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Bench Mark Sheet for 9443551, Jim Creek

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9443551                         PUBLICATION DATE:  12/05/2016
Name:       JIM CREEK, STRAIT OF JUAN DE FUCA                 
            WA
NOAA Chart: 18460                           Latitude:   48° 11.2' N (  48.18722)
USGS Quad:  PYSHT                           Longitude: 124°  3.8' W (-124.06250)


To reach the tide station from the Port Angeles ferry terminal proceed SE on
East Railroad Avenue for 0.2 km (0.1 mi) to the intersection with North Lincoln
Street, turn right and proceed south on North Lincoln Street for 1.6 km (1.0
mi), continue as the road bends to the west and changes name to West Lauridsen
Boulevard and Highway 101, proceed west on West Lauridsen Boulevard/Highway 101
for 7.4 km (4.6 mi) to the intersection with WA-112, turn right and proceed west
on WA-112 for 48.1 km (29.9 mi) to a gated private driveway on the right, turn
right and proceed north and east on the private driveway for 0.7 km (0.4 mi)
crossing Jim Creek to the boat basin and the tide station on the east jetty. 
The bench marks are in the private campground.


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


                 PRIMARY BENCH MARK STAMPING:  3551 A 2016
                         DESIGNATION:          944 3551 A

MONUMENTATION:           Flange-encased Rod                    VM#:        21940
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID#: BBFF72
LATITUDE:   48° 11.2' N (  48.18625)          LONGITUDE: 124°  3.7' W (-124.06147)


The primary bench mark is a flange encased rod set in the grass on the NE side
campground, 32.7 m (107.3 ft) ENE of a 35 cm (14 inches) evergreen tree, 16.74 m
(54.9 ft) NE of the NW corner of a shed, 12.74 m (41.8 ft) NW of the NE corner
of a shed, 10.47 m (34.4 ft) N of the N center corner of a shed and 7.15 m (23.5
ft) WSW of the top edge of rock rip rap.  The datum point is set 13 cm (5
inches) below ground, being the top of a stainless steel rod driven 3.6 m (11.8
ft) to refusal, in a sleeve extending to a depth of 0.91 m (3.0 ft) and encased
in a 6-inch (15 cm) NOS logo cap with concrete kick block.

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

                                                                                
Station ID: 9443551                         PUBLICATION DATE:  12/05/2016
Name:       JIM CREEK, STRAIT OF JUAN DE FUCA                 
            WA
NOAA Chart: 18460                           Latitude:   48° 11.2' N (  48.18722)
USGS Quad:  PYSHT                           Longitude: 124°  3.8' W (-124.06250)


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


                         BENCH MARK STAMPING:  3551 B 2016
                         DESIGNATION:          944 3551 B

MONUMENTATION:           Bench Mark disk                       VM#:        21941
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:  Concrete building slab                OPUS PID:        
LATITUDE:   48° 11.1' N (  48.18531)          LONGITUDE: 124°  3.7' W (-124.06183)


The bench mark is a disk set in the concrete slab foundation of an old restroom
building, 11.24 m (36.9 ft) SE of a 1 ft (0.3 m) post, 9.22 m (30.2 ft) S of a
0.9 m (3.0 ft) x 0.9 m (3.0 ft) concrete RV drain, 7.54 m (24.7 ft) N of the NW
corner of an electric utility pedestal concrete base, 2.75 m (9.0 ft) SSW of the
NW corner of the building, and 0.57 m (1.9 ft) ESE of the edge of the concrete
slab.



                         BENCH MARK STAMPING:  3551 C 2016
                         DESIGNATION:          944 3551 C

MONUMENTATION:           Flange-encased Rod                    VM#:        21942
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   48° 11.1' N (  48.18528)          LONGITUDE: 124°  3.8' W (-124.06328)


The bench mark is a flange encased rod set in the toe of the hill in the center
of the S side of the campground, 20.75 m (68.1 ft) SW of the NW corner of a
concrete pad, 11.29 m (37.0 ft) WSW of the SW corner of a concrete pad, 9.80 m
(32.2 ft) SE of an electrical pedestal, 8.81 m (28.9 ft) WNW of the NW corner of
a shed, 0.38 m (1.2 ft) NNE of a witness post.  The datum point is set 10 cm (4
inches) below ground, being the top of a stainless steel rod driven 7.92 m (26.0
ft) to refusal, in a sleeve extending to a depth of 0.91 m (3.0 ft) and encased
in a 6-inch (15 cm) NOS logo cap with concrete kick block.

