U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) TO REACH THE NOS GAUGING STATION AT STURGEON POINT, ERIE COUNTY, NEW YORK, JERUSALEM CORNERS, FROM THE INTERSECTION OF STATE ROUTE 5 AND STURGEON POINT ROAD, PROCEED WEST ON STURGEON POINT RD FOR APPROX 3.06 KM (1.9 MILES). THE NOS GAUGING STATION IS LOCATED IN STURGEON POINT MARINA ON THE SW CORNER OF PROPERTY. G R E A T L A K E S B E N C H M A R K S PRIMARY BENCH MARK STAMPING: DESIGNATION: 906 3028 WATER MONUMENTATION: Flange-encased Rod VM#: 12796 AGENCY: National Geodetic Survey IDB PID#: NC0430 SETTING CLASSIFICATION: Galvanized steel pipe in sleeve OPUS PID: LATITUDE: 42° 41.1' N ( 42.68533) LONGITUDE: 79° 2.3' W ( -79.03889) The bench mark is a galvanized steel pipe 65.5 m (214.9 ft) NW of y-intersection of Sturgeon Point Road and Larkin Road, 14.9 m (48.9 ft) NE of centerline of Sturgeon Point Road, 8.6 m (28.2 ft) SE of the N most 8-inch diameter steel sign post, 6.8 m (22.3 ft) NW of S fence corner, 4.3 m (14.1 ft) SE of entrance drive, 2.7 m (8.9 ft) S of 8-inch diameter steel sign post, 2.0 m (6.6 ft) WNW of the center of a 54" diameter tree with a witness post 0.6 meters (2.0 ft) below the ground surface, being highest point on top of a stainless steel plug on top of 3/8-inch diameter galvanized steel pipe, 5.8 m (19.0 ft) long, the pipe is encased in a 1-inch diameter steel pipe and the mark is protected by a 5-inch PVC pipe, with an aluminum access cover stamped "Water" surrounded with concrete, with witness post, 12.2 cm below the ground surface.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: NIEMER 1973 DESIGNATION: NIEMER MONUMENTATION: Triangulation Station disk VM#: 12797 AGENCY: National Geodetic Survey IDB PID#: NC0725 SETTING CLASSIFICATION: Concrete Post OPUS PID: LATITUDE: 42° 41.2' N ( 42.68706) LONGITUDE: 79° 2.5' W ( -79.04161) The bench mark is a disk 25.3 m (83.0 ft) NW of power pole number Nl57 N of the road, 11.0 n (36.1 ft) S of the corner of a chain link fence N of the road, 8.2 m (26.9 ft) NE of the center of Sturgeon Point Road, and 2.7 m (8.9 ft) SW of the same chain link fence, set in the top of a concrete post, flush with the ground, with witness post. BENCH MARK STAMPING: 3028 H 1989 DESIGNATION: 906 3028 H MONUMENTATION: Bench Mark disk VM#: 12798 AGENCY: National Ocean Service (NOS) IDB PID#: AB6914 SETTING CLASSIFICATION: Stainless steel rod w/o sleeve OPUS PID: LATITUDE: 42° 41.4' N ( 42.68947) LONGITUDE: 79° 2.7' W ( -79.04528) The bench mark is a disk 274.3 m (899.9 ft) SE of gauge house, 21.7 m (71.2 ft) N of power pole no. 70/225, 13.4 m (44.0 ft) W of 30-inch poplar tree, 6.20 m (20.34 ft) N of centerline of dead end gravel driveway, 6.1 cm below ground level, being a brass disc crimped to a 3.7 m (12.1 ft) stainless steel rod driven into the ground with concrete kick block and 5-inch PVC sleeve with aluminum access lid and witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 3028 J 1989 DESIGNATION: 906 3028 J MONUMENTATION: Bench Mark disk VM#: 12799 AGENCY: National Ocean Service (NOS) IDB PID#: AB6913 SETTING CLASSIFICATION: Stainless steel rod w/o sleeve OPUS PID: LATITUDE: 42° 41.3' N ( 42.68772) LONGITUDE: 79° 2.6' W ( -79.04267) The bench mark is a disk 39.6 m (129.9 ft) N of power pole no. Nyt217, 17.4 m (57.1 ft) E of power pole no. 631/nyt 218, 6.2 m(20.3 ft) NE of centerline of Sturgeon Point Road, 6.1 cm below ground level, being brass disc crimped to a stainless steel rod driven 12.2 m (40.0 ft) to refusal, with concrete kick block and 5-inch PVC sleeve and aluminum access lid and witness post. BENCH MARK STAMPING: 3028 K 1989 DESIGNATION: 906 3028 K MONUMENTATION: Bench Mark disk VM#: 12800 AGENCY: National Ocean Service (NOS) IDB PID#: AB6915 SETTING CLASSIFICATION: Concrete Bulkhead OPUS PID: LATITUDE: 42° 41.5' N ( 42.69094) LONGITUDE: 79° 2.8' W ( -79.04742) The bench mark is a disk 38.8 m (127.3 ft) NW of most NW point of octagonal marina store, 21.1 m (69.2 ft) ENE of top N face of stairs leading to gauge house cell, 0.3 m (1.0 ft) NE of most S end of bulkhead, 0.3 m (1.0 ft) WNW of E face of bulkhead, 0.4 m (1.3 ft) above ground level, being brass disc set in top of concrete bulkhead.