U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 4
PUBLICATION DATE: 12/09/1987
Station ID: 8721994 SUPERCEDED DATE: 04/21/2003
Name: MICCO, INDIAN RIVER
FLORIDA
NOAA Chart: 11476 Latitude: 27° 52.4' N
USGS Quad: SEBASTIAN Longitude: 80° 29.8' W
To reach the tidal bench marks from the north end of the U.S. Highway 1 bridge
over Sebastian Creek, proceed 1.33 miles (2.14 km) north on U.S. Highway 1 to
the Summit Landings. The bench marks are in the vicinity of the Summit Landings
marina. The tide gage and staff were located on the wooden fuel pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 2 1972
MONUMENTATION: Survey Disk VM#: 5389
AGENCY: PID#: AF6811
SETTING CLASSIFICATION: Sign Base
The bench mark is set into the base of a Standard Oil sign, 28.8 feet (8.8 m)
east of the centerline of the northbound land of U.S. Highway 1, 22.5 feet (6.9
m) north of the centerline of the drive leading east to the Summit Landings, and
0.9 foot (0.3 m) ESE of the metal pole supporting the sign.
BENCH MARK STAMPING: NO 1 1972
MONUMENTATION: Survey Disk VM#: 5388
AGENCY: PID#: AF6814
SETTING CLASSIFICATION: Concrete Pier
The bench mark is set flush in the L section of the east end of the concrete
portion of the NE fuel pier, 128.7 feet (39.2 m) east of the junction of the
pier with the bulkhead, 7.5 feet (2.3 m) north of the south edge of the pier,
and 0.6 foot (0.2 m) south of the north edge of the L. Note: The bulkhead is
now covered by a wooden walkway and the bench mark is inaccessible.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 4
PUBLICATION DATE: 12/09/1987
Station ID: 8721994 SUPERCEDED DATE: 04/21/2003
Name: MICCO, INDIAN RIVER
FLORIDA
NOAA Chart: 11476 Latitude: 27° 52.4' N
USGS Quad: SEBASTIAN Longitude: 80° 29.8' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 4 1972
MONUMENTATION: Survey Disk VM#: 5390
AGENCY: PID#: AF6812
SETTING CLASSIFICATION: Concrete Seawall
The bench mark is set flush in the concrete seawall on the north side of the
Summit Landings restaurant, 90.6 feet (27.6 m) WNW of Bench Mark NO 5 1972, 45.3
feet (13.8 m) NW of the NW corner of the restaurant, 15.6 feet (4.8 m) east of
the west end of the seawall, and 4.0 feet (1.2 m) NW of a telephone pole.
BENCH MARK STAMPING: NO 5 1972
MONUMENTATION: Survey Disk VM#: 5391
AGENCY: PID#: AF6813
SETTING CLASSIFICATION: Concrete Seawall
The bench mark is set flush in the concrete seawall on the east side of the
Summit Landings restaurant, 131.0 feet (39.9 m) WSW of Bench Mark NO 1 1972,
14.0 feet (4.3 m) NE of the NE corner of the restaurant, and 6.0 feet (1.8 m)
south of the NE corner of the seawall. Note: The bulkhead seawall is now
covered by a wooden walkway and the bench mark is inaccessible.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 4
PUBLICATION DATE: 12/09/1987
Station ID: 8721994 SUPERCEDED DATE: 04/21/2003
Name: MICCO, INDIAN RIVER
FLORIDA
NOAA Chart: 11476 Latitude: 27° 52.4' N
USGS Quad: SEBASTIAN Longitude: 80° 29.8' W
T I D A L D A T U M S
Tidal datums at MICCO, INDIAN RIVER based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: APRIL 1972
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8722029 SEBASTIAN, INDIANRIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (04/26/1972) = 1.14
MEAN HIGHER HIGH WATER MHHW = 0.40
MEAN HIGH WATER MHW = 0.34
MEAN TIDE LEVEL MTL = 0.21
MEAN LOW WATER MLW = 0.08
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (04/15/1972) = -0.57
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
NO 2 1972 13.21 12.87
NO 1 1972 3.16 2.82
NO 4 1972 4.38 4.04
NO 5 1972 3.28 2.94
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 4
PUBLICATION DATE: 12/09/1987
Station ID: 8721994 SUPERCEDED DATE: 04/21/2003
Name: MICCO, INDIAN RIVER
FLORIDA
NOAA Chart: 11476 Latitude: 27° 52.4' N
USGS Quad: SEBASTIAN Longitude: 80° 29.8' W
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 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.