NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Bench Mark Sheet for 9075035, Essexville MI

Superseded Epoch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Small blue map location marker Unpublished bench mark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  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


TO REACH THE NOS GAUGING STATION IN ESSEXVILLE, BAY COUNTY, MICHIGAN, FROM THE
INTERSECTION OF YOUNG DITCH RD AND PINE ST, PROCEED NORTH ON PINE ST FOR APPROX
3.35 MILE (5.39 KM) TO THE CONSUMERS POWER COMPANY, WEADOCK POWER PLANT, THENCE
1.6 KILOMETERS (1.00 MI) ALONG THE ASPHALT DRIVE TO THE MAIN J.C. WEADOCK PLANT
NEAR THE WATERS EDGE, AND THE NOAA GAUGE HOUSE LOCATED ON THE EAST SIDE OF THE
SAGINAW RIVER.


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


                 PRIMARY BENCH MARK STAMPING:  5035 G 1990
                         DESIGNATION:          907 5035 G

MONUMENTATION:           Bench Mark disk                       VM#:        13052
AGENCY:                  National Ocean Survey                 IDB PID#:  AC6034
SETTING CLASSIFICATION:  Stainless steel rod w/o sleeve        OPUS PID:        
LATITUDE:   43° 38.5' N (  43.64153)          LONGITUDE:  83° 50.7' W ( -83.84469)


The primary bench mark is a disk 32.9 m (107.9 ft) NW of the NW corner of a one
story double-wide training trailer, 21.5 m (70.5 ft) West of centerline of road
leading to parking lot, 18.4 m (60.4 ft) NE of 0.8 m (2.6 ft) diameter Dutch elm
tree, 5.9 m (19.4 ft) SSE of inside of parking lot curb, being highest point of
standard NOS bench mark disk, crimped atop a 15.8 m (51.8 ft) stainless steel
rod, encased in concrete kick block with 4-inch PVC pipe and cap.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  CON 1947 GER
                         DESIGNATION:          907 5035 CON

MONUMENTATION:           Survey disk                           VM#:        13047
AGENCY:                  US Lake Survey                        IDB PID#:  OJ0526
SETTING CLASSIFICATION:  Building                              OPUS PID:        
LATITUDE:   43° 38.4' N (  43.64078)          LONGITUDE:  83° 50.7' W ( -83.84561)


The bench mark is a disk on the Consumers Power Company, Weadock Power Plant set
in the North face of the main building, on West side of entrance, 13.85 m (45.44
ft) SSE of flagpole, 8.8 m (28.9 ft) ENE of East face of West wing of building,
3.4 m (11.2 ft) WSW of center of building entrance door, 1.0 m (3.3 ft) above
the ground, being horizontal line of cross at center of bronze disk set into the
foundation.



                         BENCH MARK STAMPING:   
                         DESIGNATION:          907 5035 DISC

MONUMENTATION:           Bench Mark disk                       VM#:        13048
AGENCY:                  Army Corps of Engineers               IDB PID#:        
SETTING CLASSIFICATION:  Foundation on gauge house             OPUS PID:        
LATITUDE:   43° 38.5' N (  43.64100)          LONGITUDE:  83° 50.8' W ( -83.84633)


The bench mark is a disk set flush with the surface of the concrete foundation
on the NE corner of the red brick water level gauge house, 8.00 m (26.25 ft)
West from center of street, 2.48 m (8.14 ft) North from South corner of gauge
house, and 0.15 m (0.49 ft) East from face of gauge house.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  U.S.L.S. B.M. LEG 1947
                         DESIGNATION:          907 5035 LEG

MONUMENTATION:           Bolt                                  VM#:        13049
AGENCY:                                                        IDB PID#:  OJ0523
SETTING CLASSIFICATION:  Building                              OPUS PID:        
LATITUDE:   43° 38.5' N (  43.64106)          LONGITUDE:  83° 50.8' W ( -83.84611)


The bench mark is a bolt set on downstream bent of two supporting conveyor
leading to the power plant building, 25.7 m (84.3 ft) NNW of centerline of road
leading to gauge house, 20.9 m (68.6 ft) East of the SE corner of brick gauge
house, 3.55 m (11.65 ft) SSE of SW corner of a brick garage, 0.43 m (1.41 ft)
above concrete footing of West leg of the bent, being highest point in square
field in top of the NW anchor bolt.



