U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 06/20/1988
Station ID: 8538438 SUPERCEDED DATE: 04/21/2003
Name: MANTUA, MANTUA CREEK
NEW JERSEY
NOAA Chart: 12312 Latitude: 39° 47.8' N
USGS Quad: WOODBURY Longitude: 75° 10.6' W
To reach the tidal bench marks from the intersection of Berkley Avenue and Route
45 (Bridgeton Pike) in the village of Mantua, proceed west on Berkley Avenue for
0.3 mile (0.5 km) to Elm Avenue, then north on Elm Street for 0.2 mile (0.3 km)
to Glenwood Avenue, then east on Glenwood Avenue for 0.1 mile (0.2 km) to
Ferndale Avenue, then 0.2 mile (0.3 km) north on Ferndale Avenue to its
intersection with Crestmont Avenue. The bench marks are along Ferndale Avenue.
The tide gage and staff were on the bulkhead behind #239 Crestmont Avenue.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 8438 A 1978
MONUMENTATION: Survey Disk VM#: 2831
AGENCY: PID:
SETTING CLASSIFICATION: Galvanized Steel Rod
The bench mark is 50.3 feet (15.3 m) east of the SE corner of the garage of the
house at 239 Cresmont Avenue, 47.0 feet (14.3 m) east of wood utility pole
#3357, 38.7 feet (11.8 m) north of the centerline of Cresmont Avenue, and 12.3
feet (3.7 m) east of the centerline of the sidewalk leading to the house. The
bench mark is 0.2 foot (0.1 m) below ground level, crimped to a galvanized steel
rod driven 50 feet (15 m) to refusal, and encased in a PVC pipe and concrete
kickblock.
BENCH MARK STAMPING: 8438 B 1978
MONUMENTATION: Survey Disk VM#: 2832
AGENCY: PID:
SETTING CLASSIFICATION: Galvanized Steel Rod
The bench mark is 190 feet (58 m) SW of Bench Mark 8438 A 1978, 81.5 feet (24.8
m) NW of a wood utility pole, 22.0 feet (6.7 m) west of the centerline of
Ferndale Avenue and 4.1 feet (1.2 m) east of the east end of a 4-foot (1 m) high
chain link fence. The bench mark is 0.12 foot (0.04 m) below ground level,
crimped to a galvanized steel rod driven 50 feet (15 m) to refusal, and encased
in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
PUBLICATION DATE: 06/20/1988
Station ID: 8538438 SUPERCEDED DATE: 04/21/2003
Name: MANTUA, MANTUA CREEK
NEW JERSEY
NOAA Chart: 12312 Latitude: 39° 47.8' N
USGS Quad: WOODBURY Longitude: 75° 10.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8438 C 1978
MONUMENTATION: Survey Disk VM#: 2833
AGENCY: PID:
SETTING CLASSIFICATION: Galvanized Steel Rod
The bench mark is 337 feet (103 m) south of Bench Mark 8438 B 1978, 22.5 feet
(6.9 m) east of the centerline of Fernadale Avenue, 12.4 feet (3.8 m) SW of a
corner of a 5-foot (2 m) high wood rail fence, and 10.5 feet (3.2 m) north of
wood utility pole #PN 15227. The bench mark is set 0.2 foot (0.1 m) below
ground level, crimped to a galvanized steel rod driven 50 feet (15 m) to
refusal, and encased in a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: 8438 D 1978
MONUMENTATION: Survey Disk VM#: 2834
AGENCY: PID:
SETTING CLASSIFICATION: Galvanized Steel Rod
The bench mark is 292 feet (89 m) south of Bench Mark 8438 C 1978, 25.0 feet
(7.6 m) south of the centerline of Glenwood Avenue, 19.5 feet (5.9 m) west of
the extended centerline of Ferndale Avenue, and 5.0 feet (1.5 m) east of the NE
corner of a 5 foot (2 m) high chain link fence. The bench mark is set 0.2 foot
(0.1 m) below ground level, crimped to a galvanized steel rod driven 50 feet (15
m) to refusal, 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: 06/20/1988
Station ID: 8538438 SUPERCEDED DATE: 04/21/2003
Name: MANTUA, MANTUA CREEK
NEW JERSEY
NOAA Chart: 12312 Latitude: 39° 47.8' N
USGS Quad: WOODBURY Longitude: 75° 10.6' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 8438 E 1978
MONUMENTATION: Survey Disk VM#: 2835
AGENCY: PID:
SETTING CLASSIFICATION: Galvanized Steel Rod
The bench mark is 210 feet (64 m) west of Bench Mark 8438 D 1978, 22 feet
(6.7 m) south of the centerline of Glenwood Avenue, 6.3 feet (1.9 m) SW of wood
utility pole #PN 15223, and 5.2 feet (1.6 m) SE of a steel street intersection
signpost. The bench mark is 0.2 foot (0.1 m) below ground level, crimped to a
galvanized steel rod driven 50 feet (15 m) to refusal, 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: 06/20/1988
Station ID: 8538438 SUPERCEDED DATE: 04/21/2003
Name: MANTUA, MANTUA CREEK
NEW JERSEY
NOAA Chart: 12312 Latitude: 39° 47.8' N
USGS Quad: WOODBURY Longitude: 75° 10.6' W
T I D A L D A T U M S
Tidal datums at MANTUA, MANTUA CREEK based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: MAY-SEPTEMBER 1978
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8538512 PAULSBORO, MANTUA CREEK
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (07/04/1978) = 6.09
MEAN HIGHER HIGH WATER MHHW = 4.60
MEAN HIGH WATER MHW = 4.34
MEAN TIDE LEVEL MTL = 2.28
MEAN LOW WATER MLW = 0.22
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (07/30/1978) = -0.21
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
8438 A 1978 25.34 21.00
8438 B 1978 37.45 33.11
8438 C 1978 39.58 35.24
8438 D 1978 42.53 38.19
8438 E 1978 44.16 39.82
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 06/20/1988
Station ID: 8538438 SUPERCEDED DATE: 04/21/2003
Name: MANTUA, MANTUA CREEK
NEW JERSEY
NOAA Chart: 12312 Latitude: 39° 47.8' N
USGS Quad: WOODBURY Longitude: 75° 10.6' 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.