Rd / US 98, 19.2 m (63.0 ft) WSW of
the center of the concrete spillway on the south side of the retention pond, and
10 cm (4 inches) NW of the NW corner of the bus stop metal structure.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: P016 1991
DESIGNATION: P016
MONUMENTATION: Flange-encased Rod VM#: 24055
AGENCY: Okaloosa County IDB PID#:
SETTING CLASSIFICATION: OPUS PID#: BG5041
LATITUDE: 30° 23.8' N ( 30.39664) LONGITUDE: 86° 36.0' W ( -86.59950)
The bench mark is located 7.4 m (24.3 ft) west of a wooden power pole with one
street light attached, 4.0 m (13.1 ft) WSW of a fire hydrant, 2.1 m (6.9 ft) SE
of the SE edge of a storm drain and 27 cm (11 inches) NW of the NW edge of a
concrete sidewalk. The mark is an aluminum rod encased in a 5-inch (13 cm) logo
cap,
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
T I D A L D A T U M S
Tidal datums at OKALOOSA ISLAND based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: December 2021 - February 2022
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8729210 PANAMA CITY BEACH, GULF OF MEXICO
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.426
MEAN HIGH WATER MHW = 0.399
MEAN TIDE LEVEL MTL = 0.210
MEAN SEA LEVEL MSL = 0.202
North American Vertical Datum NAVD88 = 0.153
MEAN LOW WATER MLW = 0.020
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
ARIUM 1956 2.222 1.823
9547 A 2021 2.332 1.933
9547 B 2021 2.114 1.715
9547 C 2021 2.982 2.583
P016 1991 1.484 1.085
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8729547 PUBLICATION DATE: 07/12/2022
Name: OKALOOSA ISLAND
FL
NOAA Chart: 11385 Latitude: 30° 23.5' N ( 30.39136)
USGS Quad: FORT WALTON BEACH Longitude: 86° 35.6' W ( -86.59319)
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.