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Bench Mark Sheet for 9414767, ALAMEDA NAS, NAVY FUEL PIER CA

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9414767                         PUBLICATION DATE:  04/21/2003
Name:       ALAMEDA NAS, NAVY FUEL PIER                       
            CA
NOAA Chart: 18649                           Latitude:   37° 47.6' N (  37.79330)
USGS Quad:  OAKLAND WEST                    Longitude: 122° 18.9' W (-122.31500)


To reach the tidal bench marks from Oakland, California, take the Webster Street
tube under the Oakland Inner Harbor channel to Alameda.  Once through the tube
turn right onto Atlantic Street and follow it to the gate into Alameda Naval Air
Station (NAS).  After passing through the gate continue on Atlantic to 5th
Street and turn right which will curve to the left to become Avenue F.  Follow
Avenue F to 3rd Street and turn right, follow 3rd Street to Avenue A, turn left.
 Follow Avenue A to Perimeter Road, turn right, follow Perimeter Road 1.3 km
(0.8 mi) to a driveway to the locked gate on the right into the JP 5 storage
area.  The NAS Fuel Pier is located behind the JP 5 storage bunker. Call in
advance the Dispatch Office (510) 263-3638 to have someone unlock the gate into
the storage area and the gate to get onto the Fuel Pier. The bench marks are
located along Perimeter Road and in the storage area. The tide gauge and staff
were located on the southeast corner of the NAS Fuel Pier.


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


                 PRIMARY BENCH MARK STAMPING:  4767 A 1994
                         DESIGNATION:          941 4767 A

MONUMENTATION:           Tidal Station disk                    VM#:            1
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete footing                      OPUS PID:        
LATITUDE:   37° 47.7' N (  37.79500)          LONGITUDE: 122° 18.9' W (-122.31500)


The bench mark is a disk set flush in top of the concrete footing supporting the
west end of the JP 5 fuel pipe located in the center island of the fuel truck
loading area, 7.92 m (26.0 ft) east of western end of center island, 6.71 m
(22.0 ft) south of the SE corner of Building 375, 0.09 m (0.3 ft) south of
southern edge of the curb around the center island, and 0.06 m (0.2 ft) below
the surrounding grade.

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

                                                                                
Station ID: 9414767                         PUBLICATION DATE:  04/21/2003
Name:       ALAMEDA NAS, NAVY FUEL PIER                       
            CA
NOAA Chart: 18649                           Latitude:   37° 47.6' N (  37.79330)
USGS Quad:  OAKLAND WEST                    Longitude: 122° 18.9' W (-122.31500)


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


                         BENCH MARK STAMPING:  4767 B 1994
                         DESIGNATION:          941 4767 B

MONUMENTATION:           Tidal Station disk                    VM#:            2
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete box                          OPUS PID:        
LATITUDE:   37° 47.7' N (  37.79500)          LONGITUDE: 122° 18.9' W (-122.31500)


The bench mark is a disk set flush in top of 1.13 m x 1.13 m (3.7 ft x 3.7 ft)
yellow concrete box protecting a storm drain cover south of the JP 5 bunker,
29.08 m (95.4 ft) north of east entrance gate post, 15.14 m (49.7 ft) west of NW
corner of Building 376, 1.62 m ( 5.3 ft) north of 1 m (4 ft) tall vent pipe for
an undergroud tank surrounded by a yellow protective cage, 0.06 m (0.2 ft) north
of south edge of the concrete box, 0.06 m (0.2 ft) west of the east edge of
concrete box, and 0.3 m (1.0 ft) above ground.



                         BENCH MARK STAMPING:  4767 D 1994
                         DESIGNATION:          941 4767 D

MONUMENTATION:           Tidal Station disk                    VM#:            3
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete box                          OPUS PID:        
LATITUDE:   37° 47.7' N (  37.79500)          LONGITUDE: 122° 18.9' W (-122.31500)


The bench mark is a disk set flush in the NW corner of a 1 m x 1 m (3 ft x 3 ft)
concrete utility box with a metal cover near entrance to NAV AVN DEPOT FARM
along Perimeter Road, 19.02 m (62.4 ft) east of yellow fire hydrant #331, 7.71 m
(25.3 ft) north of the center line of Perimeter Road, 1.40 m (4.6 ft) SSW of red
fire call box #M-1303162, 0.06 m (0.2 ft) south of the north edge of concrete
box, 0.06 m (0.2 ft) east of the west edge of concrete box, and flush with
ground level.

