U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 4
PUBLICATION DATE: 12/01/1986
Station ID: 8722059 SUPERCEDED DATE: 04/21/2003
Name: WABASSO, INDIAN RIVER
FLORIDA
NOAA Chart: 11474 Latitude: 27° 45.3' N
USGS Quad: VERO BEACH Longitude: 80° 25.6' W
To reach the tidal bench marks from the intersection of U.S. Highway 1 and State
Road 510 in Wabasso, proceed 0.75 mile (1.21 km) NE on State Road 510 to the
west end of the second bridge span over Indian River. The bench marks are
located on the bridge wingwall and the bridge. The tide gage and staff were
located on the adjacent fishing catwalk.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: K 306 1970
MONUMENTATION: Survey Disk VM#: 5405
AGENCY: PID#: AF3457
SETTING CLASSIFICATION: Concrete Guardrail Base
The bench mark is set in the top of the west end of the concrete base for the
north guardrail of the second bridge span over Indian River, 17.5 feet (5.3 m)
north of the centerline of State Road 510, and 1 foot (0.3 m) above the road
surface.
BENCH MARK STAMPING: NO 1 1972
MONUMENTATION: Survey Disk VM#: 5406
AGENCY: PID#: AF6799
SETTING CLASSIFICATION: Concrete Bridge Wingwall
The bench mark is set flush in the top of the south wingwall of the SW abutment,
132.5 feet (40.4 m) SW of the abutment, 78.2 feet (23.8 m) south of the
centerline of State Road 510, and 4.0 feet (1.2 m) NE of the SW end of the
wingwall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 4
PUBLICATION DATE: 12/01/1986
Station ID: 8722059 SUPERCEDED DATE: 04/21/2003
Name: WABASSO, INDIAN RIVER
FLORIDA
NOAA Chart: 11474 Latitude: 27° 45.3' N
USGS Quad: VERO BEACH Longitude: 80° 25.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 2 1972
MONUMENTATION: Survey Disk VM#: 5407
AGENCY: PID#: AF6798
SETTING CLASSIFICATION: Concrete Bridge Wingwall
The bench mark is set flush in the SE corner of the south wingwall, 138.7 feet
(42.3 m) east of Bench Mark NO 1 1972, 55.0 feet (16.8 m) south of Bench Mark NO
3 1972, and 39.6 feet (12.1 m) south of the south side of the concrete fishing
catwalk below the bridge.
BENCH MARK STAMPING: NO 3 1972
MONUMENTATION: Survey Disk VM#: 5408
AGENCY: PID#: AF6797
SETTING CLASSIFICATION: Concrete Bridge Wingwall
The bench mark is set flush in the east wingwall of the SW bridge abutment, 55.0
feet (16.8 m) north of Bench Mark NO 2 1972, 31.5 feet (9.6 m) SE of the SW
corner of the bridge, and 12.0 feet (3.7 m) north of the centerline of the
concrete fishing catwalk below the bridge.
BENCH MARK STAMPING: NO STAMPING 1 (SRD)
MONUMENTATION: Survey Disk VM#: 5409
AGENCY: PID#: AF6796
SETTING CLASSIFICATION: Concrete Guardrail
The bench mark is located at the SW end of the south concrete guardrail, 37.8
feet (11.5 m) SE of Bench Mark K 306 1970, 20.1 feet (6.1 m) SE of the
centerline of State Road 510, and 4.1 feet (1.2 m) above the road surface.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 4
PUBLICATION DATE: 12/01/1986
Station ID: 8722059 SUPERCEDED DATE: 04/21/2003
Name: WABASSO, INDIAN RIVER
FLORIDA
NOAA Chart: 11474 Latitude: 27° 45.3' N
USGS Quad: VERO BEACH Longitude: 80° 25.6' W
T I D A L D A T U M S
Tidal datums at WABASSO, INDIAN RIVER based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: June - August 1972
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8723170 Miami Beach
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (05/26/1972) = 1.53
MEAN HIGHER HIGH WATER MHHW = 0.49
MEAN HIGH WATER MHW = 0.43
MEAN TIDE LEVEL MTL = 0.25
MEAN LOW WATER MLW = 0.06
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (07/30/1972) = -0.85
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
K 306 1970 14.32 13.89
NO 1 1972 4.59 4.16
NO 2 1972 4.64 4.21
NO 3 1972 4.59 4.16
NO STAMPING 1 (SRD) 17.51 17.08
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 4
PUBLICATION DATE: 12/01/1986
Station ID: 8722059 SUPERCEDED DATE: 04/21/2003
Name: WABASSO, INDIAN RIVER
FLORIDA
NOAA Chart: 11474 Latitude: 27° 45.3' N
USGS Quad: VERO BEACH Longitude: 80° 25.6' 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.