U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
PUBLICATION DATE: 06/21/1988
Station ID: 8530186 SUPERCEDED DATE: 04/21/2003
Name: NEW MILFORD, HACKENSACK RIVER
NEW JERSEY
NOAA Chart: 12363 Latitude: 40° 56.1' N
USGS Quad: HACKENSACK Longitude: 74° 1.8' W
To reach the tidal bench marks from Exit 163 of the Garden State Parkway,
proceed south on Route No. 17 to Century Road, east on Century Road and south on
Spring Valley Road for one block, east on Holland Avenue and north on
Kinderkamack Road parallel to the river, east on River Edge Avenue across the
river, then south on Columbia Street. The bench marks are in the vicinity of
Columbia Street and River Edge Avenue. The tide gage and staff were on the
bulkhead at the rear of the residence at No. 626 Columbia Street.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0186 A 1976
MONUMENTATION: Survey Disk VM#: 2425
AGENCY: PID:
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is 200 feet (61 m) south from the intersection of Columbia Street
and River Edge Avenue, 46.8 feet (14.3 m) SE of the SE corner of the dwelling at
No. 624, 28.2 feet (8.6 m) SW of utility pole #A 61517 NMB, and 9.9 feet (3.0 m)
west of the west curb of Columbia Street. 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.
BENCH MARK STAMPING: 0186 B 1976
MONUMENTATION: Survey Disk VM#: 2426
AGENCY: PID:
SETTING CLASSIFICATION: Concrete Abutment
The bench mark is at the NW corner of the River Edge Avenue bridge over the
Hackensack River, 14.0 feet (4.3 m) north of the north curb of River Edge
Avenue, 5.6 feet (1.7 m) SW of the outside corner of the abutment, 5.5 feet (1.7
m) NE of the NE corner of a catch basin, 3.6 feet (1.1 m) NE of utility pole
#60223 RE, 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: 06/21/1988
Station ID: 8530186 SUPERCEDED DATE: 04/21/2003
Name: NEW MILFORD, HACKENSACK RIVER
NEW JERSEY
NOAA Chart: 12363 Latitude: 40° 56.1' N
USGS Quad: HACKENSACK Longitude: 74° 1.8' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0186 C 1976
MONUMENTATION: Survey Disk VM#: 2427
AGENCY: PID:
SETTING CLASSIFICATION: Concrete Abutment
The bench mark is set into the SE concrete abutment of the River Edge Avenue
bridge over the Hackensack River, 65.8 feet (20.1 m) east of the west end of the
bridge, 25.0 feet (7.6 m) west of utility pole #FH4FM 6000 DNMB, 8.5 feet (2.6
m) south of the south curb of River Edge Avenue, and 1.0 foot (0.3 m) below the
sidewalk.
BENCH MARK STAMPING: 0186 D 1976
MONUMENTATION: Survey Disk VM#: 2428
AGENCY: PID:
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is on the property of the dwelling at No. 599 Columbia Street,
63.8 feet (19.4 m) SE of the SE corner of the dwelling, 61.2 feet (18.7 m) west
of utility pole #T 61061 NMB, and 11.7 feet (3.6 m) north of the north curb of
River Edge 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) to refusal, and encased
in a PVC pipe and concrete.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
PUBLICATION DATE: 06/21/1988
Station ID: 8530186 SUPERCEDED DATE: 04/21/2003
Name: NEW MILFORD, HACKENSACK RIVER
NEW JERSEY
NOAA Chart: 12363 Latitude: 40° 56.1' N
USGS Quad: HACKENSACK Longitude: 74° 1.8' W
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0186 E 1976
MONUMENTATION: Survey Disk VM#: 2429
AGENCY: PID:
SETTING CLASSIFICATION: Copper-clad Steel Rod
The bench mark is at the NE corner of the intersection of River Edge Avenue and
Holland Avenue, 64.3 feet (19.6 m) SW of the most southerly SW corner of the
house at 104 Holland Avenue, 37.0 feet (11.3 m) south of utility pole #P S 818
NMB, and 13.3 feet (4.1 m) east of the east curb of Holland 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) to refusal, and encased in a PVC pipe and concrete.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
PUBLICATION DATE: 06/21/1988
Station ID: 8530186 SUPERCEDED DATE: 04/21/2003
Name: NEW MILFORD, HACKENSACK RIVER
NEW JERSEY
NOAA Chart: 12363 Latitude: 40° 56.1' N
USGS Quad: HACKENSACK Longitude: 74° 1.8' W
T I D A L D A T U M S
Tidal datums at NEW MILFORD, HACKENSACK RIVER based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: NOVEMBER 1976
TIDAL EPOCH: 1960-1978
CONTROL TIDE STATION: 8530278 HACKENSACK, HACKENSACK RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in FEET:
HIGHEST OBSERVED WATER LEVEL (10/25/1976) = 6.02
MEAN HIGHER HIGH WATER MHHW = 5.10
MEAN HIGH WATER MHW = 4.80
MEAN TIDE LEVEL MTL = 2.44
MEAN LOW WATER MLW = 0.08
MEAN LOWER LOW WATER MLLW = 0.00
LOWEST OBSERVED WATER LEVEL (12/03/1976) = -0.77
Bench Mark Elevation Information In FEET above:
Stamping or Designation MLLW MHW
0186 A 1976 8.96 4.16
0186 B 1976 12.07 7.27
0186 C 1976 12.14 7.34
0186 D 1976 11.63 6.83
0186 E 1976 13.26 8.46
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
PUBLICATION DATE: 06/21/1988
Station ID: 8530186 SUPERCEDED DATE: 04/21/2003
Name: NEW MILFORD, HACKENSACK RIVER
NEW JERSEY
NOAA Chart: 12363 Latitude: 40° 56.1' N
USGS Quad: HACKENSACK Longitude: 74° 1.8' 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.