U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) TO REACH THE NOS GAUGING STATION AT BUFFALO, ERIE COUNTY, NEW YORK, FROM THE INTERSECTION OF SR-5 AND FUHRMAN BLVD, PROCEED NORTH ON FUHRMAN BLVD FOR 2.3 KM (1.40 MI) TO USCG STATION. GAUGING STATION IS ON SOUTH SIDE OF THE BUFFALO RIVER, NEAR UPRIVER END OF THE COAST GUARD BASE. G R E A T L A K E S B E N C H M A R K S PRIMARY BENCH MARK STAMPING: MACHINE DESIGNATION: 906 3020 MACHINE MONUMENTATION: Flange-encased Rod VM#: 12785 AGENCY: National Geodetic Survey IDB PID#: NC0403 SETTING CLASSIFICATION: Galvanized steel pipe in sleeve OPUS PID: LATITUDE: 42° 52.7' N ( 42.87753) LONGITUDE: 78° 53.3' W ( -78.88797) The bench mark is a galvanized steel pipe in sleeve 29.6 meters (97.1 ft) SSE of NE corner of machine shop, 14.1 meters (46.3 ft) NW of utility pole, 13.4 meters (44.0 ft) E of SE corner and in line with S face of machine shop, 5.0 meters (16.4 ft) N of face of curb, 0.5 meters (1.6 ft) below the ground surface, being highest point on top of a stainless steel plug on top of a 3/8-inch diameter galvanized steel pipe, 4.6 meters (15.1 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 PVC pipe extension and aluminum access cover and concrete kick block, flush with the ground surface with witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 906 3020 BUFFALO LH MONUMENTATION: See descriptive text VM#: 12786 AGENCY: IDB PID#: NC0435 SETTING CLASSIFICATION: WATER TABLE OPUS PID: LATITUDE: 42° 52.7' N ( 42.87783) LONGITUDE: 78° 53.4' W ( -78.88944) The bench mark is on the Old Buffalo Harbor light house, at angle formed by NE and E sides of the octagonal stone water table, 1.20 meters (3.94 ft) S of the centerline of light house door, 0.6 meters (2.0 ft) SE of SE door jamb, 0.81 meters (2.66 ft) above rubble mound on which the light rests, being highest point of knob cut on top of the stone water table. BENCH MARK STAMPING: BASE DESIGNATION: 906 3020 BASE MONUMENTATION: Metal Rod VM#: 12787 AGENCY: National Geodetic Survey IDB PID#: NC0406 SETTING CLASSIFICATION: Copper-clad steel rod w/o sleeve OPUS PID: LATITUDE: 42° 52.6' N ( 42.87672) LONGITUDE: 78° 53.1' W ( -78.88444) The bench mark is a copper-clad steel rod 29.5m (96.8 ft) W of utility pole NM3R, 17.4m (57.1 ft) SE of W galvanized pole for chain link gate entrance, 14.8m (48.6 ft) SE of the E galvanized pole of the gate entrance. 8.7m (28.5 ft) SE of E brick gate post, 5.2m (17.1 ft) SW of the W leg of the Lighthouse Point Park plaque, 4.4m (14.4 ft) E of the centerline of the road leading to the Coast Guard base. 0.3m (1.0 ft) below the ground surface, being highest point on top of a 5/8-inch diameter copper-coated steel rod, 10.1m (33.1 ft) long. With aluminum access cover stamped "base" and concrete kick block set flush with the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 25 1935 DESIGNATION: 906 3020 25 MONUMENTATION: Survey disk VM#: 12788 AGENCY: US Engineers IDB PID#: NC0404 SETTING CLASSIFICATION: ROCK WALL OPUS PID: LATITUDE: 42° 52.7' N ( 42.87767) LONGITUDE: 78° 53.2' W ( -78.88606) The bench mark is a survey disk 50.2m (164.7 ft) NE of the NE corner of a 0.9m (3.0 ft) x 1.2m (3.9 ft) concrete block in field beside a basketball court, 8.8m (28.9 ft) from river face of dockline, on top of a rock wall, 3.7m (12.1 ft) downriver from face of top step of a flight of stone steps, 0.6m (2.0 ft) toward river from the wall centerline, being highest point on top of bronze disc set into top of the wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: A-25 1921 DESIGNATION: A 25 MONUMENTATION: Bench Mark disk VM#: 12789 AGENCY: US Coast and Geodetic Survey IDB PID#: NC0436 SETTING CLASSIFICATION: WATER LEVEL OPUS PID: LATITUDE: 42° 52.7' N ( 42.87789) LONGITUDE: 78° 53.4' W ( -78.88936) The bench mark is a disk on E side of octagonal stone water table, 1.2m (3.9 ft) from angle formed by E and NE sides, 0.60m (1.97 ft) N of the SE corner of light house, 0.60m (1.97 ft) S of NE corner of light house, 0.64m (2.10 ft) above ground being horizontal line on bronze disc set into the water table marked A-25 1921. BENCH MARK STAMPING: DESIGNATION: 658 USE