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

                                                                                
Station ID: 9414767                         PUBLICATION DATE:  04/21/2003
Name:       ALAMEDA NAS, NAVY FUEL PIER                       
            CA
NOAA Chart: 18649                           Latitude:   37° 47.6' N (  37.79330)
USGS Quad:  OAKLAND WEST                    Longitude: 122° 18.9' W (-122.31500)


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


                         BENCH MARK STAMPING:  4767 C 1994
                         DESIGNATION:          941 4767 C

MONUMENTATION:           Tidal Station disk                    VM#:            4
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete box                          OPUS PID:        
LATITUDE:   37° 47.7' N (  37.79500)          LONGITUDE: 122° 18.9' W (-122.31500)


The bench mark is a disk set flush in a 1 m x 1 m (3 ft x 3 ft) concrete utility
box with a metal cover near the intersection of Perimeter Road and the road
leading to the JP 5 Fuel Pier, 4.88 m (16.0 ft) north of the center line of
Perimeter Road, 1.34 m (4.4 ft) SW of a red fire call box #117, 0.06 m (0.2 ft)
south of the north edge of the concrete box, 0.06 m (0.2 ft) east of the west
edge of the concrete box, and flush with the ground.



                         BENCH MARK STAMPING:  4767 E 1994
                         DESIGNATION:          941 4767 E

MONUMENTATION:           Tidal Station disk                    VM#:            5
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete block                        OPUS PID:        
LATITUDE:   37° 47.7' N (  37.79500)          LONGITUDE: 122° 18.9' W (-122.31500)


The bench mark is a disk set flush in concrete in a 1.92 m X 1.55 m (6.3 ft X
5.1 ft) concrete block with "USN SEWER" lid along Perimeter Road east of
Construction Battalion Unit 416 and Building 27, 27.13 m (89.0 ft) east of SE
corner of Building 27, 20.15 m (66.1 ft) south of centerline of Perimeter Road,
1.13 m (3.7 ft) NE of center of SEWER lid, 0.18 m (0.6 ft) south of north edge
of concrete, 0.15 m (0.5 ft) west of east edge of concrete, and 0.12 m (0.4 ft)
above surrounding grade.

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

                                                                                
Station ID: 9414767                         PUBLICATION DATE:  04/21/2003
Name:       ALAMEDA NAS, NAVY FUEL PIER                       
            CA
NOAA Chart: 18649                           Latitude:   37° 47.6' N (  37.79330)
USGS Quad:  OAKLAND WEST                    Longitude: 122° 18.9' W (-122.31500)


                            T I D A L   D A T U M S 


Tidal datums at ALAMEDA NAS, NAVY FUEL PIER based on:

     LENGTH OF SERIES:      1 Month
     TIME PERIOD:           August 1994 - August 1994
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9414750 ALAMEDA, SAN FRANCISCO BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.952
     MEAN HIGH WATER                            MHW    =  1.763
     MEAN TIDE LEVEL                            MTL    =  1.055
     MEAN SEA LEVEL                             MSL    =  1.028
     MEAN LOW WATER                             MLW    =  0.347
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     4767 A 1994                                 2.833    1.070
     4767 B 1994                                 2.768    1.005
     4767 D 1994                                 2.759    0.996
     4767 C 1994                                 2.933    1.170
     4767 E 1994                                 2.943    1.180


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

                                                                                
Station ID: 9414767                         PUBLICATION DATE:  04/21/2003
Name:       ALAMEDA NAS, NAVY FUEL PIER                       
            CA
NOAA Chart: 18649                           Latitude:   37° 47.6' N (  37.79330)
USGS Quad:  OAKLAND WEST                    Longitude: 122° 18.9' W (-122.31500)


                             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 9414767 ALAMEDA NAS, NAVY FUEL PIER, CA

Revised: 08/08/2018
NOAA / National Ocean Service
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