U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 9413616 PUBLICATION DATE: 02/26/2004 Name: MOSS LANDING,OCEAN PIER CA NOAA Chart: 18685 Latitude: 36° 48.1' N ( 36.80170) USGS Quad: MOSS LANDING Longitude: 121° 47.4' W (-121.79000) To reach the tidal bench marks from Moro Cojo Slough, proceed north along State Highway 1, then turn and proceed west on the first road north of Tailing Pond, then turn left on the road over the Moro Cojo Slough again, then proceed over the channel to the Moss Landing Marine Laboratory and Harbor District Office area. The tide gage and staff were located on the west end of Mossing Landing Ocean Pier. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 3616 A 1976 DESIGNATION: 941 3616 A TIDAL MONUMENTATION: Tidal Station disk VM#: 8052 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete block OPUS PID#: BBCR97 LATITUDE: 36° 48.1' N ( 36.80170) LONGITUDE: 121° 47.4' W (-121.79000) The primary bench mark is a disk set horizontally in NE corner of top of a concrete block, 10.18 m (33.4 ft) west of centerline of Moss Landing Road, and 1.89 m (6.2 ft) south of SE corner of Moss Landing Manufacturing Incorporated. BENCH MARK STAMPING: 3616 B 1976 DESIGNATION: 941 3616 B TIDAL MONUMENTATION: Tidal Station disk VM#: 8053 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete sea wall OPUS PID: LATITUDE: 36° 48.1' N ( 36.80170) LONGITUDE: 121° 47.4' W (-121.79000) The bench mark is a disk set horizontally on inside of concrete sea wall at Moss Landing Marine Laboratory, 3 m (9 ft) from NE corner of laboratory, 0.46 m (1.5 ft) from north end of sea wall, and 1.01 m (3.3 ft) below top of sea wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 9413616 PUBLICATION DATE: 02/26/2004 Name: MOSS LANDING,OCEAN PIER CA NOAA Chart: 18685 Latitude: 36° 48.1' N ( 36.80170) USGS Quad: MOSS LANDING Longitude: 121° 47.4' W (-121.79000) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 3616 C 1976 DESIGNATION: 941 3616 C TIDAL MONUMENTATION: Tidal Station disk VM#: 8054 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 36° 48.1' N ( 36.80170) LONGITUDE: 121° 47.4' W (-121.79000) The bench mark is a disk, 23 m (75 ft) NE of NE end of the bridge across the harbor, 16 m (52 ft) ESE of the centerline of Moss Landing, and 7 m (23 ft) SSW of harbor parking lot. The bench mark is crimped to top a copper-clad steel rod, encased in a white PVC pipe extending 3 cm (0.1 ft) above grade. BENCH MARK STAMPING: 3616 D 1976 DESIGNATION: 941 3616 D TIDAL MONUMENTATION: Tidal Station disk VM#: 8055 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 36° 48.1' N ( 36.80170) LONGITUDE: 121° 47.4' W (-121.79000) The bench mark is a disk, 2.32 m (7.6 ft) SSW of NE corner of Moss Landing Harbor District Office, and 1.74 m (5.7 ft) east of east wall of office building. The bench mark is crimped to a copper-clad steel rod, encased in a white PVC pipe extending 6 cm (0.2 ft) above grade.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 9413616 PUBLICATION DATE: 02/26/2004 Name: MOSS LANDING,OCEAN PIER CA NOAA Chart: 18685 Latitude: 36° 48.1' N ( 36.80170) USGS Quad: MOSS LANDING Longitude: 121° 47.4' W (-121.79000) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 3616 E 1976 DESIGNATION: 941 3616 E TIDAL MONUMENTATION: Tidal Station disk VM#: 8056 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 36° 48.1' N ( 36.80170) LONGITUDE: 121° 47.4' W (-121.79000) The bench mark is a disk, 37 m (120 ft) WSW of centerline of State Highway 1, 22 m (71 ft) NNW of center of traffic island at the intersection of State Highway 1 and Moss Landing road, and 1.58 m (5.2 ft) SSW of a telephone pole. The bench mark is crimped to a copper-clad steel rod, encased in a white PVC pipe extending 12 cm (0.4 ft) above grade.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 9413616 PUBLICATION DATE: 02/26/2004 Name: MOSS LANDING,OCEAN PIER CA NOAA Chart: 18685 Latitude: 36° 48.1' N ( 36.80170) USGS Quad: MOSS LANDING Longitude: 121° 47.4' W (-121.79000) T I D A L D A T U M S Tidal datums at MOSS LANDING,OCEAN PIER based on: LENGTH OF SERIES: 5 MONTHS TIME PERIOD: March 1977 - July 1977 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 9413450 MONTEREY, MONTEREY HARBOR Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 1.590 MEAN HIGH WATER MHW = 1.377 MEAN TIDE LEVEL MTL = 0.846 MEAN SEA LEVEL MSL = 0.833 MEAN LOW WATER MLW = 0.316 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 3616 A 1976 4.307 2.930 3616 B 1976 4.082 2.705 3616 C 1976 2.372 0.995 3616 D 1976 3.510 2.133 3616 E 1976 4.184 2.807
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 9413616 PUBLICATION DATE: 02/26/2004 Name: MOSS LANDING,OCEAN PIER CA NOAA Chart: 18685 Latitude: 36° 48.1' N ( 36.80170) USGS Quad: MOSS LANDING Longitude: 121° 47.4' W (-121.79000) 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.