MONUMENTATION: Survey disk VM#: 12791 AGENCY: IDB PID#: NC0405 SETTING CLASSIFICATION: WALL OPUS PID: LATITUDE: 42° 52.7' N ( 42.87831) LONGITUDE: 78° 53.0' W ( -78.88331) To reach the BM 906 3020 Use, in Buffalo, Erie County, New York, from the intersection of SR-5 and Fuhrman Blvd, proceed north on Fuhrman Blvd for 2.3 km (1.40 mi) to Buffalo Coast Guard station, the BM is located on the USCG property, on the south side of Buffalo River near its mouth, about 304.8 meters (1000.0 ft) upriver from coast guard lookout tower, 8.80 meters (28.87 ft) west of the end of the stone retaining wall, 0.80 meters (2.62 ft) from the river face of the wall, being highest point on top of bronze disc set into top of the wall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: Q 410 1977 DESIGNATION: Q 410 MONUMENTATION: Bench Mark disk VM#: 12792 AGENCY: National Geodetic Survey IDB PID#: NC0701 SETTING CLASSIFICATION: PILLAR OPUS PID: LATITUDE: 42° 52.0' N ( 42.86733) LONGITUDE: 78° 52.6' W ( -78.87706) The bench mark is a disk 10.4m (34.1 ft) N of the center of the median island under Highway 5, 8.92m (29.27 ft) W of the most SE concrete support pillars, 0.6m (2.0 ft) E of the most SW concrete support pillar of the overpass, 1.2m (3.9 ft) above ground, in the top of a 9.10m (29.86 ft) long concrete cross tie of 2 pillars. BENCH MARK STAMPING: 3020 G 1995 DESIGNATION: 906 3020 G MONUMENTATION: Bench Mark disk VM#: 12793 AGENCY: National Ocean Service (NOS) IDB PID#: SETTING CLASSIFICATION: Vertically in Gauge House Wall OPUS PID: LATITUDE: 42° 52.6' N ( 42.87744) LONGITUDE: 78° 53.4' W ( -78.89047) The bench mark is a disk set vertically in the E face and at the SE corner of the NOS gauge house, 2.44m (8.01 ft) SE of the SW corner of gauge house, 2.20m (7.22 ft) S of the NE corner of the gauge house, 0.3 m (1.0 ft) N of the SE corner of the gauge house, and 1.50m (4.92 ft) above the ground, being horizontal line of bronze bench mark disk.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 906 3020 SILO MONUMENTATION: Metal Rod VM#: 17002 AGENCY: National Geodetic Survey IDB PID#: NC0700 SETTING CLASSIFICATION: Copper-clad steel rod w/o sleeve OPUS PID: LATITUDE: 42° 52.4' N ( 42.87328) LONGITUDE: 78° 52.9' W ( -78.88142) The bench mark is a copper-clad steel rod on the E side of Fuhrman Blvd, 23.7m (77.8 ft) NW of a fire hydrant, 14.8m (48.6 ft) SE of a power pole numbered 144, 11.2m (36.7 ft) NW of a black metal light pole numbered 152, 5.2m (17.1 ft) NE of the centerline of Fuhrmann Boulevard, 2.7m (8.9 ft) SW of a chain link fence, being the highest point on top of a 5/8-inch copper coated steel rod driven to a depth of 8.53m (28.0 ft) with 5-inch pvc pipe and aluminum access cover stamped 'SILO 1976' surrounded by a concrete kick block flush with the ground. BENCH MARK STAMPING: 3020 H 1997 DESIGNATION: 906 3020 H MONUMENTATION: Metal Rod VM#: 17003 AGENCY: National Geodetic Survey IDB PID#: AH9234 SETTING CLASSIFICATION: Stainless steel rod w/o sleeve OPUS PID: LATITUDE: 42° 52.6' N ( 42.87703) LONGITUDE: 78° 53.4' W ( -78.88983) The bench mark is a stainless steel rod 72.9m (239.2 ft) SSE of the SE corner of the NOAA/NOS water level gauging station, 30.5m (100.1 ft) N of the S side of boat basin wall, 11.2m (36.7 ft) E of the center of the circular drive by gauge house, 0.8 ft (24.4 cm) W of a witness post, 0.2 ft (6.1 cm) below ground surface, being highest point on top of a stainless steel rod, 5.5m (18.0 ft) long. The rod is protected by a 5 inch diameter PVC sleeve 1.2m (3.9 ft) long, the BM is encased in concrete with an aluminum access cover, set flush with the ground surface with witness post.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 9 Station ID: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) 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: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) 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: 9063020 PUBLICATION DATE: 08/11/2017 Name: BUFFALO, LAKE ERIE NY NOAA Chart: Latitude: 42° 52.6' N ( 42.87744) USGS Quad: Longitude: 78° 53.4' W ( -78.89047) 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/.