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Bench Mark Sheet for 8465705, New Haven CT

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


To reach the tide station and tidal bench marks from Interstate 95 North in New
Haven, take Exit 50 for Woodward Avenue and proceed down ramp for 0.5 km (0.3
mi). Keep right at the fork and follow signs for the Port Area, make a sharp
right turn and proceed northwest for 0.3 km (0.2 mi) toward Fulton Terrace. Turn
left onto Fulton Terrace and proceed south for 0.1 km (0.06 mi) to Connecticut
Avenue and continue for 0.5 km (0.3 mi) to the first right turn on Connecticut
Avenue. Turn right and proceed to the guard stationed entrance to the PSEG Power
Plant. Visitors must call one or two days prior, and check in with the guard at
the gate upon arrival. Ask the guard to unlock the fuel dock (pier). Follow the
entrance road towards the water, then turn left and follow the road along the
water to the fuel dock. The tide station is on the south side of the offshore
end of the fuel dock, and the tidal bench marks are located on the fuel dock and
along a road running north and parallel with the water.


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


                 PRIMARY BENCH MARK STAMPING:  5705 D 1999
                         DESIGNATION:          846 5705 D

MONUMENTATION:           Tidal Station disk                    VM#:        16033
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Tower concrete foundation             OPUS PID:        
LATITUDE:   41° 17.1' N (  41.28422)          LONGITUDE:  72° 54.3' W ( -72.90553)


The primary bench mark is a disk set in the SE corner of the concrete foundation
for the first electric high tension transmission tower near the PSEG power
plant, 16.90 m (55.4 ft) west of a north/south chain link fence that runs along
the water, 13.90 m (45.6 ft) west of the west edge of a paved road leading to
the plant, 7.69 m (25.2 ft) north of a chain link fence that surrounds hydrogen
tanks, and 0.6 m (2.0 ft) above ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


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


                         BENCH MARK STAMPING:  5705 A 1999
                         DESIGNATION:          846 5705 A

MONUMENTATION:           Tidal Station disk                    VM#:        16034
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pier                         OPUS PID:        
LATITUDE:   41° 17.0' N (  41.28331)          LONGITUDE:  72° 54.5' W ( -72.90775)


The bench mark is a disk set along the south side of the offshore end of the
fuel pier, 15.03 m (49.3 ft) south of the north side of the pier, 12.78 m (41.9
ft) east of the west end of the pier, and 0.65 m (2.1 ft) north of the south
side of the pier.



                         BENCH MARK STAMPING:  5705 B 1999
                         DESIGNATION:          846 5705 B

MONUMENTATION:           Tidal Station disk                    VM#:        16035
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pier                         OPUS PID#:       
LATITUDE:   41° 17.0' N (  41.28331)          LONGITUDE:  72° 54.4' W ( -72.90694)


The bench mark is a disk set about halfway along the south side of the fuel pier
from the shore, 12.29 m (40.3 ft) SW of the fourth light pole west of the shore,
7.02 m (23.0 ft) east of the fifth light pole west of the shore, 4.31 m (14.1
ft) south of the south rail of a metal drive, and 0.60 m (2.0 ft) north of the
south side of the pier.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


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


                         BENCH MARK STAMPING:  5705 C 1999
                         DESIGNATION:          846 5705 C

MONUMENTATION:           Tidal Station disk                    VM#:        16036
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pier                         OPUS PID#: BBDD09
LATITUDE:   41° 17.0' N (  41.28322)          LONGITUDE:  72° 54.4' W ( -72.90611)


The bench mark is a disk set in the NE corner of the fuel pier, 19.38 m (63.6
ft) east of the second bollard on the north side of the shore end of the pier,
3.54 m (11.6 ft) west of the NE outside corner of the pier, 5.55 m (18.2 ft)
north of the north railing, and 0.67 m (2.2 ft) south of the first bollard on
the north side of pier.