                         BENCH MARK STAMPING:  907 3035 FS 9
                         DESIGNATION:          907 5035 FS 9

MONUMENTATION:           Metal Rod                             VM#:        13050
AGENCY:                  National Geodetic Survey              IDB PID#:  OJ0522
SETTING CLASSIFICATION:  Iron rod                              OPUS PID:        
LATITUDE:   43° 38.5' N (  43.64175)          LONGITUDE:  89° 50.8' W ( -89.84589)


The bench mark is an iron rod at the upstream end and on river side of long shed
over conveyor leading from the coal stock pile, 9.40 m (30.84 ft) NE of SE
corner of aluminum-sided garage running parallel to river, 0.20 m (0.66 ft)
North from the top of the concrete step at entrance to door, 0.18 m (0.59 ft)
West from river face of shed, 0.15 m (0.49 ft) North from concrete landing at
doorway, below the ground, being highest point on top of a 1 1/4 inch diameter
iron rod, 4.90 m (16.08 ft) long, 5-inch PVC kick block and aluminum access
cover with concrete flush with ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  5035 H 1992
                         DESIGNATION:          907 5035 H

MONUMENTATION:           Bench Mark disk                       VM#:        13053
AGENCY:                  National Ocean Survey                 IDB PID#:  AC6035
SETTING CLASSIFICATION:  Stainless steel rod w/o sleeve        OPUS PID:        
LATITUDE:   43° 38.4' N (  43.63956)          LONGITUDE:  83° 50.5' W ( -83.84200)


The bench mark is a disk 12.2 m (40.0 ft) SW of centerline of main plant road,
11.85 m (38.88 ft) West of centerline of entrance road, 6.0 m (19.7 ft) ENE of
most East rail of railroad track, 1.5 m (4.9 ft) East of light pole, being
highest point of standard bench mark disk, crimped atop a 12.5 m (41.0 ft)
stainless steel rod, encased in concrete kick block with 5-inch PVC pipe and
cover.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  ESSEX A 1994
                         DESIGNATION:          ESSEX A

MONUMENTATION:           Flange-encased Rod                    VM#:        13056
AGENCY:                  National Geodetic Survey              IDB PID#:  AA8053
SETTING CLASSIFICATION:  Stainless steel rod in sleeve         OPUS PID:        
LATITUDE:   43° 37.7' N (  43.62847)          LONGITUDE:  83° 50.3' W ( -83.83828)


The bench mark is a stainless steel rod set in the back yard of the US Army
Corps of Engineers and near a tower, 52.9 m (173.6 ft) NW of the NW corner of a
concrete boat ramp, 46.1 m (151.2 ft) West of the West edge of the paved parking
lot, 41.2 m (135.2 ft) WSW of the SW corner of the maintenance building, 24.1 m
(79.1 ft) South of the North perimeter fence, and 9.2 m (30.2 ft) East of the
rock line along the river, BM is a punch hole top center on a steel rod encased
in a 6-inch PVC sleeve with aluminum cap 1 cm below ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  ESSEX B 1994
                         DESIGNATION:          ESSEX B

MONUMENTATION:           Flange-encased Rod                    VM#:        13057
AGENCY:                  National Geodetic Survey              IDB PID#:  AA8054
SETTING CLASSIFICATION:  Stainless steel rod in sleeve         OPUS PID:        
LATITUDE:   43° 37.7' N (  43.62758)          LONGITUDE:  83° 50.2' W ( -83.83633)


The bench mark is a stainless steel rod set in the grass near the front gate to
the USCG, 23.6 m (77.4 ft) ESE of a utility pole with light and transformer, and
22.9 m (75.1 ft) ENE of a telephone pedestal, 11.0 m (36.1 ft) West of the
centerline of Weadock road, 9.0 m (29.5 ft) NNW of a utility pole with light,
1.0 m (3.3 ft) South of the South edge of the South curb leading to the USCG,
and 1.0 m (3.3 ft) East of witness post. BM is a punch hole top center on a
steel rod encased in a PVC sleeve with aluminum cap set flush with the ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


