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Bench Mark Sheet for 9411270, RINCON ISLAND, PACIFIC OCEAN 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Superseded Epoch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Small blue map location marker Unpublished bench mark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.

Error: There is no bench mark map available for 9411270 RINCON ISLAND, PACIFIC OCEAN, CA
Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


To reach the tidal bench marks proceed along State Highway 101 south from Santa
Barbara or north from Ventura, exit at Mussel Shoals and then proceed west
towards the ocean.  The bench marks are located on Rincon Island and the
mainland near the causeway.  The tide station was located on the north side of
the causeway where it meets the island.


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


                 PRIMARY BENCH MARK STAMPING:  TIDAL 1 1962
                         DESIGNATION:          941 1270 TIDAL 1

MONUMENTATION:           Tidal Station disk                    VM#:         3113
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  EW6485
SETTING CLASSIFICATION:  Concrete sea wall                     OPUS PID:        
LATITUDE:   34° 20.8' N (  34.34670)          LONGITUDE: 119° 26.7' W (-119.44500)


The primary bench mark is a disk set in the SE end of the inshore concrete sea
wall flush with the surface of the ground, on the property of Atlantic Richfield
Oil Corporation,15 m (49 ft) SE of the NW corner of the electrical building,
2.74 m (9.0 ft) SW of the SW corner of the railing around the boat ramp, 0.76 m
(2.5 ft) SE of the SE corner of the fire pump building, and 0.18 m ( 0.6 ft) NW
of the SE end of the seawall.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


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


                         BENCH MARK STAMPING:  TIDAL 2 1962
                         DESIGNATION:          941 1270 TIDAL 2

MONUMENTATION:           Tidal Station disk                    VM#:         3114
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  EW6484
SETTING CLASSIFICATION:  Concrete sea wall                     OPUS PID:        
LATITUDE:   34° 20.9' N (  34.34830)          LONGITUDE: 119° 26.6' W (-119.44300)


The bench mark is a disk set in the NW end of the inshore concrete sea wall on
the property of Atlantic Richfield Oil Corporation, 17.37 m (57.0 ft) NW of the
NW corner of the electrical building, 13.72 m (45.0 ft) SW of the traffic light
on the pier leading from the island, and flush with the surface of the ground.



                         BENCH MARK STAMPING:  GORDA 2 NO 1 CSLC 1959
                         DESIGNATION:           GORDA 2 RM 1

MONUMENTATION:           Reference Mark disk                   VM#:         3115
AGENCY:                  California Dept. of Transportion (CADT)IDB PID#:  EW6481
SETTING CLASSIFICATION:  Concrete cylinder                     OPUS PID:        
LATITUDE:   34° 21.3' N (  34.35500)          LONGITUDE: 119° 26.5' W (-119.44200)


The bench mark is a disk set in top of a 1-foot diameter concrete cylinder, 10 m
(33 ft) NW of the centerline of Ocean Avenue, 6.40 m (21.0 ft) SW of the
centerline of Breakers Way, 1.22 m (4.0 ft) NW of powerline pole #2835, and
projects 0.06 m (0.2 ft) above the ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


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


                         BENCH MARK STAMPING:  GORDA 2 RM 3 1954
                         DESIGNATION:          GORDA 2 RM 3

MONUMENTATION:           Survey disk                           VM#:         3116
AGENCY:                  California Dept. of Transportion (CADT)IDB PID#:  EW6480
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   34° 21.4' N (  34.35670)          LONGITUDE: 119° 26.5' W (-119.44200)


The bench mark is a disk set in a 0.3 m (1 ft) diameter concrete monument, 30.78
m (101.0 ft) NE of the centerline of Breakers Way, 11.28 m (37.0 ft) west of the
centerline of Ocean Avenue, 3.81 m (12.5 ft) south of the south corner of an
abandoned 5 m x 5 m (16 x 18 ft) concrete slab, and  0.24 m (0.8 ft) west of an
angle iron witness post protruding 0.73 m (2.4 ft) from the ground, and flush
with the ground.            

