U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8414249 PUBLICATION DATE: 12/20/2011 Name: OCEANVILLE, DEER ISLAND ME NOAA Chart: 13313 Latitude: 44° 11.5' N ( 44.19231) USGS Quad: STINSON NECK Longitude: 68° 37.3' W ( -68.62093) T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 4249 A 2010 DESIGNATION: 8414249 A MONUMENTATION: Tidal Station disk VM#: 19598 AGENCY: NOS IDB PID#: SETTING CLASSIFICATION: Bedrock outcrop OPUS PID: LATITUDE: 44° 11.5' N ( 44.19231) LONGITUDE: 68° 37.3' W ( -68.62097) The primary bench mark is a disk set flush in bedrock outcrop that extends north into the water forming a point east of the Liberty Pole Point Rd docks, 44.95 m (147.5 ft) NE of bench mark 841 4249 B, 37.70 m (123.7 ft) north of the centerline of Liberty Pole Point Rd, 20.30 m (66.6 ft) ENE of the eastern edge of the stone block wall of the northeastern most pier, and 2.20 m (7.2 ft) below the highest point of bedrock outcrop. BENCH MARK STAMPING: 4249 B 2010 DESIGNATION: 8414249 B MONUMENTATION: Tidal Station disk VM#: 19599 AGENCY: NOS IDB PID#: SETTING CLASSIFICATION: Bedrock outcrop OPUS PID: LATITUDE: 44° 11.5' N ( 44.19203) LONGITUDE: 68° 37.3' W ( -68.62122) The bench mark is a disk set flush in exposed bedrock in the lawn SE of the docks and north of Liberty Pole Point Rd just past the turn off to the dock, 46.55 m (152.7 ft) NNW of bench mark 841 4249 E, 21.35 m (70.0 ft) SE of the SE corner of the storage building on the western dock, 19.65 m (64.4 ft) ENE of the unnumbered power pole that supplies the docks, 8.40 m (27.5 ft) NNW of the centerline of Liberty Pole Point Rd and flush with grade.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8414249 PUBLICATION DATE: 12/20/2011 Name: OCEANVILLE, DEER ISLAND ME NOAA Chart: 13313 Latitude: 44° 11.5' N ( 44.19231) USGS Quad: STINSON NECK Longitude: 68° 37.3' W ( -68.62093) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4249 C 2010 DESIGNATION: 8414249 C MONUMENTATION: Tidal Station disk VM#: 19600 AGENCY: NOS IDB PID#: SETTING CLASSIFICATION: Bedrock outcrop OPUS PID#: BBBV43 LATITUDE: 44° 11.5' N ( 44.19211) LONGITUDE: 68° 37.3' W ( -68.62144) The bench mark is a disk set flush in a bedrock outcrop that forms a point extending NNE into the water separating the eastern and western docks on Liberty Pole Point Rd, 38.70 m (127.0 ft) NNW of the centerline of Liberty Pole Point Rd, 31.15 m (102.2 ft) NNW of bench mark 841 4249 B, 25.60 m (84.0 ft) WSW of the eastern most stone block side wall of the docks, 18.08 m (59.3 ft) ENE of the face of the western most stone block sidewall of the docks. BENCH MARK STAMPING: 4249 D 2010 DESIGNATION: 8414249 D MONUMENTATION: Tidal Station disk VM#: 19601 AGENCY: NOS IDB PID#: SETTING CLASSIFICATION: Bedrock outcrop OPUS PID: LATITUDE: 44° 11.5' N ( 44.19178) LONGITUDE: 68° 37.3' W ( -68.62206) The bench mark is a disk set flush in the top of a small bedrock point extending NE into the water on the NW end of the beach SW of the docks that run parallel with the western pier, 55.54 m (182.2 ft) WSW of bench mark 841 4249 C, 49.96 m (163.9 ft) NW of the centerline of Liberty Pole Point Rd at the small stream culvert, 37.49 m (123.0 ft) WSW of the western most stone block sidewall of the docks.