Superseded Bench Mark Sheet for 8534048, BEACH HAVEN CREST (INSIDE) NJ

Present Epoch

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  5

                                                   PUBLICATION DATE:  06/28/1988
Station ID: 8534048                                SUPERCEDED DATE:   04/21/2003
Name:       BEACH HAVEN CREST, LITTLE EGG HARBOR              
            NEW JERSEY
NOAA Chart: 12324                                  Latitude:         39° 36.8' N
USGS Quad:  BEACH HAVEN                            Longitude:        74° 12.6' W


To reach the tidal bench marks at Beach Haven Crest, proceed 0.4 mile (0.6 km)
SW along Bay Avenue from the Long Beach Township Hall to the intersection of Bay
Avenue and Jeannette Street, turn left and continue to the foot of Jeannette
Street.  The bench marks are in the vicinity of Jeannette Street (Seventy Eighth
Street) and the sewage disposal plant.  The tide gage and staff were at the
Crest Marina pier.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  4048 A 1976

MONUMENTATION:           Survey Disk                               VM#:     2622
AGENCY:                                                            PID:         
SETTING CLASSIFICATION:  Copper-clad Steel Rod


The bench mark is set at the NW end of Jeannette Street, 60.7 feet (18.5 m) SE
of the corner of the bulkhead of the Crest Marina, 21.8 feet (6.6 m) NE of the
centerline of Jeannette Street, 16.4 feet (5.0 m) SE of the SE corner of Boat
House #147, and 16.2 feet (4.9 m) NW of utility pole #P 10259.  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:  Y 66 1964

MONUMENTATION:           Survey Disk                               VM#:     2621
AGENCY:                                                            PID#:  JU0192
SETTING CLASSIFICATION:  Concrete Sewer Foundation


The bench mark is set in the top of the south corner of a 7x7 foot (2x2 m)
square, 6 feet (2 m) deep concrete sewer outfall on piles, having 1-foot (0.3 m)
thick walls and a manhole in the center, 145 feet (44 m) NW of the centerline of
Bay Avenue, 13.0 feet (4.0 m) SW of the south corner of the main building of the
disposal plant, and level with the road surface.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                   PUBLICATION DATE:  06/28/1988
Station ID: 8534048                                SUPERCEDED DATE:   04/21/2003
Name:       BEACH HAVEN CREST, LITTLE EGG HARBOR              
            NEW JERSEY
NOAA Chart: 12324                                  Latitude:         39° 36.8' N
USGS Quad:  BEACH HAVEN                            Longitude:        74° 12.6' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  4048 B 1976

MONUMENTATION:           Survey Disk                               VM#:     2623
AGENCY:                                                            PID:         
SETTING CLASSIFICATION:  Copper-clad Steel Rod


The bench mark is set at 114 Jeannette Street, 0.2 mile (0.3 km) NW along
Jeannette Street from the intersection of Bay Avenue and Jeannette Street, 350
feet (107 m) SE of Bench Mark 4048 A 1976, 53.8 feet (16.4 m) south of utility
pole #T 4462, 30.3 feet (9.2 m) SSW of the centerline of Jeannette Street, 24.2
feet (7.4 m) NE of the NW corner, and 11.5 feet (3.5 m) NW of the NE corner of
the frame house at #114.  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:  4048 C 1976

MONUMENTATION:           Survey Disk                               VM#:     2624
AGENCY:                                                            PID:         
SETTING CLASSIFICATION:  Copper-clad Steel Rod


The bench mark is set at 28 Jeannette Street, 400 feet (122 m) NW along
Jeannette Street from the intersection of Bay Avenue and Jeannette Street, 47.4
feet (14.4 m) south of utility pole #11317, 26.4 feet (8.0 m) SW of the
centerline of the street, and 14.6 feet (4.4 m) east of the NW corner of the
house.  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  3 of  5

                                                   PUBLICATION DATE:  06/28/1988
Station ID: 8534048                                SUPERCEDED DATE:   04/21/2003
Name:       BEACH HAVEN CREST, LITTLE EGG HARBOR              
            NEW JERSEY
NOAA Chart: 12324                                  Latitude:         39° 36.8' N
USGS Quad:  BEACH HAVEN                            Longitude:        74° 12.6' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  4048 D 1976

MONUMENTATION:           Survey Disk                               VM#:     2625
AGENCY:                                                            PID#:  AC7255
SETTING CLASSIFICATION:  Copper-clad Steel Rod


The bench mark is 400 feet (122 m) east of Bench Mark 4048 C 1976, 21.4 feet
(6.5 m) NE of the north curb of Jeannette Street, 20.5 feet (6.2 m) NE of
utility pole #P 7478, 11.5 feet (3.5 m) west of the catch basin on the west curb
of Bay Avenue, and 6.0 feet (1.8 m) east of the SE corner of Antique Shop at
7712 Bay Avenue.  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:  06/28/1988
Station ID: 8534048                                SUPERCEDED DATE:   04/21/2003
Name:       BEACH HAVEN CREST, LITTLE EGG HARBOR              
            NEW JERSEY
NOAA Chart: 12324                                  Latitude:         39° 36.8' N
USGS Quad:  BEACH HAVEN                            Longitude:        74° 12.6' W


                            T I D A L   D A T U M S 


Tidal datums at BEACH HAVEN CREST, LITTLE EGG HARBOR based on:

     LENGTH OF SERIES:      8 MONTHS
     TIME PERIOD:           AUGUST 1976 - JUNE 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 (10/01/1976)         =   3.36
     MEAN HIGHER HIGH WATER                     MHHW   =   2.18
     MEAN HIGH WATER                            MHW    =   1.94
     MEAN TIDE LEVEL                            MTL    =   1.01
     MEAN LOW WATER                             MLW    =   0.08
     MEAN LOWER LOW WATER                       MLLW   =   0.00
     LOWEST  OBSERVED WATER LEVEL (12/13/1976)         =  -1.37

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In FEET above:

     Stamping or Designation                    MLLW        MHW

     4048 A 1976                                 3.74      1.80
     Y 66 1964                                   5.70      3.76
     4048 B 1976                                 3.96      2.02
     4048 C 1976                                 3.48      1.54
     4048 D 1976                                 3.45      1.51


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  5

                                                   PUBLICATION DATE:  06/28/1988
Station ID: 8534048                                SUPERCEDED DATE:   04/21/2003
Name:       BEACH HAVEN CREST, LITTLE EGG HARBOR              
            NEW JERSEY
NOAA Chart: 12324                                  Latitude:         39° 36.8' N
USGS Quad:  BEACH HAVEN                            Longitude:        74° 12.6' 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.

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