U.S. DEPARTMENT OF COMMERCE
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National Ocean Service
Datums Page Page 1 of 5
Station ID: 8534770 PUBLICATION DATE: 05/23/2003
Name: VENTNOR CITY, FISHING PIER
NJ
NOAA Chart: 12214 Latitude: 39° 20.1' N ( 39.33500)
USGS Quad: Atlantic City Longitude: 74° 28.6' W ( -74.47670)
To reach the tidal bench marks from the intersection of Atlantic and Cambridge
Avenues in the City of Ventnor, proceed south on Cambridge Avenue for two blocks
to the Ventnor Fishing Pier. The bench marks are in the vicinity of Cambridge,
Atlantic, and Suffolk Avenues. The tide station was on the SW side of the pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 4770 A 1985
DESIGNATION: 853 4770 A
MONUMENTATION: Tidal Station disk VM#: 339
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 39° 20.1' N ( 39.33500) LONGITUDE: 74° 28.6' W ( -74.47670)
The primary bench mark is a disk located on the west side of Cambridge Avenue at
the boardwalk, 25.15 m (82.5 ft) NNW of the north face of the boardwalk, 13.72 m
(45.0 ft) SSW of metal light pole A12_26, 11.09 m (36.4 ft) ESE of the NE corner
of 114 Cambridge Avenue, 8.93 m (29.3 ft) west of a fire hydrant, and 0.67 m
(2.2 ft) WSW of the curb. The bench mark is 12 cm (0.4 ft) below ground level,
crimped to a stainless steel rod driven 15 m (48 ft) to refusal, and encased in
a 5-inch PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8534770 PUBLICATION DATE: 05/23/2003
Name: VENTNOR CITY, FISHING PIER
NJ
NOAA Chart: 12214 Latitude: 39° 20.1' N ( 39.33500)
USGS Quad: Atlantic City Longitude: 74° 28.6' W ( -74.47670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: F 56 1961
DESIGNATION: F 56
MONUMENTATION: Bench Mark disk VM#: 340
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: JU0326
SETTING CLASSIFICATION: Building wall OPUS PID:
LATITUDE: 39° 20.3' N ( 39.33830) LONGITUDE: 74° 28.7' W ( -74.47830)
The bench mark is a disk set vertically in the SE corner of City Hall at the NW
corner of the intersection of Cambridge and Atlantic Avenues, 27.43 m (90.0 ft)
WNW of the centerline of Cambridge Avenue, 20.36 m (66.8 ft) NNW of the
centerline of Atlantic Avenue, 15.15 m (49.7 ft) SW of a flagpole, 0.25 m (0.8
ft) WSW of the SE corner of the building, and 1.37 m (4.5 ft) above ground
level.
BENCH MARK STAMPING: 4770 B 1985
DESIGNATION: 853 4770 B
MONUMENTATION: Tidal Station disk VM#: 341
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 39° 20.1' N ( 39.33500) LONGITUDE: 74° 28.6' W ( -74.47670)
The bench mark is a disk located on the south side of Atlantic Avenue between
Dudley and Dorsett Avenues, 38.31 m (125.7 ft) ENE of the centerline of Dorsett
Avenue, 11.52 m (37.8 ft) SSE of the centerline of Atlantic Avenue, 8.23 m (27.0
ft) WSW of power pole 606, 0.91 m (3.0 ft) SSE of the curb, and 0.61 m (2.0 ft)
NNE of the sidewalk. The bench mark is 9 cm (0.3 ft) below ground level,
crimped to a stainless steel rod driven 12 m (38 ft) to refusal, and encased in
a 5-inch PVC pipe and concrete kickblock. Note: Letter B is illegible in
stamping.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8534770 PUBLICATION DATE: 05/23/2003
Name: VENTNOR CITY, FISHING PIER
NJ
NOAA Chart: 12214 Latitude: 39° 20.1' N ( 39.33500)
USGS Quad: Atlantic City Longitude: 74° 28.6' W ( -74.47670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 4770 C 1985
DESIGNATION: 853 4770 C
MONUMENTATION: Tidal Station disk VM#: 342
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete wall OPUS PID:
LATITUDE: 39° 20.1' N ( 39.33500) LONGITUDE: 74° 28.6' W ( -74.47670)
The bench mark is a disk set vertically in a concrete wall on the west side of
Suffolk Avenue at the boardwalk, 44 m (144 ft) SSE of the SE corner of the
tennis courts, 17.98 m (59.0 ft) SSW of the southern end of a concrete parking
meter island, 13.72 m (45.0 ft) NNW of the north face of the boardwalk, and 1.22
m (4.0 ft) above the sidewalk.
BENCH MARK STAMPING: 4839
DESIGNATION: 4839
MONUMENTATION: Survey disk VM#: 343
AGENCY: New Jersey Geodetic Survey (NJGS) IDB PID#: JU0325
SETTING CLASSIFICATION: Concrete monument OPUS PID#: JU0325
LATITUDE: 39° 20.4' N ( 39.34000) LONGITUDE: 74° 28.4' W ( -74.47330)
The bench mark is a disk on the NW corner of the intersection of Suffolk and
Atlantic Avenues, 14.33 m (47.0 ft) NNW of the centerline of Atlantic Avenue,
11.70 m (38.4 ft) east of the SE corner of 5501 Suffolk Avenue, 5.43 m (17.8 ft)
WSW of the centerline of Suffolk Avenue, 4.27 m (14.0 ft) north of power pole
A553, 0.61 m SSE of a stop sign, and 0.03 m (0.1 ft) below ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8534770 PUBLICATION DATE: 05/23/2003
Name: VENTNOR CITY, FISHING PIER
NJ
NOAA Chart: 12214 Latitude: 39° 20.1' N ( 39.33500)
USGS Quad: Atlantic City Longitude: 74° 28.6' W ( -74.47670)
T I D A L D A T U M S
Tidal datums at VENTNOR CITY, FISHING PIER based on:
LENGTH OF SERIES: 6 YEARS
TIME PERIOD: January 1986 - December 1991
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8557380 LEWES, FT. MILES
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (09/27/1985) = 2.617
MEAN HIGHER HIGH WATER MHHW = 1.411
MEAN HIGH WATER MHW = 1.283
North American Vertical Datum NAVD88 = 0.797
MEAN SEA LEVEL MSL = 0.678
MEAN TIDE LEVEL MTL = 0.668
MEAN LOW WATER MLW = 0.053
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/10/1986) = -0.815
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
4770 A 1985 3.162 1.879
F 56 1961 5.305 4.022
4770 B 1985 3.665 2.382
4770 C 1985 4.325 3.042
4839 3.637 2.354
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8534770 PUBLICATION DATE: 05/23/2003
Name: VENTNOR CITY, FISHING PIER
NJ
NOAA Chart: 12214 Latitude: 39° 20.1' N ( 39.33500)
USGS Quad: Atlantic City Longitude: 74° 28.6' W ( -74.47670)
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.