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Bench Mark Sheet for 9439099, Wauna OR

Superseded Epoch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Small blue map location marker Unpublished bench mark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  5

                                                                                
Station ID: 9439099                         PUBLICATION DATE:  06/22/2017
Name:       WAUNA, COLUMBIA RIVER                             
            OR
NOAA Chart: 18523                           Latitude:   46°  9.6' N (  46.16000)
USGS Quad:  CATHLAMET                       Longitude: 123° 24.3' W (-123.40500)


To reach the tidal bench marks from U.S. Highway 30 in Wauna, Oregon, follow
signs to Wauna.  Enter the main road to mill and visitors check in.  Obtain pass
for pump house tide gage.  Proceed through gate and make a right past buildings
to waterfront and dock.  Equipment located in metal shed used to house fire
pump.


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


                 PRIMARY BENCH MARK STAMPING:  9099 H 1994
                         DESIGNATION:          943 9099 H

MONUMENTATION:           Tidal Station disk                    VM#:        16658
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete slurry tank                  OPUS PID:        
LATITUDE:   46°  9.7' N (  46.16136)          LONGITUDE: 123° 24.6' W (-123.40956)


The primary bench mark is a disk set flush in a concrete slurry tank on the NW
side of the office building at the north end of the plant, 16.61 m (54.5 ft) NW
of office building, 6.04 m (19.8 ft) south of the telephone pole, 0.21 m (0.7
ft) north of the south corner of the slurry tank, and 0.85 m (2.8 ft) above the
ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                                                
Station ID: 9439099                         PUBLICATION DATE:  06/22/2017
Name:       WAUNA, COLUMBIA RIVER                             
            OR
NOAA Chart: 18523                           Latitude:   46°  9.6' N (  46.16000)
USGS Quad:  CATHLAMET                       Longitude: 123° 24.3' W (-123.40500)


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


                         BENCH MARK STAMPING:  9099 A 1981
                         DESIGNATION:          943 9099 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         8891
AGENCY:                  National Ocean Service (NOS)          IDB PID#:  SC1086
SETTING CLASSIFICATION:  Sea wall                              OPUS PID#: SC1086
LATITUDE:   46°  9.7' N (  46.16164)          LONGITUDE: 123° 24.5' W (-123.40889)


The bench mark is a disk set flush in a concrete sea wall in the SW corner of
the pier on the north corner of the property on the shoreward side of a loading
pier 173.74 m (570 ft) by 36.58 m (120 ft) NW of a transit shed, approximately
12.19 m (40 ft) SE of the standby fire pump house, 16.34 m (53.6 ft) north of a
fire plug, 8.41 m (27.6 ft) west of a telephone pole, 14.63 m (48.0 ft) west of
the concrete footing for a light pole which is also located on the pier, and
0.27 m (0.9 ft) from the west side of the pier footing.



                         BENCH MARK STAMPING:  9099 M 2009
                         DESIGNATION:          943 9099 M

MONUMENTATION:           Tidal Station disk                    VM#:        19446
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID:        
LATITUDE:   46°  9.6' N (  46.16025)          LONGITUDE: 123° 24.6' W (-123.40947)


The bench mark is a disk set flush in the top west corner of a 0.91 m (3 ft) by
3.35 m (11.0 ft) concrete pad supporting a covered stairwell next to the
shipping/ receiving building, 5.7 m (18.7 ft) south of the SW corner of the
shipping/receiving building, 4.35 m (14.3 ft) north of a fire hydrant, 32.55 m
(106.8 ft) east of a metal elevator support on the building opposite of
shipping/receiving, and 0.7 m (2.3 ft) above ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                                                
Station ID: 9439099                         PUBLICATION DATE:  06/22/2017
Name:       WAUNA, COLUMBIA RIVER                             
            OR
NOAA Chart: 18523                           Latitude:   46°  9.6' N (  46.16000)
USGS Quad:  CATHLAMET                       Longitude: 123° 24.3' W (-123.40500)


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


                         BENCH MARK STAMPING:  9099 N 2010
                         DESIGNATION:          943 9099 N

MONUMENTATION:           Tidal Station disk                    VM#:        19815
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete footing                      OPUS PID:        
LATITUDE:   46°  9.6' N (  46.16025)          LONGITUDE: 123° 24.5' W (-123.40753)


The bench mark is a disk set into the top of  the west-southwest edge of the
foundation footing of the Georgia Pacific Warehouse 'W', 12.2 m (40.0 ft) north
of the north corner of the Georgia Pacific NW Converting Building marked with a
door labeled Stores Delivery Point 'WAU 095', 6.67 m (21.9 ft) east of a yellow
fire hydrant labeled "'66", 0.97 m(3.2 ft) SW of the SE side of  Warehouse 'W',
and 0.3 m (1.0 ft) above the road grade.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                                                
Station ID: 9439099                         PUBLICATION DATE:  06/22/2017
Name:       WAUNA, COLUMBIA RIVER                             
            OR
NOAA Chart: 18523                           Latitude:   46°  9.6' N (  46.16000)
USGS Quad:  CATHLAMET                       Longitude: 123° 24.3' W (-123.40500)


                            T I D A L   D A T U M S 


Tidal datums at WAUNA, COLUMBIA RIVER based on:

     LENGTH OF SERIES:      13 YEARS
     TIME PERIOD:           8/02-10/02 & 7/04-9/15 Low Water Months Only
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9439040 ASTORIA, TONGUE POINT, COLUMBIA RIVER


Elevations of tidal datums referred to Columbia River Datum (CRD), in METERS:

     MEAN HIGHER HIGH WATER                     MHHW   =  2.480
     MEAN HIGH WATER                            MHW    =  2.296
     MEAN TIDE LEVEL                            MTL    =  1.424
     MEAN SEA LEVEL                             MSL    =  1.385
     MEAN LOW WATER                             MLW    =  0.552
     MEAN LOWER LOW WATER                       MLLW   =  0.349
     COLUMBIA RIVER DATUM                       CRD    =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MHW         CRD

     9099 H 1994                                 2.229    4.525
     9099 A 1981                                 1.484    3.780
     9099 M 2009                                 1.542    3.838
     9099 N 2010                                 2.245    4.541


Foot Notes:

Columbia River Datum (CRD) is the adopted fixed low water reference plane for
this area. CRD is a U.S. Army Corps of Engineers non-tidal datum defined at
distinct river miles relative to NAVD88, and is used as chart datum above river
mile 23 on the Columbia River. Datums are computed using observations from the
low river stages of the year, generally August through October due to the
masking of the tidal signal from strong seasonal river runoff during other
portions of the year. Depending on river flow, water levels can be significantly
higher than Columbia River Datum. As of 2014, the U.S. Army Corps of Engineers
provided updated offsets for CRD that have been applied to this station. Station
Datum (STND) is no longer set equal to CRD. 

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

                                                                                
Station ID: 9439099                         PUBLICATION DATE:  06/22/2017
Name:       WAUNA, COLUMBIA RIVER                             
            OR
NOAA Chart: 18523                           Latitude:   46°  9.6' N (  46.16000)
USGS Quad:  CATHLAMET                       Longitude: 123° 24.3' W (-123.40500)


                             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 9439099 Wauna, OR

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