                         BENCH MARK STAMPING:  5705 E 1999
                         DESIGNATION:          846 5705 E

MONUMENTATION:           Tidal Station disk                    VM#:        16037
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Tower concrete foundation             OPUS PID:        
LATITUDE:   41° 17.1' N (  41.28553)          LONGITUDE:  72° 54.3' W ( -72.90536)


The bench mark is a disk set in the SE corner of the concrete foundation for the
second electric high tension transmission tower north of the PSEG power plant,
23.48 m (77.0 ft) NW of a metal manhole cover, 19.10 m (62.7 ft) west of the
west edge of a paved road leading to the plant, 10.64 m (34.9 ft) east of a
north/south chain link fence that runs along the water, and 0.61 m (2.0 ft)
above ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


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


                         BENCH MARK STAMPING:  5705 G 2017
                         DESIGNATION:          846 5705 G

MONUMENTATION:           Bench Mark disk                       VM#:        22494
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Building foundation                   OPUS PID:        
LATITUDE:   41° 17.2' N (  41.28664)          LONGITUDE:  72° 54.3' W ( -72.90444)


The bench mark is a brass disk set in the conrete foundation of Power
Distribution Center 2 on the north end of the PSEG Grounds and is located 32.61
m (107.0) ft east of the west corner of the concrete pad for Service Station
XFMR 2, 26.51 m (87.0 ft) south of the northern fenceline of the PSEG property,
and 3.50 m (11.5 ft) north of the northern wall for LM6000 Combustion Generator
Unit 4.



                         BENCH MARK STAMPING:  5705 F 2017
                         DESIGNATION:          846 5705 F

MONUMENTATION:           Bench Mark disk                       VM#:        22495
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Foundation for large condensate tank  OPUS PID:        
LATITUDE:   41° 17.1' N (  41.28422)          LONGITUDE:  72° 54.2' W ( -72.90400)


The bench mark is a brass disk set in the concrete foundation of Condensate Tank
B near the parking lot for the main power plant operations building and is
located 32.30 m (106.0 ft) ESE of the northeast corner of the main power plant
operations building, 14.42 m (47.3 ft) west of the western rail for the ladder
on Condensate Tank A, and 0.77 m (2.5 ft) north of the eastern rail for the
ladder on Condensate Tank B.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


                            T I D A L   D A T U M S 


Tidal datums at NEW HAVEN, NEW HAVEN HARBOR based on:

     LENGTH OF SERIES:      15 YEARS
     TIME PERIOD:           11/99-10/09, 02/12-01/15, 05/15-04/16, 08/16-07/17
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8467150 BRIDGEPORT, BRIDGEPORT HARBOR


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (10/30/2012)         =  3.731
     MEAN HIGHER HIGH WATER                     MHHW   =  2.048
     MEAN HIGH WATER                            MHW    =  1.950
     MEAN SEA LEVEL                             MSL    =  1.014
     MEAN TIDE LEVEL                            MTL    =  1.012
     MEAN LOW WATER                             MLW    =  0.074
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/06/2018)         = -0.987

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     5705 D 1999                                 4.385    2.435
     5705 A 1999                                 4.041    2.091
     5705 B 1999                                 4.038    2.088
     5705 C 1999                                 4.049    2.099
     5705 E 1999                                 4.375    2.425
     5705 G 2017                                 4.834    2.884
     5705 F 2017                                 4.562    2.612


Foot Notes:

Bench marks 5705 F 2017 and 5705 G 2017 are based on one differential leveling
connection and do not meet the quality control standards of the NOS. Therefore,
caution should be used when deriving elevations for these marks.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  6

                                                                                
Station ID: 8465705                         PUBLICATION DATE:  04/17/2018
Name:       NEW HAVEN, NEW HAVEN HARBOR                       
            CT
NOAA Chart: 12371                           Latitude:   41° 17.0' N (  41.28330)
USGS Quad:  New Haven                       Longitude:  72° 54.5' W ( -72.90830)


                             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.

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Products available at 8465705 New Haven, CT

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services