Bench Mark Sheet for 9063007, Ashland Ave NY

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9063007                         PUBLICATION DATE:  08/11/2017
Name:       ASHLAND AVE., NIAGARA FALLS, NIAGARA R.           
            NY
NOAA Chart: 14822                           Latitude:   43°  6.0' N (  43.09992)
USGS Quad:                                  Longitude:  79°  3.6' W ( -79.05992)


TO REACH THE NOS GAUGING STATION AT ASHLAND AVENUE, NIAGARA FALLS, NEW YORK, ON
THE WESTERLY SIDE OF ROBERT MOSES PARKWAY, BETWEEN EXTENDED CENTERLINES OF
ASHLAND AND ELMWOOD AEVENUES, AT THE LOWER LEVEL OF NIAGARA FALLS DISPOSAL
PLANT,GAUGE HOUSE IS LOCATED NEAR WATERS EDGE.


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


                 PRIMARY BENCH MARK STAMPING:  POOL 1958
                         DESIGNATION:          906 3007 POOL

MONUMENTATION:           Bench Mark disk                       VM#:        12758
AGENCY:                  Army Corps of Engineers               IDB PID#:  OG0229
SETTING CLASSIFICATION:  Concrete gauge house                  OPUS PID:        
LATITUDE:   43°  6.0' N (  43.09992)          LONGITUDE:  79°  3.6' W ( -79.05992)


The bench mark is a disk 7.8 meters (25.6 ft) NE of the NW corner of concrete
lower contact tank, 1.4 meters (4.6 ft) above the doorsill, 18.3 cm E of the E
side of doorway and on south face of the concrete gauge house, being a
horizontal line of cross on bronze disc set into the concrete,set vertical in
the face of the gauge house enclosure to the right of door.

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

                                                                                
Station ID: 9063007                         PUBLICATION DATE:  08/11/2017
Name:       ASHLAND AVE., NIAGARA FALLS, NIAGARA R.           
            NY
NOAA Chart: 14822                           Latitude:   43°  6.0' N (  43.09992)
USGS Quad:                                  Longitude:  79°  3.6' W ( -79.05992)


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


                         BENCH MARK STAMPING:  ASH 1976
                         DESIGNATION:          906 3007 ASH

MONUMENTATION:           Bench Mark disk                       VM#:        12759
AGENCY:                  National Ocean Survey                 IDB PID#:  OG0342
SETTING CLASSIFICATION:  Tank                                  OPUS PID:        
LATITUDE:   43°  6.0' N (  43.09992)          LONGITUDE:  79°  3.6' W ( -79.06008)


The bench mark is a disk 4.7 meters (15.4 ft) NW of the NW face of second tank
from the bottom, 1.3 meters (4.3 ft) S of S corner of walkway leading to gage
house, 0.9 meters (3.0 ft) SE of NW face, 0.9 meters (3.0 ft) NE of SW face of
lower contact tank, being highest point over line in center of bronze national
ocean survey disk, set in the top of the last concrete tank landing by the last
set of stairs to the gage house enclosure.



                         BENCH MARK STAMPING:  OUTFALL 1976
                         DESIGNATION:          906 3007 OUTFALL

MONUMENTATION:           Bench Mark disk                       VM#:        12760
AGENCY:                  National Ocean Survey                 IDB PID#:  OG0340
SETTING CLASSIFICATION:  Concrete shaft                        OPUS PID:        
LATITUDE:   43°  6.0' N (  43.09950)          LONGITUDE:  79°  3.6' W ( -79.06019)


The bench mark is a disk 48.8 meters (160.1 ft) SW of water level gauge house,
14.5 meters (47.6 ft) SE of concrete retaining wall supporting outfall from
pumping station, on top of N corner of a 6' x 7' foot concrete access shaft to
outfall, 10.67 meters from NE face of concrete shaft, 9.75 meters from NW face,
1.3 meters (4.3 ft) above the ground surface, being highest point over cross at
center of bronze disk set into the top of the concrete shaft directly across the
grassy slope from the gauging station.

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

                                                                                
Station ID: 9063007                         PUBLICATION DATE:  08/11/2017
Name:       ASHLAND AVE., NIAGARA FALLS, NIAGARA R.           
            NY
NOAA Chart: 14822                           Latitude:   43°  6.0' N (  43.09992)
USGS Quad:                                  Longitude:  79°  3.6' W ( -79.05992)


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


                         BENCH MARK STAMPING:  3007 E 1977
                         DESIGNATION:          906 3007 E

MONUMENTATION:           Bench Mark disk                       VM#:        12761
AGENCY:                  National Ocean Survey                 IDB PID#:  OG0339
SETTING CLASSIFICATION:  Concrete tank                         OPUS PID:        
LATITUDE:   43°  6.0' N (  43.09922)          LONGITUDE:  79°  3.6' W ( -79.06033)


The bench mark is a disk 91.4 meters (299.9 ft) S of the water level gauge
house, on top of the upstream set of concrete tanks, 4.8 meters (15.7 ft) SE of
the NW face of tank, 3.0 meters (9.8 ft) NE of the SW face of the tank, 0.7
meters (2.3 ft) SW of the SE corner of the second tank from the top, being
highest point on brass disk set flush into the top of the tank.



                         BENCH MARK STAMPING:  WING 1976
                         DESIGNATION:          906 3007 WING

MONUMENTATION:           Bench Mark disk                       VM#:        12762
AGENCY:                  National Ocean Survey                 IDB PID#:  OG0341
SETTING CLASSIFICATION:  Top of wing wall                      OPUS PID:        
LATITUDE:   43°  6.0' N (  43.09947)          LONGITUDE:  79°  3.6' W ( -79.06028)


The bench mark is a disk 11.0 meters (36.1 ft) NE of the SW end of concrete
wall, 0.3 meters (1.0 ft) SE of the NW face of the wall, on centerline and 0.3
meters (1.0 ft) from the downriver end of the wing wall, being highest point
over cross at center of bronze disk set into the top of the concrete wall, set
on the top of the N corner of sewage outfall structure going into the river at
the water's edge





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  4 of  5

                                                                                
Station ID: 9063007                         PUBLICATION DATE:  08/11/2017
Name:       ASHLAND AVE., NIAGARA FALLS, NIAGARA R.           
            NY
NOAA Chart: 14822                           Latitude:   43°  6.0' N (  43.09992)
USGS Quad:                                  Longitude:  79°  3.6' W ( -79.05992)


                             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  5 of  5

                                                                                
Station ID: 9063007                         PUBLICATION DATE:  08/11/2017
Name:       ASHLAND AVE., NIAGARA FALLS, NIAGARA R.           
            NY
NOAA Chart: 14822                           Latitude:   43°  6.0' N (  43.09992)
USGS Quad:                                  Longitude:  79°  3.6' W ( -79.05992)


                             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/.


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