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

                                                                                
Station ID: 9443551                         PUBLICATION DATE:  12/05/2016
Name:       JIM CREEK, STRAIT OF JUAN DE FUCA                 
            WA
NOAA Chart: 18460                           Latitude:   48° 11.2' N (  48.18722)
USGS Quad:  PYSHT                           Longitude: 124°  3.8' W (-124.06250)


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


                         BENCH MARK STAMPING:  3551 D 2016
                         DESIGNATION:          944 3551 D

MONUMENTATION:           Flange-encased Rod                    VM#:        21943
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   48° 11.2' N (  48.18603)          LONGITUDE: 124°  3.9' W (-124.06461)


The bench mark is a flange encased rod set in the top of the N bank of the
campground W of Jim Creek, 34.49 m (113.2 ft) NW of the S group of log posts,
24.16 m (79.3 ft) NNW of the NW corner of a shed, 16.8 m (55.1 ft) ENE of a
water spigot, 3.46 m (11.4 ft) E of a 0.36 m (1.2 ft) log post for a rope fence,
and 0.69 m (2.3 ft) NW of a 0.36 m (1.2 ft) log post for a rope fence. The datum
point is set 8 cm below ground, being the top of a stainless steel rod driven
3.96 m (13.0 ft) to refusal, in a sleeve extending to a depth of 0.91 m (3.0 ft)
and encased in a 6-inch (15 cm) NOS logo cap with concrete kick block.



                         BENCH MARK STAMPING:  3551 E 2016
                         DESIGNATION:          944 3551 E

MONUMENTATION:           Bench Mark disk                       VM#:        21944
AGENCY:                  National Ocean Service                IDB PID#:        
SETTING CLASSIFICATION:  Concrete slab                         OPUS PID:        
LATITUDE:   48° 11.1' N (  48.18564)          LONGITUDE: 124°  3.8' W (-124.06383)


The bench mark is a disk set in a 4.30 m (14.1 ft) x 12.0 m (39.4 ft)  concrete
pad just E of Jim Creek, 27.3 m (89.6 ft) SSW of the centerline of the gravel
driveway, 22.92 m (75.2 ft) NW of a water spigot, 14.84 m (48.7 ft) WSW of the
SE corner of stone rip rap, 1.77 m (5.8 ft) W of a 10 cm (4 inches) PVC sewer
cleanout, 0.40 m (1.3 ft) ESE of the NW corner of the concrete pad, and 0.4 m
(1.3 ft) above the ground.

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

                                                                                
Station ID: 9443551                         PUBLICATION DATE:  12/05/2016
Name:       JIM CREEK, STRAIT OF JUAN DE FUCA                 
            WA
NOAA Chart: 18460                           Latitude:   48° 11.2' N (  48.18722)
USGS Quad:  PYSHT                           Longitude: 124°  3.8' W (-124.06250)


                            T I D A L   D A T U M S 


Tidal datums at JIM CREEK, STRAIT OF JUAN DE FUCA based on:

     LENGTH OF SERIES:      3 MONTHS
     TIME PERIOD:           June 2016 - August 2016
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9444090 PORT ANGELES, STRAIT OF JUAN DE FUCA


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

     MEAN HIGHER HIGH WATER                     MHHW   =  2.189
     MEAN HIGH WATER                            MHW    =  1.983
     MEAN SEA LEVEL                             MSL    =  1.239
     MEAN TIDE LEVEL                            MTL    =  1.234
     MEAN LOW WATER                             MLW    =  0.486
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     3551 A 2016                                 5.984    4.001
     3551 B 2016                                 5.181    3.198
     3551 C 2016                                 7.311    5.328
     3551 D 2016                                 6.513    4.530
     3551 E 2016                                 7.352    5.369


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

                                                                                
Station ID: 9443551                         PUBLICATION DATE:  12/05/2016
Name:       JIM CREEK, STRAIT OF JUAN DE FUCA                 
            WA
NOAA Chart: 18460                           Latitude:   48° 11.2' N (  48.18722)
USGS Quad:  PYSHT                           Longitude: 124°  3.8' W (-124.06250)


                             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 9443551 Jim Creek,

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