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Bench Mark Sheet for 8512354, SHINNECOCK INLET OPEN COAST NY

Superseded Epoch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Small blue map location marker Unpublished bench mark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  5

                                                                                
Station ID: 8512354                         PUBLICATION DATE:  05/05/2014
Name:       SHINNECOCK INLET                                  
            NY
NOAA Chart: 12353                           Latitude:   40° 50.2' N (  40.83670)
USGS Quad:  SHINNECOCK INLET                Longitude:  72° 28.8' W ( -72.48000)


To reach the tidal bench marks by car from the intersection of Montauk Highway
and Ponquogue Avenue in Hampton Bays, proceed south 2.4 km (1.5 mi) on Ponquogue
Avenue to the  T  intersection with Shinnecock Road, turn left and proceed 0.8
km (0.5 mi) east to Foster Avenue, turn right and proceed south then SE 3.9 km
(2.4 mi) across Ponquogue Bridge to the  T  intersection with Dune Road, turn
left and proceed ENE 1.6 km (1.0 mi) to the end of Dune Road in the parking lot
near the channel.  The benchmarks are set in the rock revetment along the west
bank of the channel, in the adjacent sand and parking lot, and along Dune Road. 
The tide house and the tide gauge orifice are located at the end of the jetty by
the USCG navigation aid tower.


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


                 PRIMARY BENCH MARK STAMPING:  NO 1 1974
                         DESIGNATION:          851 2354 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:         7400
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Concrete slab                         OPUS PID:        
LATITUDE:   40° 50.5' N (  40.84169)          LONGITUDE:  72° 28.7' W ( -72.47869)


The primary bench is a disk set in a concrete slab between the concrete footings
for an observation tower that has been removed, 49.20 m (161.4 ft) SSE of the
centerline of Dune Road, 49.03 m (160.9 ft) SW of the W corner of the chain link
fence around a communication tower, 2.82 m (9.3 ft) ESE of the NE corner of NW
concrete tower footing, 2.00 m (6.6 ft) SW of the NW corner of the NE concrete
tower footing, 1.09 m (3.6 ft) W of an orange carsonite witness post, and 30 cm
(1.0 ft) below the surrounding sand and the nearby concrete footings. 

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                                                
Station ID: 8512354                         PUBLICATION DATE:  05/05/2014
Name:       SHINNECOCK INLET                                  
            NY
NOAA Chart: 12353                           Latitude:   40° 50.2' N (  40.83670)
USGS Quad:  SHINNECOCK INLET                Longitude:  72° 28.8' W ( -72.48000)


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


                         BENCH MARK STAMPING:  2354 D 2013
                         DESIGNATION:          851 2354 D

MONUMENTATION:           Bench Mark disk                       VM#:        20903
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   40° 50.4' N (  40.84061)          LONGITUDE:  72° 28.7' W ( -72.47786)


The bench mark is a disk set in a boulder along the top of the rock jetty
extending S into the ocean on the W side of Shinnecock Inlet, 157.65 m (517.2
ft) S of the S corner of the fence around a communications tower, 83.52 m (274.0
ft) N of the USCG navigation aid tower near the S end of the rock jetty, 3.60 m
(11.8 ft) W of E edge of the top of the jetty, and 1.70 m (5.6 ft) E of the W
edge of the top of the jetty.



                         BENCH MARK STAMPING:  2354 E 2013
                         DESIGNATION:          851 2354 E

MONUMENTATION:           Bench Mark disk                       VM#:        20904
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   40° 50.5' N (  40.84244)          LONGITUDE:  72° 28.7' W ( -72.47817)


