U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 PUBLICATION DATE: 09/21/2000 Station ID: 9414764 SUPERCEDED DATE: 04/21/2003 Name: OAKLAND INNER HARBOR, S.F.BAY CALIFORNIA NOAA Chart: 18649 Latitude: 37° 47.7' N USGS Quad: OAKLAND WEST Longitude: 122° 16.9' W To reach the bench marks go to the Oakland Fire Department Station 2 on the west side of the intersection of Clay and Water streets at the west end of Jack London Square in Oakland, California. The bench marks are in the vicinity, and the tide station was located inside the fire station compound, approximately 12 m (40 ft) north of the wharf face beneath the fire station building overhang. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: PORT 1 1936 DESIGNATION: PORT 1 ALIAS: 941 4764 TIDAL 1 MONUMENTATION: Tidal Station disk VM#: 8401 AGENCY: US Coast & Geodetic Survey (USC&GS) PID#: HT0654 SETTING CLASSIFICATION: Concrete seawall The primary bench mark is a disk set on the north edge of the concrete seawall at the foot of Clay Street, 5 m (16 ft) west of the west wall of the Clay Street pier, and 2 m (7 ft) west of a fire plug. BENCH MARK STAMPING: PORT 2 1936 DESIGNATION: PORT 2 ALIAS: 941 4764 TIDAL 2 MONUMENTATION: Tidal Station disk VM#: 8402 AGENCY: US Coast & Geodetic Survey (USC&GS) PID#: HT0655 SETTING CLASSIFICATION: Concrete wall The bench mark is a disk set vertically in the east concrete wall of Pacific Gas and Electric Steam Power Plant Nunmber C, at the SW corner of Embarcedero Road and Jefferson Street, 0.45 m (1.5 ft) south of the NE corner of the plant, and 1 m (3 ft) above the sidewalk.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 PUBLICATION DATE: 09/21/2000 Station ID: 9414764 SUPERCEDED DATE: 04/21/2003 Name: OAKLAND INNER HARBOR, S.F.BAY CALIFORNIA NOAA Chart: 18649 Latitude: 37° 47.7' N USGS Quad: OAKLAND WEST Longitude: 122° 16.9' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4764 A 1994 DESIGNATION: 941 4764 A MONUMENTATION: Tidal Station disk VM#: 12898 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete bulkhead The bench mark is a disk set flush in the concrete bulkhead fronting the wooden deck on the SW corner of the Waterfront Plaza hotel property, the hotel's small asphalt paved parking lot is adjacent to the cobbled drive leading to the wooden deck, 15.78 m (51.8 ft) NNW of the center of wooden octogonal stage located on the wooden deck, 12 m (40 ft) south of the centerline of the parking lot, 11.43 m (37.5 ft) SW of a white fire hydrant, and 0.3 m (1 ft) NE of the NW end of railing surrounding the wooden deck. BENCH MARK STAMPING: 4764 B 1994 DESIGNATION: 941 4764 B MONUMENTATION: Tidal Station disk VM#: 12899 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete traffic island The bench mark is a disk set flush in concrete on top of a traffic island leading to the entrance of the Oakland/Alameda ferry parking lot located at the corner of the Washington and Embarcedero West Street, 12.04 m (39.5 ft) east of the centerline of Washington Street, 3.26 m (10.7 ft) west of the parking lot toll booth, 1.01 m (3.3 ft) south of the north edge of the traffic island, and 0.18 m (0.6 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 PUBLICATION DATE: 09/21/2000 Station ID: 9414764 SUPERCEDED DATE: 04/21/2003 Name: OAKLAND INNER HARBOR, S.F.BAY CALIFORNIA NOAA Chart: 18649 Latitude: 37° 47.7' N USGS Quad: OAKLAND WEST Longitude: 122° 16.9' W T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4764 C 1994 DESIGNATION: 941 4764 C MONUMENTATION: Tidal Station disk VM#: 12900 AGENCY: National Ocean Service (NOS) PID: SETTING CLASSIFICATION: Concrete foundation The bench mark is a disk set flush in concrete foundation of a transformer located near the NE corner of the PG&E Station C substation, 16.55 m (54.3 ft) west of the centerline of Jefferson Street, 11.33 m (37.2 ft) south of the centerline of 2nd Street, 7.13 m (23.4 ft) SE of the center of a grated storm drain cover, 0.15 m (0.5 ft) north of wood slated cyclone fence surrounding the substation, and 0.21 m (0.7 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 PUBLICATION DATE: 09/21/2000 Station ID: 9414764 SUPERCEDED DATE: 04/21/2003 Name: OAKLAND INNER HARBOR, S.F.BAY CALIFORNIA NOAA Chart: 18649 Latitude: 37° 47.7' N USGS Quad: OAKLAND WEST Longitude: 122° 16.9' W T I D A L D A T U M S Tidal datums at OAKLAND INNER HARBOR, S.F.BAY based on: LENGTH OF SERIES: 1 MONTHS TIME PERIOD: August 1994 - August 1994 TIDAL EPOCH: 1960-1978 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 = 1.936 MEAN HIGH WATER MHW = 1.751 MEAN TIDE LEVEL MTL = 1.044 MEAN SEA LEVEL MSL = 1.023 MEAN LOW WATER MLW = 0.337 North American Vertical Datum NAVD88 = 0.073 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW PORT 1 1936 2.934 1.183 PORT 2 1936 4.036 2.285 4764 A 1994 3.175 1.424 4764 B 1994 3.886 2.135 4764 C 1994 3.934 2.183
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 PUBLICATION DATE: 09/21/2000 Station ID: 9414764 SUPERCEDED DATE: 04/21/2003 Name: OAKLAND INNER HARBOR, S.F.BAY CALIFORNIA NOAA Chart: 18649 Latitude: 37° 47.7' N USGS Quad: OAKLAND WEST Longitude: 122° 16.9' 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 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 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.