U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 06/22/1988
Station ID: 8534208 SUPERCEDED DATE: 04/21/2003
Name: BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR
NEW JERSEY
NOAA Chart: 12316 Latitude: 39° 32.9' N
USGS Quad: BEACH HAVEN Longitude: 74° 15.4' W
To reach the tidal bench marks from the intersection of Osborn Avenue and Long
Beach Boulevard (Bay Avenue) on Long Beach Island at Beach Haven, proceed 0.2
mile (0.3 km) NW along Osborn Avenue to Gores Marina. The bench marks are along
Osborn Avenue. The tide gage and staff were on the Gores Marina Pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 4208 B 1976
MONUMENTATION: Survey Disk VM#: 2654
AGENCY: PID:
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is at the intersection of Bay and Osborn Avenues, 54.0 feet (16.5
m) SE of a wood flag pole, 52.7 feet (16.1 m) NE of wood utility pole #T 5753,
17.7 feet (5.4 m) NE of the north edge of pavement on Osborn Avenue, 17.6 feet
(5.4 m) NW of the west edge of pavement on Bay Avenue, and 7.3 feet (2.2 m) west
of wood utility pole #11188. The bench mark is 0.2 foot (0.1 m) below ground
level, crimped to a copper-clad steel rod driven 50 feet (15 m), and encased in
a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: ST JAMES NO 4 1932
MONUMENTATION: Survey Disk VM#: 2650
AGENCY: PID#: JU0211
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in top of a concrete monument, 1.6 miles (2.6 km) SW along
Bay Avenue from the Beach Haven Post Office, 0.1 mile (0.2 km) NW of the
centerline of Bay Avenue, 203.1 feet (61.9 m) south of Bench Mark ST JAMES NO 5
1932, 13.0 feet (4.0 m) south of the centerline of the sand road, 1.5 feet (0.5
m) west of power pole #P36894, and 0.1 foot (0.03 m) underground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
PUBLICATION DATE: 06/22/1988
Station ID: 8534208 SUPERCEDED DATE: 04/21/2003
Name: BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR
NEW JERSEY
NOAA Chart: 12316 Latitude: 39° 32.9' N
USGS Quad: BEACH HAVEN Longitude: 74° 15.4' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: ST JAMES NO 5 1932
MONUMENTATION: Survey Disk VM#: 2651
AGENCY: PID#: JU0209
SETTING CLASSIFICATION: Concrete Monument
The bench mark is set in top of a concrete monument along the shoulder of the
road, 1.6 miles (2.6 km) SW along Bay Avenue from the Beach Haven Post Office,
0.1 mile (0.2 km) NW along a sand road, 654 feet (199 m) NW of the centerline of
Bay Avenue, 107.5 feet (32.8 m) SE of power pole #36896, 54.0 feet (16.5 m) NW
of power pole #36895, 11.0 feet (3.4 m) SW of the centerline of the sand road,
and 0.5 foot (0.2 m) below the level of the road.
BENCH MARK STAMPING: M 67 1964
MONUMENTATION: Survey Disk VM#: 2652
AGENCY: PID#: JU0208
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is near the U.S. Coast Guard Bond Life Boat Station, 157 feet (48
m) east of the east corner of the building, 49 feet (15 m) NW of the centerline
of West Avenue, 39 feet (12 m) SW of the centerline of Pelham Avenue, 7.8 feet
(2.4 m) SW of the east corner of the cyclone fence, 0.9 foot (0.3 m) SE of the
SE side of the fence, and 0.8 foot (0.3 m) SE of a metal witness post. The
bench mark is 0.1 foot (0.03 m) below ground level, crimped to a copper-clad
steel rod driven 83 feet (25 m) to refusal, and encased in a square tile.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
PUBLICATION DATE: 06/22/1988
Station ID: 8534208 SUPERCEDED DATE: 04/21/2003
Name: BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR
NEW JERSEY
NOAA Chart: 12316 Latitude: 39° 32.9' N
USGS Quad: BEACH HAVEN Longitude: 74° 15.4' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 4208 A 1976
MONUMENTATION: Survey Disk VM#: 2653
AGENCY: PID:
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is near the Gores Marina Office, 63.5 feet (19.4 m) NW of a wood
utility pole, 13.9 feet (4.2 m) SW of the SW corner of a 1-story frame boat
house, 7.3 feet (2.2 m) SE of the wood bulkhead, 2.1 feet (0.6 m) NE of the NW
corner of a concrete base for a gasoline sign, and 2.0 feet (0.6 m) NW of the NE
corner of the same concrete base. The bench mark is 0.2 foot (0.1 m) below
ground level, crimped to a copper-clad steel rod driven 50 feet (15 m), 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
PUBLICATION DATE: 06/22/1988
Station ID: 8534208 SUPERCEDED DATE: 04/21/2003
Name: BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR
NEW JERSEY
NOAA Chart: 12316 Latitude: 39° 32.9' N
USGS Quad: BEACH HAVEN Longitude: 74° 15.4' W
T I D A L D A T U M S
Tidal datums at BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR based on:
LENGTH OF SERIES: 8 MONTHS
TIME PERIOD: SEPTEMBER 1976 - AUGUST 1977
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8557380 LEWES DE
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (08/09/1976) = 5.69
MEAN HIGHER HIGH WATER MHHW = 2.62
MEAN HIGH WATER MHW = 2.35
MEAN TIDE LEVEL MTL = 1.24
MEAN LOW WATER MLW = 0.12
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (04/07/1977) = -1.10
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
4208 B 1976 6.88 4.53
ST JAMES NO 4 1932 6.14 3.79
ST JAMES NO 5 1932 5.87 3.52
M 67 1964 5.48 3.13
4208 A 1976 5.52 3.17
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 06/22/1988
Station ID: 8534208 SUPERCEDED DATE: 04/21/2003
Name: BEACH HAVEN COAST GUARD STATION, LITTLE EGG HARBOR
NEW JERSEY
NOAA Chart: 12316 Latitude: 39° 32.9' N
USGS Quad: BEACH HAVEN Longitude: 74° 15.4' 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.