NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Bench Mark Sheet for 9449911, Upright Head WA

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


To reach the tide station from the Washington State Ferry Terminal in Anacortes,
proceed 18.0 km (11.0 mi) NW on the ferry to the Lopez Island ferry terminal,
disembark the ferry and proceed 30 m (100 ft) SW to the south end of the ramp
and the tide station on the metal platform on the right.  The bench mark are
along the shoreline and roadway that approaches the Lopez Island ferry terminal.


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


                 PRIMARY BENCH MARK STAMPING:  2 1947
                         DESIGNATION:          944 9911 TIDAL 2

MONUMENTATION:           Bench Mark disk                       VM#:        21714
AGENCY:                  United States Coast and Geodetic SurveyIDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   48° 34.2' N (  48.57083)          LONGITUDE: 122° 53.0' W (-122.88378)


The primary bench mark is a disk set in a bedrock outcrop on the E half of a
sand and gravel beach W of the ferry dock, 46.80 m (153.5 ft) SE of the rock
face at the W end of the beach, 36.92 m (121.1 ft) WNW of ferry dock, 22.32 m
(73.2 ft) ESE of 'Keep Out Authorized Personnel Only' sign, 6.60 m (21.7 ft) N
of tree clump at vegetation line, 1.90 m (6.2 ft) SE of W side of top of rock
and 2 m (6.6 ft) above the beach.

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

                                                                                
Station ID: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


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


                         BENCH MARK STAMPING:  TIDAL 5 1964 RESET 1996
                         DESIGNATION:          944 9911 TIDAL 5 RESET

MONUMENTATION:           Vertical Control disk                 VM#:        21716
AGENCY:                  United States Coast and Geodetic SurveyIDB PID#:        
SETTING CLASSIFICATION:  Concrete base of light post           OPUS PID:        
LATITUDE:   48° 34.2' N (  48.57017)          LONGITUDE: 122° 53.0' W (-122.88378)


The mark is a disk set in a concrete base for a light pole S of the ferry
terminal building along the sidewalk, 11.37 m (37.3 ft) SSE of a ferry loading
sign, 2.98 m (9.8 ft) SSE of a green electric utility box, 2.20 m (7.2 ft) NW of
a rock face, 1.83 m (6.0 ft) E of curb face and 0.30 m (1.0 ft) WNW of the light
pole.

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

                                                                                
Station ID: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


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


                         BENCH MARK STAMPING:  GP 28-5 1988
                         DESIGNATION:          GP28 5

MONUMENTATION:           Survey disk                           VM#:        21717
AGENCY:                  Washington Department of TransportationIDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   48° 34.1' N (  48.56906)          LONGITUDE: 122° 53.0' W (-122.88411)


The bench mark is a disk set in concrete monument beneath a metal WS DOT
monument cover that is 0.23 m (0.8 ft) in diameter, 32.01 m (105.0 ft) SSW of a
light pole with signs attached, 18.85 m (61.8 ft) NE of a light pole, 14.82 m
(48.6 ft) SE of the S end of a wooden lane divider, 3.55 m (11.6 ft) NNE of a
small deciduous tree, 0.69 m (2.3 ft) WNW of concrete wall and witness post, and
0.24 m (0.8 ft) below the road.



                         BENCH MARK STAMPING:  TIDAL BM 6 1974
                         DESIGNATION:          944 9911 TIDAL 6

MONUMENTATION:           Tidal Station disk                    VM#:        21718
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   48° 34.2' N (  48.57047)          LONGITUDE: 122° 53.0' W (-122.88336)


The bench mark is a disk set in bedrock outcrop on the E side of the ferry dock
N of the ferry building, 13.42 m (44.0 ft) E of the center of the concrete
retaining wall underneath the ferry dock, 11.80 m (38.7 ft) NNE of the bottom of
a dirt trail from the ferry building down the bluff, 9.03 m (29.6 ft) SE of a
ferry dock piling with concrete footer, and 7.88 m (25.9 ft) NE of vegetation
line.

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

                                                                                
Station ID: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


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


                         BENCH MARK STAMPING:  9911 A 2015
                         DESIGNATION:          944 9911 A

MONUMENTATION:           Bench Mark disk                       VM#:        21719
AGENCY:                  NOS CO-OPS                            IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID#: BBDX20
LATITUDE:   48° 34.2' N (  48.56973)          LONGITUDE: 122° 53.0' W (-122.88299)


The bench mark is a disk set in a bedrock outcrop in a clearing approximately
0.1 km (0.1 mi) SSE of the ferry dock, 13.7 m (44.9 ft) ESE of a 0.8 m (2.6 ft)
diameter evergreen tree whose trunk splits in two, 12.39 m (40.6 ft) N of a 0.5
m (1.6 ft) diameter evergreen tree, 7.4 m (24.3 ft) S of rock ledge above the
water, 4.02 m (13.2 ft) WSW of rock ledge above the water, and 2.63 m (8.6 ft) N
of the high point of the outcrop.

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

                                                                                
Station ID: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


                            T I D A L   D A T U M S 


Tidal datums at UPRIGHT HEAD, PUGET SOUND based on:

     LENGTH OF SERIES:      3 MONTHS
     TIME PERIOD:           August 2015 - October 2015
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9449880 FRIDAY HARBOR, SAN JUAN CHANNEL


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

     MEAN HIGHER HIGH WATER                     MHHW   =  2.389
     MEAN HIGH WATER                            MHW    =  2.193
     MEAN TIDE LEVEL                            MTL    =  1.447
     MEAN SEA LEVEL                             MSL    =  1.408
     MEAN LOW WATER                             MLW    =  0.702
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     2 1947                                      3.849    1.656
     TIDAL 5 1964 RESET 1996                    12.149    9.956
     GP 28-5 1988                               20.159   17.966
     TIDAL BM 6 1974                             2.705    0.512
     9911 A 2015                                 7.726    5.533


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

                                                                                
Station ID: 9449911                         PUBLICATION DATE:  06/16/2016
Name:       UPRIGHT HEAD, PUGET SOUND                         
            WA
NOAA Chart: 18430                           Latitude:   48° 34.3' N (  48.57170)
USGS Quad:  SHAW ISLAND                     Longitude: 122° 53.1' W (-122.88500)


                             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.

Return to Top
Products available at 9449911 Upright Head, WA

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services