U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8725346 PUBLICATION DATE: 02/05/2004
Name: ESTERO RIVER, ESTERO BAY
FL
NOAA Chart: 11426 Latitude: 26° 25.8' N ( 26.43000)
USGS Quad: ESTERO Longitude: 81° 51.4' W ( -81.85670)
To reach the tidal bench marks from the boat ramp at Koreshan State Park,
proceed by boat west and south on Estero River for 6 km (4 mi) to the mouth of
Estero River. The bench marks are on the mangrove islands at the mouth of the
river. The tide gage and staff were on a small free standing platform on the
north side of the river channel.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 5346 A 1989
DESIGNATION: 872 5346 A
MONUMENTATION: Tidal Station disk VM#: 8030
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 26° 25.9' N ( 26.43170) LONGITUDE: 81° 51.4' W ( -81.85670)
The primary bench mark is a disk located on the southernmost of three mangrove
islands, near the NW edge of the foliage, and 0.4 m (1.3 ft) NE of a witness
post. The bench mark is crimped to the top of a stainless steel rod driven 26.5
m (87 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 2 of 5
Station ID: 8725346 PUBLICATION DATE: 02/05/2004
Name: ESTERO RIVER, ESTERO BAY
FL
NOAA Chart: 11426 Latitude: 26° 25.8' N ( 26.43000)
USGS Quad: ESTERO Longitude: 81° 51.4' W ( -81.85670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 5346 B 1989
DESIGNATION: 872 5346 B
MONUMENTATION: Tidal Station disk VM#: 8031
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 26° 25.9' N ( 26.43170) LONGITUDE: 81° 51.4' W ( -81.85670)
The bench mark is a disk located on the southernmost of three mangrove islands,
35 m (115 ft) east of bench mark 5346 A 1989, 10 m (33 ft) inside the foliage
from the north and east edges of the island, and 0.40 m (1.3 ft) north of a
witness post. The bench mark is crimped to the top of a stainless steel rod
driven 31.4 m (103 ft) to refusal, and encased in a PVC pipe and concrete
kickblock.
BENCH MARK STAMPING: 5346 C 1989
DESIGNATION: 872 5346 C
MONUMENTATION: Tidal Station disk VM#: 8032
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 26° 25.9' N ( 26.43170) LONGITUDE: 81° 51.4' W ( -81.85670)
The bench mark is a disk located on the northernmost of three mangrove islands,
20 m (66 ft) north of the river's edge, and 0.21 m (0.7 ft) south of a witness
post. The bench mark is crimped to the top of a stainless steel rod driven 25.0
m (82 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 3 of 5
Station ID: 8725346 PUBLICATION DATE: 02/05/2004
Name: ESTERO RIVER, ESTERO BAY
FL
NOAA Chart: 11426 Latitude: 26° 25.8' N ( 26.43000)
USGS Quad: ESTERO Longitude: 81° 51.4' W ( -81.85670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 5346 D 1989
DESIGNATION: 872 5346 D
MONUMENTATION: Tidal Station disk VM#: 8033
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 26° 25.9' N ( 26.43170) LONGITUDE: 81° 51.4' W ( -81.85670)
The bench mark is a disk located on the northernmost of three mangrove islands,
just over a small dune at the east end of the island, 20 m (66 ft) SE of bench
mark 5346 C 1989, and 0.40 m (1.3 ft) south of a witness post. The bench mark is
crimped to the top of a stainless steel rod driven 24.1 m (79 ft) to refusal,
and encased in a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: 5346 E 1989
DESIGNATION: 872 5346 E
MONUMENTATION: Tidal Station disk VM#: 8034
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 26° 25.9' N ( 26.43170) LONGITUDE: 81° 51.4' W ( -81.85670)
The bench mark is a disk located on the easternmost of three mangrove islands,
near the NE edge of the island, and 0.4 m (1.3 ft) north of a witness post. The
bench mark is crimped to the top of a stainless steel rod driven 11.9 m (39 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: 8725346 PUBLICATION DATE: 02/05/2004
Name: ESTERO RIVER, ESTERO BAY
FL
NOAA Chart: 11426 Latitude: 26° 25.8' N ( 26.43000)
USGS Quad: ESTERO Longitude: 81° 51.4' W ( -81.85670)
T I D A L D A T U M S
Tidal datums at ESTERO RIVER, ESTERO BAY based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: May 1989 - September 1989
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8725110 NAPLES, GULF OF MEXICO
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.746
MEAN HIGH WATER MHW = 0.659
MEAN TIDE LEVEL MTL = 0.394
MEAN SEA LEVEL MSL = 0.394
MEAN LOW WATER MLW = 0.128
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
5346 A 1989 0.943 0.284
5346 B 1989 0.699 0.040
5346 C 1989 0.683 0.024
5346 D 1989 0.849 0.190
5346 E 1989 0.646 -0.013
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8725346 PUBLICATION DATE: 02/05/2004
Name: ESTERO RIVER, ESTERO BAY
FL
NOAA Chart: 11426 Latitude: 26° 25.8' N ( 26.43000)
USGS Quad: ESTERO Longitude: 81° 51.4' W ( -81.85670)
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.