U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 7 Station ID: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) TO REACH THE NOS GAUGING STATION IN GREEN BAY, BROWN COUNTY, WISCONSIN, FROM THE INTERSECTION OF NORTH BROADWAY AND PRAIRIE AVE, PROCEED WEST ON PRAIRIE AVE FOR 0.56 KM (0.35 MI) TO THE INTERSECTION WITH BYLSBY AVE, THEN PROCEED NORTH ON BYLSBY AVE FOR 0.80 KM (0.50 MI) TO THE ENTRANCE OF THE PULLIAM ELECTRIC PLANT, ON THE EAST SIDE OF 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: DESIGNATION: 908 7078 WIS MONUMENTATION: Bench Mark disk VM#: 13227 AGENCY: Army Corps of Engineers IDB PID#: PN0090 SETTING CLASSIFICATION: Foundation OPUS PID: LATITUDE: 44° 32.5' N ( 44.54119) LONGITUDE: 88° 0.5' W ( -88.00778) The bench mark is a disk set vertically in the North face, of the North wall of the large plant building, 26.40 meters (86.61 ft) SW of the SW leg of a transmission tower, 12.7 meters (41.7 ft) West of the NE corner of the building, 2.33 meters (7.64 ft) East of truck washing area, 1.7 meters (5.6 ft) above the level of the ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 7 Station ID: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 908 7078 LEG MONUMENTATION: Bolt VM#: 13228 AGENCY: IDB PID#: PN0089 SETTING CLASSIFICATION: Tower foundation OPUS PID: LATITUDE: 44° 32.5' N ( 44.54139) LONGITUDE: 88° 0.5' W ( -88.00769) The bench mark is a bolt is 52.9 meters (173.6 ft) West of NOS water level gauging station, 21.6 meters (70.9 ft) North of the NE corner of plant building, 0.9 meters (3.0 ft) above the level of the ground, being a cross cut in the top of a 1 1/2 inch bolt at the base of the West leg of a steel power line tower (the only steel tower at water's edge, on the North side of the large power plant). BENCH MARK STAMPING: DESIGNATION: 908 7078 COAL A MONUMENTATION: Bolt VM#: 13229 AGENCY: IDB PID#: PN0087 SETTING CLASSIFICATION: Concrete wall OPUS PID: LATITUDE: 44° 32.5' N ( 44.54114) LONGITUDE: 88° 0.5' W ( -88.00786) The bench mark is a disk 5.7 meters (18.7 ft) South of the NE corner of the large plant building, set vertically in the East face of the North-South wall 0.18 meters (0.59 ft) South of the South edge of doorway, a cross cut in the end of a 1/4 inch brass bolt 12.2 cm South of the North end of the wall and 1.4 meters (4.6 ft) above the black top ramp.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 7 Station ID: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 7078 E 1978 DESIGNATION: 908 7078 E MONUMENTATION: Bench Mark disk VM#: 13230 AGENCY: National Ocean Survey IDB PID#: PN0840 SETTING CLASSIFICATION: Tower foundation OPUS PID: LATITUDE: 44° 32.5' N ( 44.54097) LONGITUDE: 88° 0.7' W ( -88.01217) The bench mark is a disk 17.75 meters (58.23 ft) SE of center of exit gate, 13.55 meters (44.46 ft) NW of corner of new guard house, 4.20 meters (13.78 ft) NE of center of exit driveway, 0.85 meters (2.79 ft) NE of edge of exit driveway, the bench mark is set in top of the SE corner of the SW concrete foundation leg of a utility power line tower. BENCH MARK STAMPING: 7078 F 1978 DESIGNATION: 908 7078 F MONUMENTATION: Bench Mark disk VM#: 13231 AGENCY: National Ocean Survey IDB PID#: PN0842 SETTING CLASSIFICATION: Concrete pad OPUS PID: LATITUDE: 44° 32.5' N ( 44.54106) LONGITUDE: 88° 0.4' W ( -88.00719) The bench mark is a disk in the SW corner of the concrete pad of the water level station building, 15.01 meters (49.25 ft) NE of the NE corner of the plant, 0.9 m (3.0 ft) South of the center of a door to the water level station building, and 0.3 m (1.0 ft) North of the SW corner of the pad.