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: KENNEDY DESIGNATION: 906 3028 KENNEDY MONUMENTATION: Metal Rod VM#: 12803 AGENCY: National Geodetic Survey IDB PID#: NC0429 SETTING CLASSIFICATION: Copper-clad steel rod w/o sleeve OPUS PID: LATITUDE: 42° 41.3' N ( 42.68914) LONGITUDE: 79° 2.8' W ( -79.04589) The bench mark is a metal rod 23.5 m (77.1 ft) SE of utility pole, 16.5 m (54.1 ft) NW of utility pole no. 223, 16.3 m (53.5 ft) NW of W corner of most S stone gate post, 7.3 m (24.0 ft) NE of centerline of road, 0.5 m (1.6 ft) SW of W corner of most N stone gate post, below the ground surface, being highest point on top of a 5/8-inch diameter copper-coated steel rod, 2.4 m (7.9 ft) long, with 5-inch PVC pipe and aluminum access cover stamped "Kennedy" set flush with the ground and with a concrete kick block and witness post. BENCH MARK STAMPING: PERRY DESIGNATION: 906 3028 PERRY MONUMENTATION: Metal Rod VM#: 12804 AGENCY: National Geodetic Survey IDB PID#: NC0432 SETTING CLASSIFICATION: Copper-clad steel rod w/o sleeve OPUS PID: LATITUDE: 42° 41.3' N ( 42.68892) LONGITUDE: 79° 2.8' W ( -79.04725) The bench mark is a metal rod 20.5 m (67.3 ft) W of the centerline of sturgeon point road, 16.3 m (53.5 ft) NW of a lamp pole, 1.9 m (6.2 ft) NE of NE corner of a bay window, 0.6 m (2.0 ft) NW of N corner of a white frame dwelling and in line with the E face of the house, 18.3 cm below the ground surface, being highest point on top of a 5/8-inch diameter copper coated steel rod, 2.4 m (7.9 ft) long, mark is protected by a 5 inch PVC pipe, with an aluminum access cover stamped "Perry" and concrete kick block with witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 3028 L 1997 DESIGNATION: 906 3028 L MONUMENTATION: Bench Mark disk VM#: 17001 AGENCY: National Ocean Service (NOS) IDB PID#: DE7802 SETTING CLASSIFICATION: Concrete Seawall Bulkhead OPUS PID: LATITUDE: 42° 41.5' N ( 42.69203) LONGITUDE: 79° 2.8' W ( -79.04708) The bench mark is a disk on the NW side of the Sturgeon Point Marina, in top of the center and at the N end of a section of bulkhead that projects N and S (at a point in the bulkhead where it turns and leads to the NE) , 90.6 m (297.2 ft) N of the S end of bulkhead, 67.8 m (222.4 ft) WSW of NE end of bulkhead, 11.6 m (38.1 ft) WNW of a ladder at the inside corner of bulkhead, 1.3 m (4.3 ft) above ground level, being brass disc set in top of concrete bulkhead.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: NIERMER 3 1973 DESIGNATION: NIERMER 3 MONUMENTATION: Reference Mark disk VM#: 18329 AGENCY: National Geodetic Survey IDB PID#: DA1857 SETTING CLASSIFICATION: Top of concrete monument OPUS PID: LATITUDE: 42° 41.3' N ( 42.68803) LONGITUDE: 79° 2.6' W ( -79.04411) The bench mark is a disk 34.65 m (113.68 ft) SE of the centerline of Beechwood Rd where it meets Sturgeon Point Rd, 6.39 m (20.96 ft) SW of the centerline of Sturgeon Point Rd, 0.65 m (2.13 ft) SE of power pole number 64-219, being a brass disc set in top of concrete monument, even with ground surface. 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 7 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) 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 8 of 8 Station ID: 9063028 PUBLICATION DATE: 08/11/2017 Name: STURGEON POINT, LAKE ERIE NY NOAA Chart: 14822 Latitude: 42° 41.5' N ( 42.69131) USGS Quad: ANGOLA Longitude: 79° 2.8' W ( -79.04733) 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/.