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Bench Mark Sheet for 9465953, Kinak Bay AK

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 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.

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Products available at 9465953 Kinak Bay, AK

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