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Bench Mark Sheet for 9447729, Marysville 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


To reach the tidal bench marks from Interstate 5 in Everette, WA, go north on
I-5 and take exit # 199 (Marysville).  Turn right (east) on 4th Street to the
intersection with State Street, then turn right (south) on State to 1st Street. 
Turn left (east) on 1st Street, continue to Columbia Avenue.  Turn right (south)
on Columbia and continue to Marysville Public Works Facility at 80 Columbia
Avenue.  Continue south through chain link gates to the maintenance yard and to
the Waste Water treatment facility at 2 Columbia Avenue.  Continue 0.88 km (0.55
mi) south on dike road around sewage pond to a chain link gate on the right. 
Turn through the gate to reach the banks of Ebey Slough.  The tidal bench marks
are located along the slough, and State and Cedar Avenues.  The tide station and
data collection platform was anchored with four anchors on the north side of the
slough.


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


                 PRIMARY BENCH MARK STAMPING:  7729 A 2000
                         DESIGNATION:          944 7729 A

MONUMENTATION:           Flange-encased Rod                    VM#:        16310
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   48°  2.4' N (  48.04000)          LONGITUDE: 122° 10.1' W (-122.16800)


The primary bench mark is flange encased rod located at the corner of small
gated road that turns SE off of dike road around and on the SE side of sewage
settling pond for Marysville Wastewater Treatment plant at 2 Columbia Avenue in
Marysville, WA, south side of dike road and on west side gated road, 15.79 m
(51.8 ft) SE of vertical conduit on 480 volt switchbox, 6.80 m (22.3 ft) west of
south gate post, 4.42 m (14.5 ft) east of centerline of dike road, and between
two orange witness posts.  The bench mark is set 15 cm (0.5 ft) below the
ground, being the top of a 5/8" stainless steel rod driven 36.3 m (119 ft) to
substantial resistance, and encased in an aluminum 5 inch logo cap.

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

                                                                                
Station ID: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


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


                         BENCH MARK STAMPING:  7729 B 2000
                         DESIGNATION:          944 7729 B

MONUMENTATION:           Tidal Station disk                    VM#:        16311
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete vault                        OPUS PID:        
LATITUDE:   48°  2.4' N (  48.04000)          LONGITUDE: 122° 10.1' W (-122.16800)


The bench mark is a disk set at the NW corner and on top of a concrete vault
with metal grate cover for Marysville Waste Water treatment Facility at 2
Columbia Avenue in Marysville, 18.9 m (62.0 ft) NW of the NW corner of the brick
office building of the Tratment facility, 15.18 m (49.8 ft) east of yellow fire
hydrant, 6.86 m (22.5 ft) NE of fire hose bib on north side of the sewage
reservoir, and 0.30 m (1 ft) above the grade of lawn. 



                         BENCH MARK STAMPING:  7729 C 2000
                         DESIGNATION:          944 7729 C

MONUMENTATION:           Tidal Station disk                    VM#:        16312
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   48°  2.4' N (  48.04000)          LONGITUDE: 122° 10.1' W (-122.16800)


The bench mark is a disk set at the NW corner and on top of a concrete
foundation for a 2 ton crane at south side of city of Marysville Water District
maintenance yard at 80 Columbia Avenue in Marysville, 11.92 m (39.1 ft) south of
SE corner of a brick shed, 11.60 m (38.1 ft) NNW of NW corner of sewage pond,
8.99 m (29.5 ft) NE of NE corner of Onan Genset, and 1.43 m (4.7 ft) WNW of 5 m
(5 ft) tall 2 ton crane that is painted yellow.       

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

                                                                                
Station ID: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


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


                         BENCH MARK STAMPING:  ELEV 17.346 FT I 7
                         DESIGNATION:          I7

MONUMENTATION:           Bench Mark disk                       VM#:        16313
AGENCY:                  Unknown                               IDB PID#:  TR0186
SETTING CLASSIFICATION:  Window sill                           OPUS PID:        
LATITUDE:   48°  3.1' N (  48.05170)          LONGITUDE: 122° 10.8' W (-122.18000)


The bench mark is a disk set in top and at the north end of a concrete window
sill of the old ODD fellows building located at the NW corner of the junction of
3rd Street and Cedar Avenue, 33.80 m (110.9 ft) north of the north curb of the
3rd Street, 12.3 m (40.5 ft) west of the center line of the Cedar Avenue, 1.31 m
(4.3 ft) south of the NE corner of the building, about 0.06 m (0.2 ft) higher
than sidewalk, and level with the Avenue.

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

                                                                                
Station ID: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


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


                         BENCH MARK STAMPING:  T 332 1952
                         DESIGNATION:          T 332

MONUMENTATION:           Bench Mark disk                       VM#:        16314
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  TR0184
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   48°  3.2' N (  48.05330)          LONGITUDE: 122° 10.6' W (-122.17700)


The bench mark is a disk set in top of a concrete foundation for the NE steel
leg of the water tank located at the SW corner of the junction of 6th Street and
State Avenue, at the city park, at the city water tank, 19.51 m (64.0 ft) west
of the west curb of the State Avenue, 6.25 m (20.5 ft) south of the south curb
of the 6th Street, 0.21 m (0.7 ft) west of the east corner of the concrete
foundation for the NE steel leg of the water tank,and 0.03 m (0.1 ft) higher
than ground.    

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

                                                                                
Station ID: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


                            T I D A L   D A T U M S 


Tidal datums at EBEY SLOUGH, QWULOOLT, POSSESSION SOUND based on:

     LENGTH OF SERIES:      1 YEAR
     TIME PERIOD:           January 2001 - December 2001
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9447130 SEATTLE, PUGET SOUND


Elevations of tidal datums referred to Mean High Water (MHW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (01/07/2002)         =  0.927
     MEAN HIGHER HIGH WATER                     MHHW   =  0.265
     MEAN HIGH WATER                            MHW    =  0.000
     North American Vertical Datum              NAVD88 = -2.528

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                                MHW

     7729 A 2000                                          0.558
     7729 B 2000                                          1.679
     7729 C 2000                                          1.651
     ELEV 17.346 FT I 7                                   3.906
     T 332 1952                                           5.092


Foot Notes:

The full range of tide was unable to be measured at this location. Therefore,
only the high water datums were calculated.

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

                                                                                
Station ID: 9447729                         PUBLICATION DATE:  09/29/2004
Name:       EBEY SLOUGH, QWULOOLT, POSSESSION SOUND           
            WA
NOAA Chart: 18443                           Latitude:   48°  2.4' N (  48.04000)
USGS Quad:  MARYSVILLE                      Longitude: 122° 10.1' W (-122.16800)


                             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 9447729 Marysville, WA

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