U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8725235 PUBLICATION DATE: 06/02/2003
Name: WIGGINS PASS, INSIDE
FL
NOAA Chart: 11430 Latitude: 26° 17.4' N ( 26.29000)
USGS Quad: NAPLES SOUTH Longitude: 81° 49.1' W ( -81.81830)
To reach the tidal bench marks, proceed south on U.S. Highway 41 through Bonita
Springs to the intersection with County Road C865, then 4.0 km (2.5 mi) west
along C865 to the intersection with State Highway S901, then 4.3 km (2.7 mi)
south on S901 to the south end of the northern span of bridge over the
Cocohatchee River. The bench marks are located in the area of the bridge. The
tide gage was located under the south end of the bridge.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 5235 B 1977
DESIGNATION: 872 5235 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 10594
AGENCY: National Ocean Survey (NOS) IDB PID#: AD6303
SETTING CLASSIFICATION: Galvanized steel rod OPUS PID:
LATITUDE: 26° 17.4' N ( 26.29000) LONGITUDE: 81° 49.1' W ( -81.81830)
The primary bench mark is a disk located NE of the southern bridge span of State
Highway S901 over Wiggins Pass, 12.62 m (41.4 ft) north of the NE corner of the
southern bridge span, 4 m (14 ft) east of the centerline of State Highway S-901,
and 0.21 m (0.7 ft) west of a witness post. The bench mark is set flush with
the ground, crimped to the top of a galvanized 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: 8725235 PUBLICATION DATE: 06/02/2003
Name: WIGGINS PASS, INSIDE
FL
NOAA Chart: 11430 Latitude: 26° 17.4' N ( 26.29000)
USGS Quad: NAPLES SOUTH Longitude: 81° 49.1' W ( -81.81830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 5235 C 1977
DESIGNATION: 872 5235 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 10595
AGENCY: National Ocean Survey (NOS) IDB PID#: AD6302
SETTING CLASSIFICATION: Concrete abutment OPUS PID:
LATITUDE: 26° 17.4' N ( 26.29000) LONGITUDE: 81° 49.1' W ( -81.81830)
The bench mark is a disk set flush in concrete abutment at the NW corner of the
southern bridge span of State Highway S901 over Wiggins Pass, 16 m (52 ft) SW of
bench mark 5235 B 1977, 4 m (14 ft) west of the centerline of State Highway
S-901, and 0.28 m (0.9 ft) east of the west face of the bridge abutment.
BENCH MARK STAMPING: 5235 D 1978
DESIGNATION: 872 5235 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 10596
AGENCY: National Ocean Survey (NOS) IDB PID#: AD6305
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID:
LATITUDE: 26° 17.5' N ( 26.29170) LONGITUDE: 81° 49.1' W ( -81.81830)
The bench mark is a disk set flush in the south bulkhead under the northern
bridge span of State Highway S901 over Wiggins Pass, 14 m (46 ft) east of the
centerline of State Highway S-901, 10 m (32 ft) east of bench mark S.R.D.15.94,
and 4.54 m (14.9 ft) south of the north face of the wingwall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8725235 PUBLICATION DATE: 06/02/2003
Name: WIGGINS PASS, INSIDE
FL
NOAA Chart: 11430 Latitude: 26° 17.4' N ( 26.29000)
USGS Quad: NAPLES SOUTH Longitude: 81° 49.1' W ( -81.81830)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: ELV. 8.88
DESIGNATION: 8.88
MONUMENTATION: Survey disk VM#: 10597
AGENCY: Florida Highway Department (FLHD) IDB PID#: AD6301
SETTING CLASSIFICATION: Concrete abutment OPUS PID:
LATITUDE: 26° 17.4' N ( 26.29000) LONGITUDE: 81° 49.1' W ( -81.81830)
The bench mark is a disk set flush in the concrete abutment at the SE corner of
the southern bridge span of State Highway S-901 over Wiggins Pass, 31 m (102 ft)
SE of bench mark 5235 C 1977, 4.28 m (14.0 ft) east of the centerline of State
Highway S-901, and 0.40 m (1.3 ft) west of the east face of the bridge abutment.
BENCH MARK STAMPING: S.R.D. 15.94
DESIGNATION: 15.94
MONUMENTATION: Survey disk VM#: 10598
AGENCY: Florida Highway Department (FLHD) IDB PID#: AD6304
SETTING CLASSIFICATION: Concrete bridge abutment OPUS PID:
LATITUDE: 26° 17.5' N ( 26.29170) LONGITUDE: 81° 49.1' W ( -81.81830)
The bench mark is a disk set flush in a concrete abutment in the SE corner of
the northern bridge span of State Highway S901 over Wiggins Pass, 115.21 m
(378.0 ft) north of bench mark 5235 B 1977, 4 m (14 ft) east of the centerline
of State Highway S-901, and 0.30 m (1 ft) west of the SW end of the guardrail.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8725235 PUBLICATION DATE: 06/02/2003
Name: WIGGINS PASS, INSIDE
FL
NOAA Chart: 11430 Latitude: 26° 17.4' N ( 26.29000)
USGS Quad: NAPLES SOUTH Longitude: 81° 49.1' W ( -81.81830)
T I D A L D A T U M S
Tidal datums at WIGGINS PASS, INSIDE based on:
LENGTH OF SERIES: 1 YEAR
TIME PERIOD: December 1977 - November 1978
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:
HIGHEST OBSERVED WATER LEVEL (01/09/1978) = 0.953
MEAN HIGHER HIGH WATER MHHW = 0.688
MEAN HIGH WATER MHW = 0.618
North American Vertical Datum NAVD88 = 0.532
MEAN SEA LEVEL MSL = 0.385
MEAN TIDE LEVEL MTL = 0.376
MEAN LOW WATER MLW = 0.134
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/11/1978) = -0.364
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
5235 B 1977 2.885 2.267
5235 C 1977 3.045 2.427
5235 D 1978 1.336 0.718
ELV. 8.88 2.858 2.240
S.R.D. 15.94 4.992 4.374
Foot Notes:
Bench mark 5235 D 1977 is based on one differential leveling connection and does
not meet the quality control standards of the NOS. Therefore, caution should be
used when deriving elevations for this mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8725235 PUBLICATION DATE: 06/02/2003
Name: WIGGINS PASS, INSIDE
FL
NOAA Chart: 11430 Latitude: 26° 17.4' N ( 26.29000)
USGS Quad: NAPLES SOUTH Longitude: 81° 49.1' W ( -81.81830)
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.