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


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


                         BENCH MARK STAMPING:  GORDA 3 NO 1 1974
                         DESIGNATION:          GORDA 3 RM 1

MONUMENTATION:           Reference Mark disk                   VM#:         3118
AGENCY:                  California Dept. of Transportion (CADT)IDB PID#:  EW6804
SETTING CLASSIFICATION:  Concrete foundation pier              OPUS PID:        
LATITUDE:   34° 21.3' N (  34.35500)          LONGITUDE: 119° 26.5' W (-119.44200)


The bench mark is a disk set in top of a 0.76 m (2.5 ft) high by 1 m (3 ft)
square abandoned concrete foundation pier, 10 m (32 ft) north of the north face
of the most seaward of six abandoned concrete foundation piers, 9.66 m (31.7 ft)
south of the centerline of Breakers Way, and 5.94 m (19.5 ft) SE of the
eastern-most power pole on Breakers Way.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


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


                         BENCH MARK STAMPING:  H 1048 1960
                         DESIGNATION:          H 1048

MONUMENTATION:           Bench Mark disk                       VM#:         3119
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  EW6488
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID:        
LATITUDE:   34° 21.4' N (  34.35670)          LONGITUDE: 119° 26.4' W (-119.44000)


The bench mark is a disk set in the east concrete abutment of railroad bridge
387.04 located 9.4 km (5.8 mi) SE along the Southern Pacific Railroad from the
station of Carpinteria,  460 m (1500 ft) NE of the inshore end of the causeway
to ARCO's Rincon Island, 80 m (264 ft)  east of milepost 387, 1.95 m (6.4 ft)
NNE of the north rail of railroad tracks, 0.55 m (1.8 ft) south of north end of
abutment, and  0.61 m (2.0 ft) below the track level.



                         BENCH MARK STAMPING:  USCE NO 25 1966
                         DESIGNATION:          25

MONUMENTATION:           Survey disk                           VM#:         3120
AGENCY:                  US Army Corps of Engineers (USE)      IDB PID#:  EW6801
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   34° 21.4' N (  34.35670)          LONGITUDE: 119° 26.5' W (-119.44200)


The bench mark is a disk set in the top of a 0.15m (0.5 ft) square concrete post
located 0.5 km (0.3 mi) NNE of the inshore end of the ARCO bridge to Rincon
Island, 11.58 m (38.0 ft) north of the northern edge of Highway 101, 3.05 m
(10.0 ft) south of the southernmost rail of the Southern Pacific Railroad
tracks, 2.74 m (9.0 ft) NNE of a telephone pole, and 0.15 m (0.5 ft) above
ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


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


                         BENCH MARK STAMPING:  1270 K 1977
                         DESIGNATION:          941 1270 K TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        16807
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  EW6807
SETTING CLASSIFICATION:  Rock outcrop                          OPUS PID:        
LATITUDE:   34° 21.3' N (  34.35500)          LONGITUDE: 119° 26.5' W (-119.44200)


The bench mark is a disk set in highest point of bedrock outcropping fronting a
house at 6626 Pacific Coast Highway, 16.82 m (55.2 ft) south of the westerly
concrete foundation of the house, 9.75 m (32.0 ft) east of the west toe of
outcropping, and at apparent high water level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


                            T I D A L   D A T U M S 


Tidal datums at RINCON ISLAND, PACIFIC OCEAN based on:

     LENGTH OF SERIES:      12 Years
     TIME PERIOD:           November 1979 - October 1990
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9410660 LOS ANGELES, OUTER HARBOR


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

     HIGHEST OBSERVED WATER LEVEL (01/27/1983)         =  2.380
     MEAN HIGHER HIGH WATER                     MHHW   =  1.664
     MEAN HIGH WATER                            MHW    =  1.434
     MEAN TIDE LEVEL                            MTL    =  0.868
     MEAN SEA LEVEL                             MSL    =  0.861
     MEAN LOW WATER                             MLW    =  0.301
     North American Vertical Datum              NAVD88 =  0.030
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/16/1965)         = -0.707

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     TIDAL 1 1962                                4.755    3.321
     TIDAL 2 1962                                4.740    3.306
     GORDA 2 NO 1 CSLC 1959                      5.527    4.093
     GORDA 2 RM 3 1954                           6.936    5.502
     GORDA 3 NO 1 1974                           6.751    5.317
     H 1048 1960                                11.421    9.987
     USCE NO 25 1966                            11.167    9.733
     1270 K 1977                                 3.154    1.720


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                                                
Station ID: 9411270                         PUBLICATION DATE:  04/21/2003
Name:       RINCON ISLAND, PACIFIC OCEAN                      
            CA
NOAA Chart: 18725                           Latitude:   34° 20.9' N (  34.34830)
USGS Quad:  PITAS POINT                     Longitude: 119° 26.6' W (-119.44300)


                             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 9411270 RINCON ISLAND, PACIFIC OCEAN, CA

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