U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
TO REACH THE NOS GAUGE, IN OSWEGO, OSWEGO COUNTY, NY, FROM THE INTERSECTION OF
WEST BRIDGE ST (HWY 104) AND 2ND ST, PROCEED NORTH ON EAST 2ND ST FOR 0.45 MILE
(0.72 KM) TO THE OSWEGO PORT AUTHORITY PROPERTY ENTRANCE, GAUGE IS LOCATED
INSIDE A 6 X 8 FT, ROOM IN THE LOWER SOUTHWEST CORNER OF THE PORT AUTHORITY OF
OSWEGO WAREHOUSE AND ON THE EAST SIDE OF THE OSWEGO 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: LAKE 1948
DESIGNATION: 905 2030 LAKE
MONUMENTATION: Metal Rod VM#: 1268
AGENCY: USLS IDB PID#: OF0658
SETTING CLASSIFICATION: Metal rod driven into the ground OPUS PID:
LATITUDE: 43° 28.0' N ( 43.46706) LONGITUDE: 76° 30.5' W ( -76.50900)
BM Lake is about 83.8 m (275 ft) NE of ruins of former Coast Guard boathouse,
between railroad track and stone retaining wall along toe of the hill, about
57.0 m (187 ft) NE of gate in a fence. Bench mark is 10.9 m (35.7 ft) from stone
revetment along the lake shore, 1.2 m (3.8 ft) from most SE rail of the track,
0.3 m (1.0 ft) from face of the stone retaining wall, on line of arrow cut into
second course of stone from top of the retaining wall, flush with the ground
surface, being highest point on top of a 1-inch diameter iron rod, 1.5 m (5.0
ft) long. BM has 5 inch sleeve with aluminum cover and concrete kick block and
0.2m (0.7 ft) below grade.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
G R E A T L A K E S B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: 905 2030 OSWEGO
MONUMENTATION: Bolt VM#: 1272
AGENCY: IDB PID#: OF0657
SETTING CLASSIFICATION: Concrete OPUS PID:
LATITUDE: 43° 27.9' N ( 43.46561) LONGITUDE: 76° 30.7' W ( -76.51119)
BM Oswego is near NE corner of main warehouse building occupied by Port of
Oswego Authority, on the loading dock which is attached to E face of building,
4.7 m (15.5 ft) S of the N edge of the loading dock, 15.2 cm (0.5 ft) from the
NE building corner, loading dock is about 1.2 m (4.0 ft) above the ground, being
highest point over a 1/2-inch diameter steel carriage bolt set into the
concrete.
BENCH MARK STAMPING:
DESIGNATION: 905 2030 WILL
MONUMENTATION: Bolt VM#: 1273
AGENCY: IDB PID#: OF0653
SETTING CLASSIFICATION: Concrete floor OPUS PID:
LATITUDE: 43° 27.9' N ( 43.46436) LONGITUDE: 76° 30.7' W ( -76.51117)
BM Will is on E side of the Oswego River near its mouth, inside of and near the
S end of main warehouse building occupied by the Port of Oswego Authority, 9.1
cm (0.3 ft) from outer angle formed by NE corner of wall dividing two-story
office facilities and general warehouse, being highest point on top of a
1/2-inch diameter steel carriage-bolt set into the concrete floor, mark is a
bolt head, part of which has rusted off, in addition, the concrete around the
mark is cracking.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
G R E A T L A K E S B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: 905 2030 SON
MONUMENTATION: Bolt VM#: 1276
AGENCY: IDB PID#: OF0656
SETTING CLASSIFICATION: Loading dock concrete surface OPUS PID:
LATITUDE: 43° 27.9' N ( 43.46436) LONGITUDE: 76° 30.6' W ( -76.51072)
BM Son is 4.6 m (15.0 ft) N of the S edge of loading dock, loading dock is about
1.2 m (4.0 ft) above the ground, 24.4 cm (0.8 ft) SE from the SE building
corner, being highest point on top of a 1/4-inch diameter steel bolt set into
the concrete loading dock and set flush with the loading dock surface.
BENCH MARK STAMPING:
DESIGNATION: 905 2030 E
MONUMENTATION: Survey disk VM#: 1277
AGENCY: US Army Corps of Engineers (USE) IDB PID#: OF0654
SETTING CLASSIFICATION: Concrete OPUS PID:
LATITUDE: 43° 27.8' N ( 43.46417) LONGITUDE: 76° 30.7' W ( -76.51142)
BM E is 14.5 m (45.7 ft) W of the SW corner of warehouse, 0.6 m (2.0 ft) E of
dock face, being highest point over cross at center of bronze disc set into the
concrete.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
G R E A T L A K E S B E N C H M A R K S
BENCH MARK STAMPING: 2030 J 1997
DESIGNATION: 905 2030 J
MONUMENTATION: Metal Rod VM#: 17014
AGENCY: National Ocean Service IDB PID#: AH9231
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 43° 28.0' N ( 43.46664) LONGITUDE: 76° 30.6' W ( -76.51081)
BM J is 85.5 m (280.6 ft) NE of the NE corner of warehouse, 42.9 m (140.7 ft) W
of center of track switch, 7.5 m (24.6 ft) SE of chiseled X in the top of the
end steel I-beam for guard rail, 4.01 m (13.15 ft) SW of chiseled X in S edge of
S rail for the most N track, 3.8 m (12.6 ft) SE of chiseled X in same track, 2.7
m (8.7 ft) S of chiseled X in same track, 6.0 m (19.7 ft) N of chiseled X in N
edge of N rail of S track, being highest point on top of a stainless steel rod,
the rod is 2 cm below ground with aluminum access cover flush with ground. To
protect the BM, owner of property has put a heavy steel culvert opening with lid
over the mark.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
G R E A T L A K E S B E N C H M A R K S
BENCH MARK STAMPING: D
DESIGNATION: D
MONUMENTATION: Survey disk VM#: 18293
AGENCY: Army Corps of Engineers IDB PID#: DJ5176
SETTING CLASSIFICATION: Unspecified Concrete OPUS PID#: DJ5176
LATITUDE: 43° 27.9' N ( 43.46547) LONGITUDE: 76° 30.7' W ( -76.51211)
BM D is 42.73 meters (140.19 ft) NW of the NW corner of the Ports bldg and
warehouse, 9.30 meters (30.51 ft) W of the E edge of the rounded bulkhead
corner, 8.26 meters (27.10 ft) N of the most N bollard, 0.88 meters (2.89 ft) E
of the W edge of the rounded bulkhead cell.
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 6 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
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 7 of 7
Station ID: 9052030 PUBLICATION DATE: 08/11/2017
Name: OSWEGO, LAKE ONTARIO
NY
NOAA Chart: 14813 Latitude: 43° 27.9' N ( 43.46417)
USGS Quad: OSWEGO WEST Longitude: 76° 30.7' W ( -76.51183)
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/.