U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
In Penobscot, ME from the intersection of I-95 and I-395 east, take I-395 east
to exit 3B for 202 East/Downtown Bangor/Main Street, go 0.3 km (0.2 mi) on 202
East/Main Street, take a right on Dutton Street for 0.2 km (0.1 mi) to a double
gate for Pike Industries. The tide station is located on the NE side of Pike
Industries.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 4612 C 2004
DESIGNATION: 841 4612 C
MONUMENTATION: Tidal Station disk VM#: 17665
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete footing OPUS PID:
LATITUDE: 44° 47.3' N ( 44.78830) LONGITUDE: 68° 46.7' W ( -68.77830)
The primary bench mark is a disk set in a concrete 1 m (4 ft) diameter footing
for a highway sign at 202 East on the east side of Main Street and at the
intersection of Main Street and Dutton Street in Downtown Bangor, 29.10 m (95.5
ft) west of the NW corner of the Holiday Inn, 26.59 m (87.2 ft) SW form the
centerline of Dutton Street, 1.86 m (6.1 ft) south of the north curb of Main
Street, and 0.16 m (0.5 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 4612 B 2004
DESIGNATION: 841 4612 B
MONUMENTATION: Tidal Station disk VM#: 17675
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete footing OPUS PID:
LATITUDE: 44° 47.2' N ( 44.78670) LONGITUDE: 68° 46.6' W ( -68.77670)
The bench mark is a disk set flush in a 1 m (3 ft) diameter concrete footing for
a train overpass at the end of Dutton Street and Pike Industries, 26.10 m (85.6
ft) WNW of the center of the double gates leading into Pike Industries, 7.95 m
(26.1 ft) SSW from the most WNW support of the three support braces to the
railroad overpass, 5.33 m (17.5 ft) south from the north retaining wall of the
railroad overpass, and 0.25 m (0.8 ft) above the ground.
BENCH MARK STAMPING: 4612 A 2004
DESIGNATION: 841 4612 A
MONUMENTATION: Tidal Station disk VM#: 17676
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 44° 47.2' N ( 44.78670) LONGITUDE: 68° 46.5' W ( -68.77500)
The bench mark is a disk set flush in a 3 m (11 ft) X 3 m (10 ft) concrete
foundation located at the south end of Pike Industries on the north end of the
truck scale, 20.92 m (68.6 ft) west of the east sea wall at Pike Industries,
20.37 m (66.8 ft) north of a flag pole by the south end of the truck scales at
Pike Industries, and 0.16 m (0.5 ft) east from the NW edge of the concrete
foundation on the north end of the truck scale.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: TAR 74
DESIGNATION: TAR 74
MONUMENTATION: Survey disk VM#: 17677
AGENCY: US Corp of Engineers (USCE) IDB PID#:
SETTING CLASSIFICATION: Ramp OPUS PID:
LATITUDE: 44° 47.3' N ( 44.78830) LONGITUDE: 68° 46.5' W ( -68.77500)
The bench mark is a disk set in an asphalt ramp located on the NE side of Pike
Industries, 20.70 m (67.9 ft) east of a chainlink fence running north and south
on the west side of Pike Industries, 6.00 m (19.7 ft) WSW of the cneterline of
Main Road through Pike Industries, 1.73 m (5.7 ft) NNW of the NE corner of a
steel sided maintenance building on the north end of Pike Industries, and 1.01 m
(3.3 ft) above the road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: E 159 1966
DESIGNATION: E 159
MONUMENTATION: Bench Mark disk VM#: 17678
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: PE0475
SETTING CLASSIFICATION: Retaining wall OPUS PID:
LATITUDE: 44° 47.2' N ( 44.78670) LONGITUDE: 68° 46.6' W ( -68.77670)
The bench mark is a disk set on the NW end on the top of the SW stone retaining
wall for the railroad overpass located at the end of Dutton Street and Pike
Industries, 18.50 m (60.7 ft) NW of the northern most railroad tracks crossing
over Dutton Street, 10.90 m (35.8 ft) SW of the NW bound retaining wall face for
the railroad overpass, 0.80 m (2.6 ft) SE of the NW end of the stone retaining
wall railroad overpass, and 4.40 m (14.4 ft) above Dutton Street.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
T I D A L D A T U M S
Tidal datums at BANGOR based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: September 2004 - November 2004
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 = 4.347
MEAN HIGH WATER MHW = 4.185
MEAN SEA LEVEL MSL = 2.147
MEAN TIDE LEVEL MTL = 2.143
MEAN LOW WATER MLW = 0.100
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
4612 C 2004 17.335 13.150
4612 B 2004 7.496 3.311
4612 A 2004 5.949 1.764
TAR 74 6.315 2.130
E 159 1966 12.430 8.245
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8414612 PUBLICATION DATE: 03/22/2005
Name: BANGOR
ME
NOAA Chart: 13309 Latitude: 44° 47.7' N ( 44.79500)
USGS Quad: BANGOR Longitude: 68° 46.3' W ( -68.77170)
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.