U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) TO REACH THE NOS GAUGING STATION, IN ROCHESTER, MONROE COUNTY, NEW YORK, FROM THE INTERSECTION OF MANN RD AND BEACH AVE, PROCEED NE ON BEACH AVE FOR APPROX 0.56 KM (0.35 MILE), THE NOAA/NOS WATER LEVEL GAUGING STATION IS A STONE FACED CONCRETE BUILDING LOCATED ON THE LAKE SIDE OF AVENUE ON THE NORTH SIDE OF BEACH AVE. G R E A T L A K E S B E N C H M A R K S PRIMARY BENCH MARK STAMPING: SUB DESIGNATION: 905 2058 SUB MONUMENTATION: Metal Rod VM#: 12748 AGENCY: National Geodetic Survey IDB PID#: OF1082 SETTING CLASSIFICATION: Galvanized steel rod in sleeve OPUS PID: LATITUDE: 43° 16.1' N ( 43.26875) LONGITUDE: 77° 37.6' W ( -77.62617) The bench mark is a galvanized steel rod 19.1 m (62.7 ft) SW of the centerline of Beach Avenue, 13.4 m (44.0 ft) W of W corner of a 6-foot square concrete sewer foundation, 8.5 m (27.9 ft) SW of the SE corner of a 6-foot high cyclone fence, 6.10 cm above the ground surface, being highest point on top of a stainless steel plug on top of a 3/8-inch diameter galvanized steel pipe 6.1 m (20.0 ft) long, the pipe is encased in a 1-inch diameter steel pipe and the mark is protected by a 6-inch diameter concrete pipe with extended PVC sleve and aluminum access cover stamped sub, the datum point is 0.3 feet (9.1 cm) below ground level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 2058 G 1984 DESIGNATION: 905 2058 G MONUMENTATION: Bench Mark disk VM#: 12749 AGENCY: National Ocean Survey IDB PID#: AC6287 SETTING CLASSIFICATION: 6X7 Foot Concrete Pad OPUS PID: LATITUDE: 43° 16.1' N ( 43.26819) LONGITUDE: 77° 37.5' W ( -77.62558) The bench mark is a disk 22.4 m (73.5 ft) E of power pole no. 12b, 21.5 m (70.5 ft) SW of lamp post no. 4849, 6.8 m (22.3 ft) NNW of the center of a Rochester Gas and Electric manhole cover, 5.0 m (16.4 ft) W of the center of manhole cover closest to Beach Ave, 1.9 m (6.2 ft) SE of telephone pole with 3 floodlamps, being the highest point of a bronze disk set in the NE corner of a 1.83 m (6.00 ft) x 2.13 m (6.99 ft) concrete pad near a golf tee. BENCH MARK STAMPING: 2058 J 1990 DESIGNATION: 905 2058 J MONUMENTATION: Bench Mark disk VM#: 12750 AGENCY: National Ocean Service IDB PID#: AC6288 SETTING CLASSIFICATION: Stainless steel rod OPUS PID: LATITUDE: 43° 16.2' N ( 43.26969) LONGITUDE: 77° 37.7' W ( -77.62772) The bench mark is a disk 44.4 m (145.7 ft) SE of power pole no. 148, 32.9 m (107.9 ft) SW of the center of Beach Ave, 3.0 m (9.8 ft) NE of power pole with no numbers (1st pole SW of Beach Ave) and in line with 3 other poles, 15.2 cm below the ground surface, being the top of a NOS disk crimped atop a 5/8 inch stainless steel rod driven 7.9 m (25.9 ft) to refusal, and encased in 4 inch PVC with PVC plug cover and concrete kick block.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 2058 F 1981 DESIGNATION: 905 2058 F MONUMENTATION: Bench Mark disk VM#: 12751 AGENCY: National Ocean Survey IDB PID#: AC6286 SETTING CLASSIFICATION: 8X12 Concrete Slab OPUS PID: LATITUDE: 43° 16.1' N ( 43.26900) LONGITUDE: 77° 37.5' W ( -77.62561) The BM is a disk on the lake side of Beach Ave, 27.9 m (91.5 ft) E of utility pole no. 130, 15.7 m (51.5 ft) SE of NE corner of NOAA/NOS gauge house, 13.0 m (42.7 ft) N of 1.22 m (4.00 ft) diameter tree, being highest point over cross at center of bronze disk set into SW corner of 2.44 m (8.01 ft) x 3.66 m (12.01 ft) concrete slab. BENCH MARK STAMPING: INTAKE DESIGNATION: 905 2058 INTAKE MONUMENTATION: Metal Rod VM#: 12752 AGENCY: National