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

Bench Mark Sheet for 9447773, Tulalip, Tulalip Bay 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


To reach from the intersection of I-90 and I-5 in Seattle, proceed north to exit
199.  Turn left on Marine Drive for 5.7 mi (9.2 km) turn left on 76th place NW
0.1 mi (0.2 km) to a left on an unnamed road, 0.25 mi (0.4 km) to a right into
the marina parking lot.


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


                 PRIMARY BENCH MARK STAMPING:  4 1935
                         DESIGNATION:          944 7773 4

MONUMENTATION:           Tidal Station disk                    VM#:        20811
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  DP1176
SETTING CLASSIFICATION:  Dam wall for fish hatchery            OPUS PID:        
LATITUDE:   48°  3.9' N (  48.06536)          LONGITUDE: 122° 17.2' W (-122.28636)


The bench mark is a disk set flush in the top of concrete dam for Tulalip Fish
Hatchery, 36.51 m (119.8 ft) west of a power pole, 12.5 m (41.0 ft) east of
sewer manhole, 4.60 m (15.1 ft) north of the centerline of road, and 0.52 m (1.7
ft) higher than the sidewalk.

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

                                                                                
Station ID: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


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


                         BENCH MARK STAMPING:  TIDAL BM 8 1974
                         DESIGNATION:          944 7773 TIDAL BM 8

MONUMENTATION:           Tidal Station disk                    VM#:        20812
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DP1178
SETTING CLASSIFICATION:  Conc wall of fish ladder              OPUS PID:        
LATITUDE:   48°  3.9' N (  48.06478)          LONGITUDE: 122° 17.1' W (-122.28539)


The bench mark is a disk set flush on top of the south wall of the fish ladder
for the Tulalip Fish Hatchery, 8.03 m (26.3 ft) east of west end of fish ladder,
4.82 m (15.8 ft) north of a wood light pole, 1.80 m (5.9 ft) west of chain-link
fence at east side of property, 0.25 m (0.8 ft) north of chain-link fence on
south wall of fish ladder, and 0.65 m (2.1 ft) above ground.



                         BENCH MARK STAMPING:  TIDAL BM 7 1974
                         DESIGNATION:          944 7773 TIDAL BM 7

MONUMENTATION:           Tidal Station disk                    VM#:        20813
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DP1177
SETTING CLASSIFICATION:  Dam wall of fish hatchery             OPUS PID:        
LATITUDE:   48°  3.9' N (  48.06481)          LONGITUDE: 122° 17.1' W (-122.28567)


The bench mark is a disk set flush on top of the east dam wall for the Tulalip
Fish Hatchery, 15.67 m (51.4 ft) NW of a power pole and electric meter, 12.60 m
(0.7 ft) west of a wood light pole, and 3.14 m (10.3 ft) SW of SW support beam
for lift platform.

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

                                                                                
Station ID: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


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


                         BENCH MARK STAMPING:  5 1935
                         DESIGNATION:          944 7773 5

MONUMENTATION:           Tidal Station disk                    VM#:        20814
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  DP1175
SETTING CLASSIFICATION:  Flagpole foundation                   OPUS PID:        
LATITUDE:   48°  3.9' N (  48.06525)          LONGITUDE: 122° 17.1' W (-122.28581)


The bench mark is a disk set flush in a concrete foundation for a now missing
flagpole in the yard of an abandoned wood building with address 7615, 11.5 m
(37.7 ft) east of east end of concrete dam, 7.48 m (24.5 ft) north of north edge
of road, and 6.89 m (22.6 ft) NW of NW corner of building.



                         BENCH MARK STAMPING:  7963 A 2013
                         DESIGNATION:          944 7773 A

MONUMENTATION:           Tidal Station disk                    VM#:        20815
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DP1174
SETTING CLASSIFICATION:  Concrete stairs                       OPUS PID:        
LATITUDE:   48°  3.8' N (  48.06264)          LONGITUDE: 122° 16.8' W (-122.27936)


The bench mark is a disk set flush in the top step of a concrete stairs between
the bathrooms and Tulalip Fisheries building, 3.54 m (11.6 ft) west of a power
pole, 1.95 m (6.4 ft) NE of N handrail of ramp to floating dock, and 1.05 m (3.4
ft) east of SE corner of Tulalip Fisheries building.

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

                                                                                
Station ID: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


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


                         BENCH MARK STAMPING:  7963 B 2013
                         DESIGNATION:          944 7773 B

MONUMENTATION:           Tidal Station disk                    VM#:        20816
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  DP1173
SETTING CLASSIFICATION:  Concrete stairs                       OPUS PID#: DP1173
LATITUDE:   48°  3.7' N (  48.06169)          LONGITUDE: 122° 16.7' W (-122.27847)


The bench mark is a disk set flush in bottom concrete step of stairs to boat
ramp from south end of parking lot, 27.15 m (89.1 ft) south of top of ramp where
it meets parking lot, 3.75 m (12.3 ft) NE of centerline of ramp, and 1.95 m (6.4
ft) NW of wood power and light pole.

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

                                                                                
Station ID: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


                            T I D A L   D A T U M S 


Tidal datums at TULALIP, TULALIP BAY based on:

     LENGTH OF SERIES:      4 MONTHS
     TIME PERIOD:           August 2013 - November 2013
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9447130 SEATTLE, PUGET SOUND


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

     MEAN HIGHER HIGH WATER                     MHHW   =  3.371
     MEAN HIGH WATER                            MHW    =  3.116
     MEAN TIDE LEVEL                            MTL    =  1.981
     MEAN SEA LEVEL                             MSL    =  1.974
     MEAN LOW WATER                             MLW    =  0.847
     North American Vertical Datum              NAVD88 =  0.622
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     4 1935                                     12.440    9.324
     TIDAL BM 8 1974                             6.386    3.270
     TIDAL BM 7 1974                             5.663    2.547
     5 1935                                     13.254   10.138
     7963 A 2013                                 5.702    2.586
     7963 B 2013                                 4.554    1.438


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

                                                                                
Station ID: 9447773                         PUBLICATION DATE:  07/14/2015
Name:       TULALIP, TULALIP BAY                              
            WA
NOAA Chart: 18443                           Latitude:   48°  3.9' N (  48.06500)
USGS Quad:  TULALIP                         Longitude: 122° 17.3' W (-122.28800)


                             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 9447773 Tulalip, Tulalip Bay, WA

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