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National Ocean Service
Datums Page Page 1 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
Go reach the station from the intersection of County Route 553 and High Street
in Port Norris, proceed 1.45km (0.9 mi) south on High Street to the Long Reach
Marina. The gage is on the SW side of the refueling dock.
T I D A L B E N C H M A R K S
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 01412150 A 1997
DESIGNATION: 01412150 A
MONUMENTATION: Survey disk VM#: 22531
AGENCY: U.S. Geodetic Survey (USGS) IDB PID#:
SETTING CLASSIFICATION: Concrete base OPUS PID:
LATITUDE: 39° 14.0' N ( 39.23250) LONGITUDE: 75° 2.1' W ( -75.03472)
The bench mark is a disk set in the south corner of concrete base for a 25 m (82
ft) high antenna mast at Long Reach Marina, 17.90 m (58.7 ft) SE from centerline
of Light House Road, 7.20 m (23.6 ft) SE from utility pole number ACE 2205, and
2.80 m (9.2 ft) south from the west corner of general store.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 01412150 C 1997
DESIGNATION: 01412150 C
MONUMENTATION: Survey disk VM#: 22532
AGENCY: New Jersey Geodetic Survey (NJGS) IDB PID#:
SETTING CLASSIFICATION: Concrete antenna mast OPUS PID:
LATITUDE: 39° 14.1' N ( 39.23417) LONGITUDE: 75° 1.9' W ( -75.03222)
The bench mark is a disk set flush in east corner of concrete base for 25 m (82
ft) high antenna mast, 52.80 m (173.2 ft) SSE from utility pole number B 56314,
and 0.40 m (1.4 ft) west from the north corner of Bivalve Packing Company Office
next to Rutgers Research Station.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: RV 6050
MONUMENTATION: Rivet VM#: 22534
AGENCY: New Jersey Geodetic Survey (NJGS) IDB PID#:
SETTING CLASSIFICATION: Headwall OPUS PID:
LATITUDE: 39° 14.7' N ( 39.24528) LONGITUDE: 75° 1.8' W ( -75.03000)
The bench mark is a rivet set flush in the top of the concrete culvert headwall
located on the east side of Light House Road (High Street), 50.69 m (166.3 ft)
north from the centerline of Miller Avenue, 19.81 m (65.0 ft) south from
utility pole number 241, 6.89 m (22.6 ft) east from the centerline of High
Street, and 1.00 m (3.3 ft) east of a metal guiderail.
BENCH MARK STAMPING:
DESIGNATION: 6B1 1992
MONUMENTATION: See descriptive text VM#: 22572
AGENCY: IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 39° 14.0' N ( 39.23250) LONGITUDE: 75° 2.1' W ( -75.03472)
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
T I D A L D A T U M S
Tidal datums at BIVALVE, MAURICE RIVER based on:
LENGTH OF SERIES: 11 MONTHS
TIME PERIOD: January 2017 - November 2017
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8536110 CAPE MAY, CAPE MAY CANAL, DELAWARE BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 1.913
MEAN HIGH WATER MHW = 1.782
North American Vertical Datum NAVD88 = 1.040
MEAN SEA LEVEL MSL = 0.955
MEAN TIDE LEVEL MTL = 0.921
MEAN LOW WATER MLW = 0.058
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
01412150 A 1997 2.417 0.635
01412150 C 1997 2.546 0.764
RV 6050 1.758 -0.024
6B1 1992 2.093 0.311
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8535055 PUBLICATION DATE: 06/11/2018
Name: BIVALVE, MAURICE RIVER
NOAA Chart: 12304 Latitude: 39° 13.9' N ( 39.23250)
USGS Quad: PORT NORRIS Longitude: 75° 2.0' W ( -75.03280)
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 NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.
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.