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Bench Mark Sheet for 9414819, SAUSALITO, COE DOCK, S.F. BAY 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


To reach the tidal bench marks in Sausalito, proceed east along Bridgeway Street
and then along Marinship Way to the U.S. Army Corps of Engineers (COE) San
Francisco Bay Model building facilities.  The bench marks are along Bridgeway
and east of the Corps of Engineers soil lab building. The tide gage and staff
were on the east side of the inshore portion of the Corps of Engineers dock.


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


                 PRIMARY BENCH MARK STAMPING:  SAUSALITO NO 2 1917
                         DESIGNATION:          941 4819 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:         8431
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  HT1070
SETTING CLASSIFICATION:  Building brick face                   OPUS PID:        
LATITUDE:   37° 51.6' N (  37.86000)          LONGITUDE: 122° 29.1' W (-122.48500)


The primary bench mark is a disk set vertically in the NW brick face of the
Caledonia Market building located at the east corner of the intersection of Pine
and Caledonia Streets, 1.83 m (6.0 ft) NE of the west corner of the building,
and 0.30 m (1.0 ft) above the sidewalk.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


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


                         BENCH MARK STAMPING:  32 1948
                         DESIGNATION:          941 4819 TIDAL 32

MONUMENTATION:           Tidal Station disk                    VM#:         8432
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  HT1067
SETTING CLASSIFICATION:  Concrete slab                         OPUS PID:        
LATITUDE:   37° 51.8' N (  37.86330)          LONGITUDE: 122° 29.6' W (-122.49300)


The bench mark is a disk set in top of the south corner of a concrete slab,
12.13 m (39.8 ft) SE of the south corner of the laboratory storage building,
11.13 m (36.5 ft) NE of the east corner of a chain link fence at the Corps of
Engineers laboratory yard, 4 m (14 ft) NW of the projected centerline of the
road, 3.51 m (11.5 ft) NE of the NE rail of a spur track, and 0.15 m (0.5 ft)
north of the south corner of the slab.



                         BENCH MARK STAMPING:  33 1948
                         DESIGNATION:          941 4819 TIDAL 33

MONUMENTATION:           Tidal Station disk                    VM#:         8433
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  HT1066
SETTING CLASSIFICATION:  Concrete slab                         OPUS PID:        
LATITUDE:   37° 51.8' N (  37.86330)          LONGITUDE: 122° 29.6' W (-122.49300)


The bench mark is a disk set in top of a concrete slab located at the center of
an asphalt road at the crossing of a spur track, 18.47 m (60.6 ft) south of
bench mark 32 1948, 13.41 m (44.0 ft) SE of the SE rail of a spur track, 10.58 m
(34.7 ft) south of the east fence corner of a chain link fence at the Corps of
Engineers laboratory yard, and 9.14 m (30.0 ft) NW of the fence line.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


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


                         BENCH MARK STAMPING:  LS 3221
                         DESIGNATION:          LS 3221 A
                         ALIAS:                4819 C

MONUMENTATION:           Survey disk                           VM#:         8434
AGENCY:                  City of Sausalito                     IDB PID#:  HT3535
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   37° 51.7' N (  37.86170)          LONGITUDE: 122° 29.4' W (-122.49000)


The bench mark is a disk set in a concrete monument located in the center of the
intersection of Napa Street and Bridgeway Avenue, under an iron cover marked
MONUMENT, 4.60 m (15.1 ft) Ne of the center of the southbound lanes of Bridgeway
Boulevard, and 0.30 m (1.0 ft) below the pavement.  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


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


                         BENCH MARK STAMPING:  LS 3221
                         DESIGNATION:          LS 3221
                         ALIAS:                4819 D

MONUMENTATION:           Survey disk                           VM#:         8435
AGENCY:                  City of Sausalito                     IDB PID#:  HT3536
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   37° 51.6' N (  37.86000)          LONGITUDE: 122° 29.2' W (-122.48700)


The bench mark is a disk set in a concrete monument located in the center of the
intersection of Litho Street and Bridgeway Boulevard, under an iron cover marked
MONUMENT, 4.79 m (15.7 ft) NE of the center of the southbound lanes of the
Boulevard, and 0.30 m (1.0 ft) below the pavement.  

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


                            T I D A L   D A T U M S 


Tidal datums at SAUSALITO, COE DOCK, S.F. BAY based on:

     LENGTH OF SERIES:      8 MONTHS
     TIME PERIOD:           September 1978 - April 1979
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9414290 SAN FRANCISCO, SAN FRANCISCO BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.749
     MEAN HIGH WATER                            MHW    =  1.566
     MEAN TIDE LEVEL                            MTL    =  0.955
     MEAN SEA LEVEL                             MSL    =  0.944
     MEAN LOW WATER                             MLW    =  0.344
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     North American Vertical Datum              NAVD88 = -0.052

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     SAUSALITO NO 2 1917                         4.942    3.376
     32 1948                                     3.516    1.950
     33 1948                                     3.486    1.920
     LS 3221                                     3.626    2.060
     LS 3221                                     2.613    1.047


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  6

                                                                                
Station ID: 9414819                         PUBLICATION DATE:  04/01/2004
Name:       SAUSALITO, COE DOCK, S.F. BAY                     
            CA
NOAA Chart: 18649                           Latitude:   37° 51.9' N (  37.86500)
USGS Quad:  SAN FRANCISCO NORTH             Longitude: 122° 29.6' W (-122.49300)


                             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 9414819 SAUSALITO, COE DOCK, S.F. BAY, CA

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services