The bench mark is a disk set in the top of a boulder in the rock revetment on
the W side of Shinnecock Inlet, 123.70 m (405.8 ft) SSE of a carved inscription
in a rock at the NE corner of the rock revetment, 35.50 m (116.5 ft) N of N
corner of the chain link fence around a communications tower, 14.90 m (48.9 ft)
ENE of the E edge of the asphalt parking lot, and 3.35 m (11.0 ft) WSW of the E
edge of the top of the rock revetment.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                                                
Station ID: 8512354                         PUBLICATION DATE:  05/05/2014
Name:       SHINNECOCK INLET                                  
            NY
NOAA Chart: 12353                           Latitude:   40° 50.2' N (  40.83670)
USGS Quad:  SHINNECOCK INLET                Longitude:  72° 28.8' W ( -72.48000)


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


                         BENCH MARK STAMPING:  2354 F 2013
                         DESIGNATION:          851 2354 F

MONUMENTATION:           Flange-encased Rod                    VM#:        20905
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod in sleeve         OPUS PID#: BBDG81
LATITUDE:   40° 50.6' N (  40.84283)          LONGITUDE:  72° 28.7' W ( -72.47892)


The bench mark is a flange encased rod set in the sand lot inside of the parking
area at the E end of Dune Road, 53.77 m (176.4 ft) ENE of the main-gate with
concrete ramp through the wooden fence leading to the E most restaurant on Dune
Road, 37.50 m (123.0 ft) WSW of rock revetment, 6.50 m (21.3 ft) WSW of W edge
of the pavement, 2.00 m (6.6 ft) SSE of the S edge of the pavement, and 1.29 m
(4.2 ft) N of an orange carsonite witness post. The datum point is the top of a
stainless steel rod driven 28.0 m (92 ft) to refusal encased in a 5-inch NOS
logo cover and concrete kickblock.



                         BENCH MARK STAMPING:  2354 G 2013
                         DESIGNATION:          851 2354 G

MONUMENTATION:           Bench Mark disk                       VM#:        20906
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID:        
LATITUDE:   40° 50.5' N (  40.84208)          LONGITUDE:  72° 28.9' W ( -72.48189)


The bench mark is a disk set in the NE corner of a concrete deck for loading
trucks at the Shinnecock Fish Dock company, 23.30 m (76.4 ft) E of the SW corner
of Shinnecock Fish Dock building, 4.98 m (16.3 ft) WSW of the side of the
Hampton Lady restaurant building, 4.15 m (13.6 ft) NNW of the S side of the
concrete pad, 0.45 m (1.5 ft) SSE of the N side of the concrete deck, and 0.26 m
(0.9 ft) WSW of the E side of the concrete pad.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                                                
Station ID: 8512354                         PUBLICATION DATE:  05/05/2014
Name:       SHINNECOCK INLET                                  
            NY
NOAA Chart: 12353                           Latitude:   40° 50.2' N (  40.83670)
USGS Quad:  SHINNECOCK INLET                Longitude:  72° 28.8' W ( -72.48000)


                            T I D A L   D A T U M S 


Tidal datums at SHINNECOCK INLET based on:

     LENGTH OF SERIES:      5 MONTHS
     TIME PERIOD:           October 2013 - February 2014
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8452660 NEWPORT, NARRAGANSETT BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.056
     MEAN HIGH WATER                            MHW    =  0.977
     MEAN TIDE LEVEL                            MTL    =  0.508
     MEAN SEA LEVEL                             MSL    =  0.492
     MEAN LOW WATER                             MLW    =  0.039
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 1 1974                                   4.468    3.491
     2354 D 2013                                 2.998    2.021
     2354 E 2013                                 2.746    1.769
     2354 F 2013                                 1.518    0.541
     2354 G 2013                                 2.817    1.840


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

                                                                                
Station ID: 8512354                         PUBLICATION DATE:  05/05/2014
Name:       SHINNECOCK INLET                                  
            NY
NOAA Chart: 12353                           Latitude:   40° 50.2' N (  40.83670)
USGS Quad:  SHINNECOCK INLET                Longitude:  72° 28.8' W ( -72.48000)


                             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 8512354 SHINNECOCK INLET OPEN COAST, NY

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services