U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
To reach the tidal bench marks from Best Western hotel on 3rd Street and
Broadway (near Jack London Square), head west on 3rd Street for 1.3 km (0.8 mi)
to the first stop sign. Turn left on Adeline Street, follow Adeline Street for
2.9 km (1.8 mi) to the intersection with 7th Street (2nd traffic light); turn
left on to 7th Street, go through two stop signs 1.8 km (1.1 mi) to Berth 40 (at
south side of road). The bench marks are in the vicinity and the tide gauge was
located in NE corner of wharf.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 4777 A 1994
DESIGNATION: 941 4777 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 6
AGENCY: National Ocean Service (NOS) IDB PID#: AH7158
SETTING CLASSIFICATION: Concrete wharf deck OPUS PID:
LATITUDE: 37° 48.4' N ( 37.80670) LONGITUDE: 122° 19.9' W (-122.33200)
The bench mark is a disk set flush in the concrete wharf deck at the NE corner
of the Seventh Street Marine Terminal Wharf, across the street from the Matson
Terminal facility where the "American Eagle" tug is moored, 3.96 m (13.0 ft) NE
of the eastern most bollard along the wharf face, 0.46 m (1.5 ft) west of the
east concrete face of the wharf, and 0.18 m (0.6 ft) south of the north edge of
the wharf.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: H 0106 1993
DESIGNATION: H 0106
MONUMENTATION: Tidal Station disk VM#: 32
AGENCY: Port of Oakland IDB PID#: AH7161
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 37° 48.6' N ( 37.81000) LONGITUDE: 122° 19.7' W (-122.32800)
The bench mark is a disk set atop a metal pipe located in the left lane of the
westbound lanes of 7th Street and south of Matson Terminals building at 3050 7th
Street, 12.89 m (42.3 ft) NE of light pole #23 in the center of road, 8.53 m
(28.0 ft) SSE of white fire hydrant on north side of road, 1.80 m (5.9 ft) NNE
of north edge of center island of road, 0.27 m (0.9 ft) below road grade with a
0.15 m (0.5 ft) "City Monument" metal access cover over it, and 1 m (4 ft.)
white cross painted over it.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: H 0107 1993
DESIGNATION: H 0107
MONUMENTATION: Tidal Station disk VM#: 33
AGENCY: Port of Oakland IDB PID#: AH7162
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 37° 48.6' N ( 37.81000) LONGITUDE: 122° 19.8' W (-122.33000)
The bench mark is a disk set atop a metal pipe located in the left westbound
lane of 7th Street (main port access road) outside Matson Terminal facility,
9.54 m (31.3 ft) SE of a white fire hydrant on the north side of road, 5.03 m
(16.5 ft) NE of light pole #26 in the center island of road, 1.77 m (5.8 ft)
north of north edge of center island, 0.27 m (0.9 ft) below grade with a 0.15 m
(0.5 ft) "City Monument" metal access cover over it, and1 m (4 ft) white cross
painted over it .
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: H 0108 1993
DESIGNATION: H 0108
MONUMENTATION: Tidal Station disk VM#: 34
AGENCY: Port of Oakland IDB PID#: AH7163
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 37° 48.5' N ( 37.80830) LONGITUDE: 122° 19.8' W (-122.33000)
The bench mark is a disk set atop a metal pipe located in the left westbound
lane of 7th Street (main port access road) outside Matson Terminal facility,
9.51 m (31.2 ft) SE of east edge of a 12 m (40 ft) long guard rail on north side
of road, 3.14 m (10.3 ft) NNE of light pole # 28 in the center island of road,
1.77 m (5.8 ft) north of north edge of center island, 0.27 m (0.9 ft) below road
grade with a 0.15 m (0.5 ft.) "City Monument" metal access cover over it, and 1
m (4 ft.) white cross painted over it.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: H 0109 1993
DESIGNATION: H 0109
MONUMENTATION: Tidal Station disk VM#: 35
AGENCY: Port of Oakland IDB PID#: AH7160
SETTING CLASSIFICATION: Metal pipe OPUS PID:
LATITUDE: 37° 48.6' N ( 37.81000) LONGITUDE: 122° 19.8' W (-122.33000)
The bench mark is a disk set atop a metal pipe located in the left westbound
lane of 7th Street (main port access road) which runs along the Matson Terminal
facility, approximately 46 m (150 ft) NNW of bench mark 4777 A 1994, 15.21 m
(49.9 ft) NE of light pole # 30, 10.73 m (35.2 ft) south of the cyclone fence
surrounding the Matson Terminal Facility, 1.77 m (5.8 ft) north of north edge of
medial strip which separates the opposing flow of traffic, 0.27 m (0.9 ft.)
below the road grade, with a 0.15 m (0.5 ft.) "City Monument" metal access cover
over it, and 1 m (4 ft.) white cross painted over it.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
T I D A L D A T U M S
Tidal datums at OAKLAND MIDDLE HARBOR, PIER 40 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 = 1.895
MEAN HIGH WATER MHW = 1.714
MEAN TIDE LEVEL MTL = 1.025
MEAN SEA LEVEL MSL = 0.997
MEAN LOW WATER MLW = 0.336
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
4777 A 1994 4.146 2.432
H 0106 1993 3.706 1.992
H 0107 1993 3.570 1.856
H 0108 1993 3.487 1.773
H 0109 1993 3.661 1.947
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 9414777 PUBLICATION DATE: 04/21/2003
Name: OAKLAND MIDDLE HARBOR, PIER 40
CA
NOAA Chart: 18649 Latitude: 37° 48.3' N ( 37.80500)
USGS Quad: OAKLAND WEST Longitude: 122° 20.3' W (-122.33800)
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.