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 7 Station ID: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: 7078 G 1983 DESIGNATION: 908 7078 G MONUMENTATION: Bench Mark disk VM#: 13232 AGENCY: National Ocean Survey IDB PID#: PN0841 SETTING CLASSIFICATION: Floor of building OPUS PID: LATITUDE: 44° 32.5' N ( 44.54094) LONGITUDE: 88° 0.4' W ( -88.00722) The bench mark is a surface disc 40.7 meters (133.5 ft) East of the SE leg of E most ash silo in the NE corner of the plant, 9.1 meters (29.9 ft) SE of the SE corner of gasoline (fuel storage shed, green aluminum building), 0.3 meters (1.0 ft) West of the South side of overhead door, 1.2 meters (3.9 ft) above ground surface. BENCH MARK STAMPING: DESIGNATION: 908 7078 COAL B MONUMENTATION: Bolt VM#: 18326 AGENCY: IDB PID#: DL2470 SETTING CLASSIFICATION: Set in watertable OPUS PID: LATITUDE: 44° 32.5' N ( 44.54106) LONGITUDE: 88° 0.5' W ( -88.00792) The bench mark is a bolt 11.0 m (36.1 ft) SW of the SW corner of a tan equipment shed, 2.75 m (9.02 ft) SE of the center of a scale leading to a loading bay, 1.4 m (4.6 ft) above the ground, 0.68 meters (2.23 ft) South of South corner of building set vertically in the water table of the plant, being a 1/4-inch bolt set in the concrete with a horizontal line across head of bolt.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 7 Station ID: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: T 227 1985 DESIGNATION: T 227 MONUMENTATION: Vertical Control disk VM#: 18327 AGENCY: National Geodetic Survey IDB PID#: PN0839 SETTING CLASSIFICATION: OPUS PID: LATITUDE: 44° 32.2' N ( 44.53592) LONGITUDE: 88° 1.0' W ( -88.01608) The bench mark is a vertical mark in the pier of the HWY bridge on the E side of Prairie Ave, set vertically in the NE face of the most NE 1 of 2 columns of the first pier SE of the avenue of the highway bridge overpass of the avenue, 15.3 meters (50.2 ft) SE of the centerline of Prairie Ave, and 8.2 meters (26.9 ft) NE of the center of the highway, 5.00 meters (16.40 ft) East of the East rail of the railroad tracks, 0.74 meters (2.43 ft) West of the NE edge of the bridge pier (column) mark is 1.60 meters (5.25 ft) above the ground. BENCH MARK STAMPING: 7079 H DESIGNATION: 908 7079 H RESET MONUMENTATION: Metal Rod VM#: 21242 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Stainless steel rod driven to refusal OPUS PID: LATITUDE: 44° 32.5' N ( 44.54181) LONGITUDE: 88° 0.6' W ( -88.00986) The bench mark is a deep rod, 44.8 m (147.0 ft) East of the most NE end of train tracks on plant property, 26.5 m (86.9 ft) NE of a red fire hydrant, and 1.3 m (4.3 ft) West of the West corner of aluminum sided storage shed being a stainless steel rod driven 7.3 m (24.0 ft) to refusal. Benchmark protected by 5" PVC sleeve with concrete kick block and witness post. 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: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) 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: 9087079 PUBLICATION DATE: 08/11/2017 Name: GREEN BAY, LAKE MICHIGAN WI NOAA Chart: 14918 Latitude: 44° 32.5' N ( 44.54111) USGS Quad: Longitude: 88° 0.4' W ( -88.00722) 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/.