U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 9465953 PUBLICATION DATE: 03/20/2017
Name: KINAK BAY
AK
NOAA Chart: 16006 Latitude: 59° 56.9' N ( 59.94753)
USGS Quad: Kuskokwim Bay D-6 Longitude: 164° 12.6' W (-164.21067)
To reach the tidal bench marks from Kipnuk, proceed by boat down the Kuguklik
river for about 15 km (9.3 mi) to the northwest most point of land where the
river channel heads west into the tidal flats and the open ocean. The bench
marks and tide station were located 0.7 km (0.4 mi) east of the northwest most
point.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 5953 A 2016
DESIGNATION: 946 5953 A
MONUMENTATION: Flange-encased Rod VM#: 22008
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: OPUS PID#: BBFG53
LATITUDE: 59° 56.8' N ( 59.94714) LONGITUDE: 164° 12.6' W (-164.20969)
The primary benchmark is a flange encased rod set in line with all the Stations
bench marks, 201 m (659.4 ft) North of the NW corner of a 4 acre lake orientated
North to South, 37.55 m (123.2 ft) SE of the tundra shoreline cliff, and 5.55 m
(18.2 ft) West of a winter trail. The datum point is set 4.0 cm (2 inches)
below ground, Being the top of a stainless steel rod driven 24.38 m (80.0 ft) in
a sleeve extending to a depth of 1.04 m (3.4 ft) and encased in a 7-inch NOS
logo Cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 9465953 PUBLICATION DATE: 03/20/2017
Name: KINAK BAY
AK
NOAA Chart: 16006 Latitude: 59° 56.9' N ( 59.94753)
USGS Quad: Kuskokwim Bay D-6 Longitude: 164° 12.6' W (-164.21067)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 5953 B 2016
DESIGNATION: 946 5953 B
MONUMENTATION: Flange-encased Rod VM#: 22009
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 59° 56.8' N ( 59.94656) LONGITUDE: 164° 12.6' W (-164.20986)
The benchmark is a flange encased rod set in line with all the stations
benchmarks 137.1 m (449.8 ft) North of the NW corner of a 4 acre lake orientated
North to South about 300 m (984.2 ft) from the river's edge, and 2.85 m (9.4 ft)
ESE of a winter trail. The datum point is set 3.0 cm (1 inch) below ground,
being the top of a stainless steel rod driven 18.3 m (60.0 ft) in a sleeve
extending to a depth of 0.96 m (3.1 ft) and encased in a 7-inch NOS logo cover.
BENCH MARK STAMPING: 5953 C 2016
DESIGNATION: 946 5953 C
MONUMENTATION: Flange-encased Rod VM#: 22010
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 59° 56.8' N ( 59.94600) LONGITUDE: 164° 12.6' W (-164.21006)
The benchmark is a flange encased rod set in line with all the stations
benchmarks 77.3 m (253.6 ft) NNW of the NW corner of a 4 acre lake orientated
North to South about 300 m (984.2 ft) from the river's edge, and 3.45 m (11.3
ft) ESE of a winter trail. The datum point is set 5 cm (2 inches) below ground,
being the top of a stainless steel rod driven 24.38 m (80.0 ft) in a sleeve
extending to a depth of 0.97 m (3.2 ft) and encased in a 7-inch NOS logo cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 9465953 PUBLICATION DATE: 03/20/2017
Name: KINAK BAY
AK
NOAA Chart: 16006 Latitude: 59° 56.9' N ( 59.94753)
USGS Quad: Kuskokwim Bay D-6 Longitude: 164° 12.6' W (-164.21067)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 5953 D 2016
DESIGNATION: 946 5953 D
MONUMENTATION: Flange-encased Rod VM#: 22011
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 59° 56.7' N ( 59.94542) LONGITUDE: 164° 12.6' W (-164.21019)
The benchmark is a flange encased rod set in line with all the stations
benchmarks 39.2 m (128.6 ft) West of the NW corner of a 4 acre lake orientated
North to South about 300 m (984.2 ft) from the river s edge, and 3.8 m (12.5 ft)
ESE of a winter trail. The datum point is set 7.5 cm (3 inches) below ground,
being the top of a stainless steel rod driven 24.38 m (80.0 ft) in a sleeve
extending to a depth of 1.1 m (3.6 ft) and encased in a 7-inch NOS logo cover.
BENCH MARK STAMPING: 5953 E 2016
DESIGNATION: 946 5953 E
MONUMENTATION: Flange-encased Rod VM#: 22012
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 59° 56.7' N ( 59.94481) LONGITUDE: 164° 12.6' W (-164.21033)
The benchmark is a flange encased rod set in line with all the stations
benchmarks 75 m (246.1 ft) SW of the NW corner of a 4 acre lake orientated North
to South about 300 m (984.2 ft) from the river s edge, 18.2 m (59.7 ft) West of
of the West shore of the lake, and 17.8 m (58.4 ft) ESE of a winter trail. The
datum point is set 4.0 cm (2 inches) below ground, being the top of a stainless
steel rod driven 24.38 m (80.0 ft) in a sleeve extending to a depth of 1.02 m
(3.3 ft) and encased in a 7-inch NOS logo cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 9465953 PUBLICATION DATE: 03/20/2017
Name: KINAK BAY
AK
NOAA Chart: 16006 Latitude: 59° 56.9' N ( 59.94753)
USGS Quad: Kuskokwim Bay D-6 Longitude: 164° 12.6' W (-164.21067)
T I D A L D A T U M S
Tidal datums at KINAK BAY based on:
LENGTH OF SERIES: 2 MONTHS
TIME PERIOD: July 2016 - August 2016
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9463502 PORT MOLLER, BRISTOL BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 2.862
MEAN HIGH WATER MHW = 2.428
MEAN SEA LEVEL MSL = 1.451
MEAN TIDE LEVEL MTL = 1.393
MEAN LOW WATER MLW = 0.358
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
5953 A 2016 3.351 0.923
5953 B 2016 3.420 0.992
5953 C 2016 3.451 1.023
5953 D 2016 3.440 1.012
5953 E 2016 3.547 1.119
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 9465953 PUBLICATION DATE: 03/20/2017
Name: KINAK BAY
AK
NOAA Chart: 16006 Latitude: 59° 56.9' N ( 59.94753)
USGS Quad: Kuskokwim Bay D-6 Longitude: 164° 12.6' W (-164.21067)
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.