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8414249 PUBLICATION DATE: 12/20/2011 Name: OCEANVILLE, DEER ISLAND ME NOAA Chart: 13313 Latitude: 44° 11.5' N ( 44.19231) USGS Quad: STINSON NECK Longitude: 68° 37.3' W ( -68.62093) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4249 E 2010 DESIGNATION: 8414249 E MONUMENTATION: Tidal Station disk VM#: 19602 AGENCY: NOS IDB PID#: SETTING CLASSIFICATION: Bedrock outcrop OPUS PID: LATITUDE: 44° 11.5' N ( 44.19150) LONGITUDE: 68° 37.3' W ( -68.62108) The bench mark is a disk set flush in exposed bedrock near the center of the field to the south of the docks and Liberty Pole Point Rd close to a small rise and an apple tree, 46.55 m (152.7 ft) SSE of bench mark 841 4249 B, 34.70 m (113.8 ft) south of the centerline of Liberty Pole Point Rd, 30.07 m (98.7 ft) south of power pole 8, 6.15 m (20.2 ft) SSE of a lone apple tree in the middle of the field.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8414249 PUBLICATION DATE: 12/20/2011 Name: OCEANVILLE, DEER ISLAND ME NOAA Chart: 13313 Latitude: 44° 11.5' N ( 44.19231) USGS Quad: STINSON NECK Longitude: 68° 37.3' W ( -68.62093) T I D A L D A T U M S Tidal datums at OCEANVILLE, DEER ISLAND based on: LENGTH OF SERIES: 4 MONTHS TIME PERIOD: April 2010 - July 2010 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8413320 BAR HARBOR, FRENCHMAN BAY Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 3.242 MEAN HIGH WATER MHW = 3.114 MEAN SEA LEVEL MSL = 1.614 MEAN TIDE LEVEL MTL = 1.612 MEAN LOW WATER MLW = 0.109 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 4249 A 2010 4.079 0.965 4249 B 2010 5.863 2.749 4249 C 2010 4.205 1.091 4249 D 2010 4.245 1.131 4249 E 2010 7.716 4.602
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8414249 PUBLICATION DATE: 12/20/2011 Name: OCEANVILLE, DEER ISLAND ME NOAA Chart: 13313 Latitude: 44° 11.5' N ( 44.19231) USGS Quad: STINSON NECK Longitude: 68° 37.3' W ( -68.62093) D E F I N I T I O N S Mean Sea Level (MSL) is a tidal datum determined over a 19-year National Tidal Datum Epoch. It pertains to local mean sea level and should not be confused with the fixed datums of North American Vertical Datum of 1988 (NAVD88). 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 to NAVD88 are available from NGS through the World Wide Web at National Geodetic Survey. NGVD29 is a fixed datum adopted as a national standard geodetic reference for heights but is now considered superseded. NGVD29 is sometimes referred to as Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological Survey Topographic Quads. NGVD29 was originally derived from a general adjustment of the first-order leveling networks of the U.S. and Canada after holding mean sea level observed at 26 long term tide stations as fixed. Numerous local and wide-spread adjustments have been made since establishment in 1929. Bench mark elevations relative to NGVD29 are available from the National Geodetic Survey (NGS) data base via the World Wide Web at National Geodetic Survey. NAVD88 and NGVD29 are fixed geodetic datums whose elevation relationships to local MSL and other tidal datums may not be consistent from one location to another. 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/. The NAVD88 elevation is shown on the Elevations of Tidal Datums Table Referred to MLLW only when two or more of the bench marks listed have NAVD88 elevations. The NAVD88 elevation relationship shown in the table is derived from an average of several bench mark elevations relative to tide station datum. As a result of this averaging, NAVD88 bench mark elevations computed indirectly from the tidal datums elevation table may differ slightly from NAVD88 elevations listed for each bench mark in the NGS database.