U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) TO REACH THE NOS GAUGING STATION, IN PORT HURON, ST CLAIR COUNTY, MI, FROM THE INTERSECTION OF M-25 (PINE GROVE) AND HANCOCK ST, PROCEED EAST ON HANCOCK FOR 0.80 MILE (1.29 KM) TO THE PROPERTY OF THE JAMES RIVER CORPORATION (FORMER DUNN PAPER COMPANY), SOUTHEAST OF AND ON THE WEST BANK OF THE ST CLAIR RIVER FROM THE JUNCTION OF RIVERVIEW AND OMAR STREETS, ON RIVER SIDE OF LARGE CORRUGATED STEEL WAREHOUSE, OPPOSITE THE NORTHERLY SET OF SLIDING DOORS, THE GAUGE HOUSE IS A 3 X 2.5 X 8 FOOT (2.4 M) SHEET METAL HOUSE. G R E A T L A K E S B E N C H M A R K S PRIMARY BENCH MARK STAMPING: OTTAWA 3060 DESIGNATION: 3060 MONUMENTATION: Survey disk VM#: 13007 AGENCY: Geodetic Survey of Canada IDB PID#: NE0081 SETTING CLASSIFICATION: Pier OPUS PID: LATITUDE: 42° 59.9' N ( 42.99911) LONGITUDE: 82° 25.5' W ( -82.42514) The bench mark is a disk set vertically 0.46 m (1.51 ft) above the ground in the S face and near SW corner of the massive concrete pier nearest the St Clair river supporting the Blue Water Bridge, 31 m (101.7 ft) ESE of the centerline of Thomas Edison Parkway, 11.2 m (36.7 ft) NE of the NE corner of a small concrete block building which is the property of the U.S. Coast Guard, and 0.33 m (1.08 ft) E of the SW corner of the pier support.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 901 4096 MALLARD MONUMENTATION: Chiseled Square VM#: 13008 AGENCY: IDB PID#: OJ0005 SETTING CLASSIFICATION: Dock OPUS PID: LATITUDE: 43° 0.2' N ( 43.00311) LONGITUDE: 82° 25.3' W ( -82.42236) The bench mark is a chiseled square set on river side of large corrugated steel warehouse, opposite the N set of sliding doors, 14.08 m (46.19 ft) S of junction of the walls of the warehouse and the intake house wing, 4.97 m (16.31 ft) S of N end of concrete dock, 2.19 m (7.19 ft) E of the center of the sliding doors, being highest point in a 1-inch square cut in the top of the concrete cap of the dock. BENCH MARK STAMPING: DESIGNATION: 901 4096 BOLT MONUMENTATION: Bolt VM#: 13009 AGENCY: IDB PID#: OJ0006 SETTING CLASSIFICATION: Anchor bolt OPUS PID: LATITUDE: 43° 0.2' N ( 43.00339) LONGITUDE: 82° 25.3' W ( -82.42247) The bench mark is a 1/2-inch steel bolt in top of the concrete foundation of a concrete block warehouse, and is N of the entrance door which faces the river and between a high concrete retaining wall and a large metal building for the river intake pump house for the plant, note, a rough cut arrow is in the concrete foundation below the bolt, 68.6 m (225.1 ft) S of SE leg of the water tank, 46.0 m (150.9 ft) of the E edge of the concrete dock on the river, 15.25 m (50.03 ft) W of the W face of the concrete retaining wall, 2.4 m (7.9 ft) N of the N side of the entrance door of the warehouse, 1.7 ft (0.5 m) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: DESIGNATION: 901 4096 TANK MONUMENTATION: Bolt VM#: 13010 AGENCY: IDB PID#: OJ0007 SETTING CLASSIFICATION: Anchor bolt OPUS PID: LATITUDE: 43° 0.2' N ( 43.00400) LONGITUDE: 82° 25.3' W ( -82.42242) The bench mark is set on top of the only 1 3/4-inch bolt in the SE leg of the water tank for the plant, 10.25 m (33.63 ft) S of the center line of the N leg on the water tower, 5.40 m (17.72 ft) N of the S corner of a building with a sliding door, 3.30 m W of the center lane of the street, being the highest point in a quadrant formed by two chiseled lines and the circumference of the bolt. The mark is framed by 3/8-inch metal plate 0.3 m (1.0 ft) high. BENCH MARK STAMPING: 4096 H 1990 DESIGNATION: 901 4096 H MONUMENTATION: Bench Mark disk VM#: 13012 AGENCY: National Ocean Survey IDB PID#: AC9139 SETTING CLASSIFICATION: Base for anchor monument OPUS PID: LATITUDE: 43° 0.0' N ( 43.00042) LONGITUDE: 82° 25.5' W ( -82.42478) The bench mark is a disk set on the E side of Wright Ave, 75.00 m (246.06 ft) N of the Blue Water Bridge on the NE corner of the John S. Martin anchor monument, 27.4 m (89.9 ft) E of the E curb of Wright Street, 14.6 m (47.9 ft) W of the W rail of railroad, 1.4 m (4.6 ft) NE of the center of the anchor monument, being disc set flush with the ground surface.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) G R E A T L A K E S B E N C H M A R K S BENCH MARK STAMPING: D 238 1980 DESIGNATION: D 238 MONUMENTATION: Bench Mark disk VM#: 13013 AGENCY: National Geodetic Survey IDB PID#: NE0959 SETTING CLASSIFICATION: OPUS PID: LATITUDE: 42° 59.9' N ( 42.99906) LONGITUDE: 82° 25.6' W ( -82.42633) the bench mark is a disk on the E side of Wright St, set in top and in the center of a 2-1/2 foot diameter cylindrical concrete mooring post, NE of the NE corner of a small 6 x 6-foot concrete block building on the property of the U.S. Coast Guard, 8.54 m (28.02 ft) SW of the SW corner of the S massive pier support of the Blue Water Bridge, 6.8 m (22.3 ft) SE of the E rail of the Port Huron and Detroit Railroad, 2.56 m (8.40 ft) NE of the NE corner of the concrete block pump house, 0.9 m (3.0 ft) above the ground 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 5 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) 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 6 of 6 Station ID: 9014096 PUBLICATION DATE: 08/11/2017 Name: DUNN PAPER, ST. CLAIR RIVER MI NOAA Chart: 14852 Latitude: 43° 0.2' N ( 43.00330) USGS Quad: Longitude: 82° 25.3' W ( -82.42170) 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/.