Geodetic Survey IDB PID#: OF1085 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 43° 16.1' N ( 43.26908) LONGITUDE: 77° 37.5' W ( -77.62575) The bench mark is a copper-clad steel rod 32.0 m (105.0 ft) NW of a 1.2 m (4.0 ft) diameter tree, 26.2 m (85.8 ft) NE of center line of Beach Ave, 3.2 m (10.5 ft) SW of W face of water level gauge house, 15.2 cm (0.5 ft) below the ground surface, being highest point on top of a 5/8-inch diameter copper-coated steel rod, 4.3 m (14.0 ft) long, access is through a aluminum access cover stamped intake.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) 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 2058 WINDT MONUMENTATION: Survey disk VM#: 12756 AGENCY: Army Corps of Engineers IDB PID#: OF1086 SETTING CLASSIFICATION: Concrete floor attached to sump OPUS PID: LATITUDE: 43° 16.1' N ( 43.26903) LONGITUDE: 77° 37.5' W ( -77.62575) The BM is a disk inside of the stone faced concrete NOS water level gauge house, 0.9 meters (3.0 ft) W of E wall, 12.2 cm N of door sill, being the highest point, over cross at center of bronze disc set into the concrete floor. BENCH MARK STAMPING: 2058 K 1997 DESIGNATION: 905 2058 K MONUMENTATION: Metal Rod VM#: 17017 AGENCY: National Geodetic Survey IDB PID#: AH9232 SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID: LATITUDE: 43° 16.2' N ( 43.26933) LONGITUDE: 77° 37.7' W ( -77.62806) The bench mark is a stainless steel rod 69.5 m (228.0 ft) SW of the centerline of Beach Ave (this portion of Beach Ave is along the lake), 66.8 meters (219.2 ft) ENE of a nail and washer in a 30 inch lone tree along fence line and on NE side of the water intake/discharge stream, 59.4 m (194.9 ft) SSE of the centerline of Beach Ave, 45.4 m (148.9 ft) SE of nail and washer in power pole (1st pole SW of beach avenue) , 29.9 m (98.1 ft) WSW of nail and washer in W face of a 12 inch tree (SE most tree in a row of 5), 21.5 m (70.5 ft) NNW of edge of Slatter Creek, 21.2 m (69.6 ft) SE of nail and washer in power pole with transformer (2nd pole SW of Beach Ave), driven 10.1 m (33.1 ft) to refusal with aluminum access cover flush with the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: BATH HOUSE 1960 KHF DESIGNATION: BATH HOUSE MONUMENTATION: Survey disk VM#: 17021 AGENCY: IDB PID#: OF1088 SETTING CLASSIFICATION: OPUS PID: LATITUDE: 43° 15.5' N ( 43.25830) LONGITUDE: 77° 36.5' W ( -77.60830) BENCH MARK STAMPING: 331 DESIGNATION: 331 MONUMENTATION: Survey disk VM#: 17022 AGENCY: IDB PID#: SETTING CLASSIFICATION: OPUS PID: LATITUDE: 43° 15.7' N ( 43.26170) LONGITUDE: 77° 36.9' W ( -77.61500)
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: NO 1 MONUMENTATION: Chiseled Circle VM#: 17023 AGENCY: IDB PID#: OF1091 SETTING CLASSIFICATION: OPUS PID: LATITUDE: 43° 15.2' N ( 43.25330) LONGITUDE: 77° 36.6' W ( -77.61000)
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 9 Station ID: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: WL 129 1935 MCK DESIGNATION: WL 129 MONUMENTATION: Survey disk VM#: 17024 AGENCY: IDB PID#: OF1092 SETTING CLASSIFICATION: OPUS PID: LATITUDE: 43° 15.0' N ( 43.25000) LONGITUDE: 77° 36.9' W ( -77.61500) 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: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) 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: 9052058 PUBLICATION DATE: 08/11/2017 Name: ROCHESTER, LAKE ONTARIO NY NOAA Chart: 14815 Latitude: 43° 16.1' N ( 43.26903) USGS Quad: Longitude: 77° 37.5' W ( -77.62575) 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/.