U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
To reach the tidal bench marks from the intersection of U.S. Highway 1 and State
Highway 3 in Ellsworth, proceed SE along Highway 3 to Bar Harbor, then from the
Post Office in downtown Bar Harbor continue 0.5 km (0.3 mi) ENE on Cottage
Street to the intersection of Main Street (Route 3) and Cottage Street, then
continue 0.2 km (0.1 mi) NNW on Main Street to the municipal pier. The bench
marks are in the vicinity of the waterfront. The tide gage is located at the NW
corner of the city pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 3320 D 2006
DESIGNATION: 841 3320 D
MONUMENTATION: Survey disk VM#: 18186
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: rock out cropping OPUS PID:
LATITUDE: 44° 23.5' N ( 44.39094) LONGITUDE: 68° 12.1' W ( -68.20233)
The primary bench mark is a disk set in rock out cropping on the north side of
the Bar Harbor Inn and east of the Bar HArbor Inn pier located 32.54 m (106.8
ft) east the center line of the Bar Harbor Inn pier, 13.40 m (44.0 ft) NW of the
east end of the stone sea wall running east and west in front to the Bar Harbor
Inn, 5.61 m (18.4 ft) north of the centerline of the east end of short stone sea
wall almost level with the ground, 0.80 m (2.6 ft) below gravel walking path on
the north side of Bar Harbor Inn running east and west along sea wall set in
rock out cropping on the north side of sea wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: K 22 1934
DESIGNATION: K 22
MONUMENTATION: Survey disk VM#: 163
AGENCY: US Geological Survey (USGS) IDB PID#: PE0281
SETTING CLASSIFICATION: Granite foundation OPUS PID:
LATITUDE: 44° 23.4' N ( 44.38956) LONGITUDE: 68° 12.4' W ( -68.20714)
The bench mark is a disk set in the top of the granite foundation at the window
in the SE corner of the Bar Harbor Post Office building, 13.66 m (44.8 ft) north
of the centerline of Cottage Street, 1.98 m (6.5 ft) west of the SE corner of
the Post Office, 0.18 m (0.6 ft) south of the south face of the Post Office, and
1.13 m (3.7 ft) above ground level.
BENCH MARK STAMPING: NO 13 1975
DESIGNATION: 841 3320 TIDAL 13
MONUMENTATION: Tidal Station disk VM#: 169
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete boat ramp OPUS PID:
LATITUDE: 44° 23.5' N ( 44.39169) LONGITUDE: 68° 12.2' W ( -68.20403)
The bench mark is a disk set in the concrete boat ramp NNE of the foot of Main
Street at the SE corner of the municipal pier, 16.76 m (55.0 ft) ESE of the
centerline of the pier parking lot, 3.11 m (10.2 ft) WNW of the centerline of
the boat ramp, 2.16 m (7.1 ft) SE of a light pole at the foot of Main Street,
and 0.09 m (0.3 ft) above the parking lot.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 14 1975
DESIGNATION: 841 3320 TIDAL 14
MONUMENTATION: Tidal Station disk VM#: 170
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 44° 23.5' N ( 44.39169) LONGITUDE: 68° 12.3' W ( -68.20500)
The bench mark is a disk set in the concrete foundation of the rock wall at the
entrance to the Testes Restaurant parking lot, 40.84 m (134.0 ft) NNE of the
restaurant's main entrance, 7.92 m (26.0 ft) west of the centerline of Main
Street, and 0.76 m (2.5 ft) south of the fire hydrant encircled by the granite
wall.
BENCH MARK STAMPING: 3320 A 2003
DESIGNATION: 841 3320 A
MONUMENTATION: Tidal Station disk VM#: 17223
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete Bulkhead OPUS PID:
LATITUDE: 44° 23.5' N ( 44.39119) LONGITUDE: 68° 12.3' W ( -68.20567)
The bench mark is a disk set in the concrete bulkhead located on the north side
of West Street, 12.50 m (41.0 ft) NNW of the centerline of West Street, 9.60 m
(31.5 ft) NE of power pole 3S located on the north side of West Street, 8.11 m
(26.6 ft) ENE of the NW corner of the concrete bulkhead, and 0.24 m (0.8 ft) SSE
of the northern edge of the concrete seawall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 3320 C 2006
DESIGNATION: 841 3320 C
MONUMENTATION: Bench Mark disk VM#: 18185
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Set into the top of a concrete monumentOPUS PID:
LATITUDE: 44° 23.1' N ( 44.38522) LONGITUDE: 68° 12.2' W ( -68.20306)
The bench mark is a disk set in the top of a granite block seawall at the corner
bend of the seawall next to the Bar Harbor Inn SE of the Bar Harbor Inn's pier
located 26.20 m (86 ft) west of the Bar Harbor Inn pier, 17.18 m (56.4 ft) NE of
the center line of steps leading to parking lot to the Bar Harbor Inn and park,
0.31 m (1.0 ft) north of the steel rail along sea wall, and 0.14 m (0.5 ft)
above the walkway set in the top of a granite block seawall.
BENCH MARK STAMPING: 3320 E 2006
DESIGNATION: 841 3320 E
MONUMENTATION: Survey disk VM#: 18187
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: concrete setps OPUS PID:
LATITUDE: 44° 23.1' N ( 44.38564) LONGITUDE: 68° 12.3' W ( -68.20439)
The bench mark is a disk set on the north side of the park and south of the Bar
Harbor pier set in the second step off of West Street located 48.27 m (158.4 ft)
east of the center line of Main Street, 13.62 m (44.7 ft) south of the center
line of West Street, 0.57 m (1.9 ft) north from the top of stairs, and 0.46m
(1.5 ft) west of the east edge of stairs, 0.28 m (0.9 ft) above West Street set
in concrete steps on the south side of West Street and on the north side of the
park.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 3320 F 2006
DESIGNATION: 841 3320 F
MONUMENTATION: Bench Mark disk VM#: 18188
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: seawall OPUS PID:
LATITUDE: 44° 23.5' N ( 44.39136) LONGITUDE: 68° 12.3' W ( -68.20494)
The bench mark is a disk set in the top of a concrete seawall at the
intersection of Main Street and West Street on the west side of the Fish House
Grill located 13.75 m (45.1 ft) north of the center line of West Street, 4.42 m
(14.5 ft) west of the SW corner of the Fish House Grill, 1.14 m (3.74 ft) above
the ground set flush in a concrete sea wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
T I D A L D A T U M S
Tidal datums at BAR HARBOR, FRENCHMAN BAY based on:
LENGTH OF SERIES: 17 YEARS
TIME PERIOD: January 1978 - December 1994
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8418150 PORTLAND, CASCO BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (02/07/1978) = 4.941
MEAN HIGHER HIGH WATER MHHW = 3.466
MEAN HIGH WATER MHW = 3.336
MEAN SEA LEVEL MSL = 1.728
MEAN TIDE LEVEL MTL = 1.726
MEAN LOW WATER MLW = 0.116
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (03/21/2007) = -0.887
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
3320 D 2006 5.943 2.607
K 22 1934 18.126 14.790
NO 13 1975 6.486 3.150
NO 14 1975 15.090 11.754
3320 A 2003 8.078 4.742
3320 C 2006 7.032 3.696
3320 E 2006 8.046 4.710
3320 F 2006 8.064 4.728
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8413320 PUBLICATION DATE: 07/05/2016
Name: BAR HARBOR, FRENCHMAN BAY
ME
NOAA Chart: 13318 Latitude: 44° 23.5' N ( 44.39170)
USGS Quad: BAR HARBOR Longitude: 68° 12.3' W ( -68.20500)
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.