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


                         BENCH MARK STAMPING:  YACHT USLS CBF 1960
                         DESIGNATION:          YACHT

MONUMENTATION:           Survey disk                           VM#:        13059
AGENCY:                  US Army Corps of Engineers            IDB PID#:  OJ0532
SETTING CLASSIFICATION:  Building                              OPUS PID:        
LATITUDE:   43° 37.5' N (  43.62531)          LONGITUDE:  83° 50.3' W ( -83.83875)


The bench mark is a disk set in the NE corner of a cinderblock building, 10.57 m
(34.68 ft) East of the NW corner of the yacht club building, 4.80 m (15.75 ft)
South of the center of a manhole cover, 0.41 m (1.35 ft) West of NE corner, 4
1/2 ft. above the ground, being horizontal line of cross at center of bronze
disk set into the block.





Foot Notes:

Above marks are published for informational purposes only.  Long term stability
has not been reviewed prior to publication.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


                             D E F I N I T I O N S


The International Great Lakes Datum (IGLD) is the vertical height reference
datum used in the Great Lakes/St. Lawrence River System for engineering,
charting, channel dredging, navigation safety, power generation, and water 
resource management. It is a coordinated datum between the United States and
Canada that ensures both countries are using the same reference for projects
in the Great Lakes basin. The datum origin, or zero, is defined as Mean Sea 
Level at Pointe-au-Pere /Rimouski, Quebec, Canada at the mouth of the 
St. Lawrence River. IGLD requires updating approximately every 25-30 years 
to account for varying changes in the land surface elevations following the 
retreat of the glaciers during the last ice age, referred to as Glacial 
Isostatic Adjustment (GIA). The current IGLD 1985 was implemented in 1992.

IGLD 1985 uses dynamic heights as the vertical reference standard and lakes
station water level elevations are adjusted to provide a level geopotential
plane for lake level reference.

Dynamic height is the potential difference along the plumbline between the 
vertical datum and a point of interest divided by a constant value of 
gravity. In Canada and USA, the constant value of gravity is the 
"normal gravity" on the ellipsoid at latitude 45 (9.806199 ms-2). Dynamic 
heights have no geometric meaning. They are mainly used for the management 
of water in large lakes, rivers and channels. The surface of a lake has a 
constant dynamic height if undisturbed by currents, winds, atmospheric 
pressure, etc.

The Hydraulic Corrector (HC) is the difference in the long term water level 
mean between Subordinate and Master station. The difference (HC) is 
subtracted algebraically at the subordinate gauge referencing the same 
elevation as the master station. Thus all water levels on a given lake can 
be referenced to the same lakes LWD/Chart Datum reference elevation.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  9 of  9

                                                                                
Station ID: 9075035                         PUBLICATION DATE:  08/11/2017
Name:       ESSEXVILLE, LAKE HURON                            
            MI
NOAA Chart: 14867                           Latitude:   43° 38.4' N (  43.64040)
USGS Quad:                                  Longitude:  83° 50.8' W ( -83.84680)


                             D E F I N I T I O N S


A Master Stations is the control point for determining water level 
elevations on a particular lake of the Great Lakes.   Since water surfaces
of the Great Lakes are considered to be at geopotential equal, all Mean 
Water Level (MWL) values for stations on a particular lake should have the 
same dynamic height.  Therefore, all subordinate water level station MWL 
values are adjusted to match the dynamic water level elevation of the Master
Station through the use of a hydraulic corrector.  In the establishment of 
International Great Lakes Datum (1985) the connecting waterways station 
dynamic elevations were calculated through the use of a linear regression 
while constraining the end points of the regression with the dynamic 
elevations of the corresponding master station above and below the 
connecting channel.

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 toNAVD88 are available from NGS through the World Wide 
Web at National Geodetic Survey.

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/.


Return to Top
Products available at 9075035 Essexville, MI

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services