U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 4
Station ID: 8721415 PUBLICATION DATE: 07/27/2007
Name: EDDY CREEK, MOSQUITO LAGOON
FL
NOAA Chart: 11484 Latitude: 28° 40.6' N ( 28.67670)
USGS Quad: WILSON Longitude: 80° 39.0' W ( -80.65000)
To reach the tidal bench marks from the junction of U.S. Highway 1 and State
Highway 401/402 in Titusville, proceed east on State Highway 401/402 for 19.8 km
(12.3 mi) to a narrow paved road, then NW on the paved road for 4.3 km (2.7 mi)
to a narrow sand road, and then west on the sand road for 0.2 km (0.1 mi) to a
wooden pier at Eddy Creek. The bench marks are along the narrow sand road and
among the sand banks between the paved road and the ocean. The tide gage and
staff were on the wooden pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 1 1970
DESIGNATION: 872 1415 TIDAL 1
MONUMENTATION: Survey disk VM#: 5329
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK0816
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 40.6' N ( 28.67670) LONGITUDE: 80° 39.0' W ( -80.65000)
The primary bench mark is a disk set in a concrete monument at the west end of
the sand road leading to the wooden pier, 2.13 m (7.0 ft) SW of the sand road,
0.76 m (2.5 ft) east of the east end of the wooden pier, and 0.61 m (2.0 ft)
south of a wooden witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 4
Station ID: 8721415 PUBLICATION DATE: 07/27/2007
Name: EDDY CREEK, MOSQUITO LAGOON
FL
NOAA Chart: 11484 Latitude: 28° 40.6' N ( 28.67670)
USGS Quad: WILSON Longitude: 80° 39.0' W ( -80.65000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 3 1970
DESIGNATION: 872 1415 TIDAL 3
MONUMENTATION: Survey disk VM#: 5330
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK0817
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 40.6' N ( 28.67670) LONGITUDE: 80° 39.0' W ( -80.65000)
The bench mark is a disk set in a concrete monument on the south side of the
sand road leading to the wooden pier, 11.73 m (38.5 ft) SW of the centerline of
the paved road, 9.91 m (32.5 ft) SE of the sand road, 0.55 m (1.8 ft) north of a
witness post, 0.3 m (1 ft) below road level, and 0.06 m (0.2 ft) above grade.
BENCH MARK STAMPING: NO 4 1970
DESIGNATION: 872 1415 TIDAL 4
MONUMENTATION: Survey disk VM#: 5331
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: AK0818
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 28° 40.6' N ( 28.67670) LONGITUDE: 80° 39.0' W ( -80.65000)
The bench mark is a disk set in a concrete monument near the junction of two
indistinct sand roads in the sand banks between the paved road and the ocean,
0.2 km (0.1 mi) SE of the junction of the paved road and the sand road leading
to the wooden pier, 30.63 m (100.5 ft) NE of the centerline of the paved road,
11 m (36 ft) SE of the centerline of a sand road leading NE to the ocean, 9.30 m
(30.5 ft) NE of the centerline of a sand road, 0.46 m (1.5 ft) north of a wooden
witness post with sign, and 1.22 m (4.0 ft) above road level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 4
Station ID: 8721415 PUBLICATION DATE: 07/27/2007
Name: EDDY CREEK, MOSQUITO LAGOON
FL
NOAA Chart: 11484 Latitude: 28° 40.6' N ( 28.67670)
USGS Quad: WILSON Longitude: 80° 39.0' W ( -80.65000)
T I D A L D A T U M S
Tidal datums at EDDY CREEK, MOSQUITO LAGOON based on:
LENGTH OF SERIES: 7 MONTHS
TIME PERIOD: December 1970 - June 1971
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8723170 MIAMI BEACH (CITY PIER)
Elevations of tidal datums referred to Mean Sea Level (MSL), in METERS:
North American Vertical Datum NAVD88 = 0.214
MEAN SEA LEVEL MSL = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MSL
NO 1 1970 0.642
NO 3 1970 1.217
NO 4 1970 2.620
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 4
Station ID: 8721415 PUBLICATION DATE: 07/27/2007
Name: EDDY CREEK, MOSQUITO LAGOON
FL
NOAA Chart: 11484 Latitude: 28° 40.6' N ( 28.67670)
USGS Quad: WILSON Longitude: 80° 39.0' W ( -80.65000)
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.