U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
To reach the tidal bench marks from the intersection of US HWY 101 and state HWY
42 south of Coos Bay, follow HWY 42 south for 20.1 km (12.5 mi) past the town of
Coquille to the gravel driveway on the right hand side just before the
intersection with Rink Creek Road, turn right onto the driveway for 99690
Highway 42, drive past the two houses and barn and proceed west 0.3 km (0.2 mi)
on the dirt track road across the field to the gate at an abandoned railroad
grade. Walk west across the railroad grade to the fenced steel piling structure
with wood deck on the river bank. The bench marks are located along the dirt
track access road to the highway. The tide gauge will be attached to the steel
piling structure.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 2436 A 2017
DESIGNATION: 943 2436 A
MONUMENTATION: Flange-encased Rod VM#: 22425
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 43° 9.5' N ( 43.15803) LONGITUDE: 124° 10.9' W (-124.18158)
The primary bench mark is a flange encased rod set near second power pole from
the base of the water intake pier, 21.14 m (69.4 ft) SW of northern driveway
gate post, 19.34 m (63.5 ft) south of a gate post to gas line, 12.36 m (40.6 ft)
east of eastern most fence post around water intake pier, and 0.64 m (2.1 ft)
north of a witness post. The datum point is set 13 cm (5 inches) below grade,
being the top of a stainless steel rod driven 19.5 m (64.0 ft) to refusal, in a
sleeve extending 0.9 m (3.0 ft) and encased in a 7 inch NOS logo cover
containing magnets with concrete kick block.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2436 B 2017
DESIGNATION: 943 2436 B
MONUMENTATION: Flange-encased Rod VM#: 22426
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 43° 9.5' N ( 43.15828) LONGITUDE: 124° 10.8' W (-124.18081)
The bench mark is a flange encased set along a two track road leading from the
residence at 99690 Highway 42 to the Coquille water intake pier, 47.25 m (155.0
ft) ENE of the northern post of gate leading to the water intake pier, 35.03 m
(114.9 ft) NE of power pole 621.418, and 0.22 m (0.7 ft) SE of a witness post.
Datum point is set 4 cm (2 inches) below grade, being the top of a stainless
steel rod driven 19.3 m (63.5 ft) to refusal, in a sleeve extending 0.9 m (3.0
ft) and encased in a 7 inch NOS logo cover containing magnets with concrete kick
block.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2436 C 2017
DESIGNATION: 943 2436 C
MONUMENTATION: Flange-encased Rod VM#: 22427
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 43° 9.5' N ( 43.15867) LONGITUDE: 124° 10.8' W (-124.17983)
The bench mark is a flange encased rod set along the two track driveway leading
to the water intake pier just past a gate leading to a field, 24.89 m (81.7 ft)
SSW of northern post of gate from residence yard, 6.60 m (21.7 ft) north of the
center of two cut off power poles at fence corner, and 0.50 m (1.6 ft) NE of a
witness post. The datum point is set 4 cm (2 inches) below grade, being the top
of a stainless steel rod driven 14.6 m (48.0 ft) to refusal, in a sleeve
extending 0.9 m (3.0 ft) and encased in a 7 inch NOS logo cover containing
magnets with concrete kick block.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2436 D 2017
DESIGNATION: 943 2436 D
MONUMENTATION: Flange-encased Rod VM#: 22428
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: BBFR63
LATITUDE: 43° 9.6' N ( 43.15919) LONGITUDE: 124° 10.8' W (-124.17947)
The bench mark is a flange encased rod set along the fence west of the second
residence at 99690 Highway 42, 38.06 m (124.9 ft) NNE of northern gate post
across path to river, 24.41 m (80.1 ft) NW of northern most corner of red barn,
18.60 m (61.0 ft) WSW of northwestern corner second residence, and 0.34 m (1.1
ft) east of a witness post. The datum point is set 3 cm (1 inch) below grade,
being the top of a stainless steel rod driven 8.5 m (28.0 ft) to refusal, in a
sleeve extending 0.9 m (3.0 ft) and encased in a 7 inch NOS logo cover
containing magnets with concrete kick block.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2436 E 2017
DESIGNATION: 943 2436 E
MONUMENTATION: Flange-encased Rod VM#: 22429
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 43° 9.6' N ( 43.15933) LONGITUDE: 124° 10.7' W (-124.17844)
The bench mark is a flange encased rod set north of the driveway entrance
leading to the residence at 99690 Highway 42, 33.16 m (108.8 ft) ENE of the SE
corner of main residence, 22.53 m (73.9 ft) NW of a Rink Creek Lake Cemetery
road sign, 20.36 NNW of utility pole 621-415, 10.82 m (35.5 ft) ENE of 3 ft (0.9
m) diameter pine tree, and 9.55 m (31.3 ft) SW of western edge of Highway 42
pavement. The datum point is set 7 cm (3 inches) below grade, being the top of a
stainless steel rod driven 9.7 m (32.0 ft) to refusal, in a sleeve extending 0.9
m (3.0 ft) and encased in a 7 inch NOS logo cover containing magnets with
concrete kick block.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
T I D A L D A T U M S
Tidal datums at ENTRANCE TO RINK CREEK, COQUILLE RIVER based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: July 2017 - September 2017
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9432780 CHARLESTON, COOS BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 1.590
MEAN HIGH WATER MHW = 1.373
MEAN TIDE LEVEL MTL = 0.766
MEAN SEA LEVEL MSL = 0.759
MEAN LOW WATER MLW = 0.159
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
2436 A 2017 5.415 4.042
2436 B 2017 3.818 2.445
2436 C 2017 4.308 2.935
2436 D 2017 6.830 5.457
2436 E 2017 8.714 7.341
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 9432436 PUBLICATION DATE: 03/06/2018
Name: ENTRANCE TO RINK CREEK, COQUILLE RIVER
OR
NOAA Chart: 18580 Latitude: 43° 9.5' N ( 43.15792)
USGS Quad: COQUILLE Longitude: 124° 10.9' W (-124.18181)
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.