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National Ocean Service
Datums Page Page 1 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
To reach the tidal bench marks from I-95 south in Fall River, take Exit 5
following signs to Route 6 East at the bottom of the ramp, then turn left making
a U-turn onto Route 138 South, Water Street, then go 0.3 km (0.2 mi) south to
the Fall River Lines State Pier. The bench marks are located in the vicinity of
the State Pier. The tide gauge is located on the south inshore end of the State
Pier.
T I D A L B E N C H M A R K S
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: STATE 1955
DESIGNATION: STATE
MONUMENTATION: Triangulation Station disk VM#: 16015
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: LW2264
SETTING CLASSIFICATION: Concrete pier OPUS PID#: LW2264
LATITUDE: 41° 42.3' N ( 41.70567) LONGITUDE: 71° 9.9' W ( -71.16519)
The primary bench mark is a disk located near the NW corner of the pier, 10.60 m
(34.8 ft) NW of the NW corner of the State Pier warehouse, 5.90 m (19.4 ft) SE
of the NW corner of the pier, 1.33 m (4.4 ft) east of the west side of the pier,
and 1.26 m (4.1 ft) west of the center of railroad tracks.
BENCH MARK STAMPING: 2 1955
DESIGNATION: 844 7386 TIDAL 2
MONUMENTATION: Tidal Station disk VM#: 2044
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID:
SETTING CLASSIFICATION: Concrete retaining wall OPUS PID#: BBDY87
LATITUDE: 41° 42.3' N ( 41.70440) LONGITUDE: 71° 9.8' W ( -71.16331)
The bench mark is a disk set in the concrete retaining wall located near the NE
corner of the State Pier warehouse, 29.54 m (96.9 ft) ESE of the center of 2
warehouse doors, 13.56 m (44.5 ft) SE of the NE corner of the warehouse, 3.60 m
(11.8 ft) NNW of the SE end of the wall, and 0.6 m (2 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7386 D 1977
DESIGNATION: 844 7386 D
MONUMENTATION: Tidal Station disk VM#: 2045
AGENCY: National Ocean Survey (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 41° 42.3' N ( 41.70508) LONGITUDE: 71° 9.8' W ( -71.16258)
The bench mark is a disk set in the concrete sea wall extending from the snack
bar to the pathway to the ships at the east side of the pier, 38.00 m (124 ft)
SSE from the east end of the seawall, and 9.20 m (30.2 ft) east from a bridge
support and 0.30m (1.3 ft) West from the eastern edge of the seawall.
BENCH MARK STAMPING: 7386 E 1977
DESIGNATION: 844 7386 E
MONUMENTATION: Tidal Station disk VM#: 2046
AGENCY: National Ocean Survey (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete bollard foundation OPUS PID:
LATITUDE: 41° 42.3' N ( 41.70564) LONGITUDE: 71° 9.8' W ( -71.16342)
The bench mark is a disk set in a concrete foundation supporting two bollards at
the SE end of the pier, 17.05 m (55.9 ft) NE of the NE corner of Newberry Hall,
12.74 m (41.8 ft) west of the center of the ramp leading to the destroyer USS
Joseph P. Kennedy Jr., 5.16 m (16.9 ft) NE of the pathway leading to the ships,
and 2.75 m (9.0 ft) SW of the east edge of the pier.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7386 A 1999
DESIGNATION: 844 7386 A
MONUMENTATION: Tidal Station disk VM#: 16016
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete pier OPUS PID#: BBBP31
LATITUDE: 41° 42.3' N ( 41.70438) LONGITUDE: 71° 9.8' W ( -71.16410)
The bench mark is a disk located near the SW corner of the pier, 26.00 m (85.3
ft) NW of the SW corner of the State Pier warehouse, 6.05 m (19.8 ft) SW of the
south side of the warehouse, and 0.43 m (1.4 ft) east of the west edge of the
pier.
BENCH MARK STAMPING: 7386 F 2006
DESIGNATION: 844 7386 F
MONUMENTATION: Tidal Station disk VM#: 18183
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Loading dock OPUS PID:
LATITUDE: 41° 42.3' N ( 41.70514) LONGITUDE: 71° 9.8' W ( -71.16403)
The bench mark is a disk set in the top of a concrete loading dock on the east
side of the Fall River state pier warehouse, 91.65 m (300.7 ft) NNW of the SE
corner of the building, 91.64 m (300.6 ft) SSE of the NE corner of the building,
0.21 m (0.68 ft) east of the east wall between loading docks 5 and 6 at just
below dock 6.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7386 G 2006
DESIGNATION: 844 7386 G
MONUMENTATION: Tidal Station disk VM#: 18184
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Coulvert drain OPUS PID:
LATITUDE: 41° 42.2' N ( 41.70411) LONGITUDE: 71° 9.7' W ( -71.16144)
The bench mark is a disk set in tan brick building located under the bridge and
across from the entrance to the Battleship Cove, 7.92 m (26.0 ft) NNW from the
SW corner of the building, 3.65 m (12.0 ft) SW from the NW corner of the
building, 1.10 m (3.6 ft) west of the west face of the building, 0.65 m (2.1 ft)
above the ground in a square concrete culvert drain.
BENCH MARK STAMPING: 7386 H 2017
DESIGNATION: 844 7386 H
MONUMENTATION: Tidal Station disk VM#: 22503
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Bridge column OPUS PID:
LATITUDE: 41° 42.3' N ( 41.70450) LONGITUDE: 71° 9.7' W ( -71.16197)
The bench mark is a disk set vertically in a concrete support column for the
Charles M Braga Memorial Bridge, 35.96m (118.0 ft) SW of the East entrance door
for the carousel of Fall River, 31.45m (103.2 ft) SE of the center of hte base
of the Battleship Cove Maritime Museum Sign, 9.54m (31.3 ft) North of the
centerline of the Central St, and 1.39m (4.57 ft) above grade.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
T I D A L D A T U M S
Tidal datums at FALL RIVER, HOPE BAY based on:
LENGTH OF SERIES: 19 Years
TIME PERIOD: 8/2000-07/2013, 9/2013-8/2018, 12/2018-11/2019
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8454000 PROVIDENCE, PROVIDENCE RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (10/29/2012) = 2.726
MEAN HIGHER HIGH WATER MHHW = 1.455
MEAN HIGH WATER MHW = 1.382
North American Vertical Datum NAVD88 = 0.736
MEAN TIDE LEVEL MTL = 0.717
MEAN SEA LEVEL MSL = 0.672
MEAN LOW WATER MLW = 0.051
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (02/11/2001) = -0.778
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
STATE 1955 3.640 2.258
2 1955 3.461 2.079
7386 D 1977 2.872 1.490
7386 E 1977 2.317 0.935
7386 A 1999 3.622 2.240
7386 F 2006 3.687 2.305
7386 G 2006 3.633 2.251
7386 H 2017 4.261 2.879
Foot Notes:
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8447386 PUBLICATION DATE: 05/21/2021
Name: FALL RIVER, HOPE BAY
MA
NOAA Chart: 13227 Latitude: 41° 42.3' N ( 41.70431)
USGS Quad: FALL RIVER Longitude: 71° 9.8' W ( -71.16411)
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.