Superseded Bench Mark Sheet for 1612404, FORD ISLAND, FERRY DOCK, PEARL HARBOR HI

Present Epoch

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  4

                                                   PUBLICATION DATE:  09/05/2001
Station ID: 1612404                                SUPERCEDED DATE:   04/21/2003
Name:       FORD IS. FERRY DOCK, PEARL HBR                    
            HAWAII
NOAA Chart: 19013                                  Latitude:         21° 22.1' N
USGS Quad:  PEARL HARBOR                           Longitude:       157° 56.4' W


To reach the tidal bench marks from Honolulu, take H-1 West and take the first
exit after "Hickam AFB/Pearl Harbor" which is the "Arizona Memorial/Alcoha
Stadium" exit.  Stay in the left lane which puts you on Kam Highway.  On the
left you will pass the Makalapa and Haalawa Gates to Pearl Harbor and then you
will turn left at a sign "USS Arizona Next Left".  The gauge was located about
70 m (230 ft) west of the Ford Island Perry USN Security shack on the
"COMTHIRDFLT Boat Dock".  The bench marks were located in the vicinity.


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


                 PRIMARY BENCH MARK STAMPING:  2404 A 1987
                         DESIGNATION:          161 2404 A

MONUMENTATION:           Tidal Station disk                        VM#:    16499
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete foundation


The primary bench mark is a disk set in the concrete foundation of the northern
of two hydraulic pistons which operate the ramp for the Ford Island Ferry, 6 m
(20 ft) east of the water's edge, 0.30 m (1 ft) south of the south edge of the
concrete wall surrounding hydraulic piston, and 0.15 m (0.5 ft) east of the west
edge of the concrete foundation.



                         BENCH MARK STAMPING:  2404 B 1987
                         DESIGNATION:          161 2404 B

MONUMENTATION:           Tidal Station disk                        VM#:    16500
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete storm drain


The bench mark is a disk set in the SE corner of a 1.37 m x 1.37 m (4.5 ft x 4.5
ft) concrete storm drain, 64 m (210 ft) NE of the ferry dock for the Ford Island
Ferry, 58 m (189 ft) east of the inshore end of the COMTHIRDFLT Boat Dock, 55 m
(180 ft) SE of the WII USS BOWFIN submarine moorage, 25 m (82 ft) NW of a
security shack at the entrance to the ferry dock, and 0.09 m (0.3 ft) south of a
cyclone fence.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  4

                                                   PUBLICATION DATE:  09/05/2001
Station ID: 1612404                                SUPERCEDED DATE:   04/21/2003
Name:       FORD IS. FERRY DOCK, PEARL HBR                    
            HAWAII
NOAA Chart: 19013                                  Latitude:         21° 22.1' N
USGS Quad:  PEARL HARBOR                           Longitude:       157° 56.4' W


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


                         BENCH MARK STAMPING:  2404 C 1987
                         DESIGNATION:          161 2404 C

MONUMENTATION:           Tidal Station disk                        VM#:    16501
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete foundation


The bench mark is a disk set in a foundation for the guard shack at the entrance
to the Ford Island Ferry Dock, 23.56 m (77.3 ft) SE of bench mark 2404 B 1987,
1.89 m (6.2 ft) west of the door to the guard shack, and 0.46 m (1.5 ft) east of
the edge of the curb.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  4

                                                   PUBLICATION DATE:  09/05/2001
Station ID: 1612404                                SUPERCEDED DATE:   04/21/2003
Name:       FORD IS. FERRY DOCK, PEARL HBR                    
            HAWAII
NOAA Chart: 19013                                  Latitude:         21° 22.1' N
USGS Quad:  PEARL HARBOR                           Longitude:       157° 56.4' W


                            T I D A L   D A T U M S 


Tidal datums at FORD IS. FERRY DOCK, PEARL HBR based on:

     LENGTH OF SERIES:      91 HWS and 91 LWS
     TIME PERIOD:           January 30, 1987 - March 22, 1987
     TIDAL EPOCH:           1960-1978
     CONTROL TIDE STATION:  1612340 HONOLULU, HONOLULU HARBOR, OAHU ISLAND


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

     MEAN HIGHER HIGH WATER                     MHHW   =  0.616
     MEAN HIGH WATER                            MHW    =  0.472
     MEAN SEA LEVEL                             MSL    =  0.275
     MEAN TIDE LEVEL                            MTL    =  0.261
     MEAN LOW WATER                             MLW    =  0.049
     MEAN LOWER LOW WATER                       MLLW   =  0.000



Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     2404 A 1987                                 1.063    0.591
     2404 B 1987                                 1.503    1.032
     2404 C 1987                                 1.774    1.302


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

                                                   PUBLICATION DATE:  09/05/2001
Station ID: 1612404                                SUPERCEDED DATE:   04/21/2003
Name:       FORD IS. FERRY DOCK, PEARL HBR                    
            HAWAII
NOAA Chart: 19013                                  Latitude:         21° 22.1' N
USGS Quad:  PEARL HARBOR                           Longitude:       157° 56.4' 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 any other fixed island datum.

This tide station location has a local island datum.  Island datums
are specific fixed geodetic datums whose elevation relationship 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.

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