U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 9440875 PUBLICATION DATE: 05/01/2003
Name: SOUTH BEND
WA
NOAA Chart: 18504 Latitude: 46° 39.8' N ( 46.66330)
USGS Quad: SOUTH BEND Longitude: 123° 47.9' W (-123.79800)
To reach the bench marks from the intersection of Kendrick Street and Robert
Bush Drive (U.S. Highway 101) in South Bend, proceed SW on Robert Bush Drive for
0.40 km (0.25 mi) to the Peterson and Sons Seafoods, Inc. processing plant on
the north side of Robert Bush Drive. The bench marks are along Robert Bush Drive
and Kendrick Street. The tide station was on the wharf on the north side of the
processing plant.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 0875 A 1982
DESIGNATION: 944 0875 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 8966
AGENCY: National Ocean Survey (NOS) IDB PID#: SC0954
SETTING CLASSIFICATION: Concrete ledge OPUS PID:
LATITUDE: 46° 39.8' N ( 46.66330) LONGITUDE: 123° 47.9' W (-123.79800)
The primary bench mark is a disk set in the NE corner of a raised ledge along
the north face of the concrete foundation of the single story wood building for
Bud's Lumber Company, 13 m (44 ft) south of the centerline of Robert Bush Drive
(U.S. Highway 101), 0.73 m (2.4 ft) south of the north edge of the ledge, 0.18 m
(0.6 ft) north of the north face of Buds Lumber Company building, 0.18 m (0.6
ft) west of the east edge of the ledge and 0.30 m (1.0 ft) above ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 9440875 PUBLICATION DATE: 05/01/2003
Name: SOUTH BEND
WA
NOAA Chart: 18504 Latitude: 46° 39.8' N ( 46.66330)
USGS Quad: SOUTH BEND Longitude: 123° 47.9' W (-123.79800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0875 B 1982
DESIGNATION: 944 0875 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 8967
AGENCY: National Ocean Survey (NOS) IDB PID#: SC0956
SETTING CLASSIFICATION: Concrete footing for steps OPUS PID:
LATITUDE: 46° 39.8' N ( 46.66330) LONGITUDE: 123° 48.0' W (-123.80000)
The bench mark is a disk set in the NE corner of the concrete footing for the
steps leading to the Gavel Lodge, 22 m (73 ft) south of the centerline of Robert
Bush Drive (U.S. Highway 101), 4.6 m (15.1 ft) north of the north face of the
building, 1.71 m (5.6 ft) north of the south face of a 1.07 m x 1.83 m x 1.22 m
(3.5 ft x 6.0 ft x 4.0 ft) brick planter, 0.98 m (3.2 ft) east of the east edge
of the steps, and 0.15 m (0.5 ft) above ground level.
BENCH MARK STAMPING: 0875 C 1982
DESIGNATION: 944 0875 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 8968
AGENCY: National Ocean Survey (NOS) IDB PID#: SC0957
SETTING CLASSIFICATION: Doorsill OPUS PID:
LATITUDE: 46° 39.8' N ( 46.66330) LONGITUDE: 123° 48.0' W (-123.80000)
The bench mark is a disk set in an abandoned concrete door sill NW of the Gavel
Lodge and near an old abandoned brick wall, 23.62 m (77.5 ft) NW of the NW
corner of the concrete footing for the brick planter west of the entrance stairs
leading to the Gavel Lodge, 21.79 m (71.5 ft) north of the NW corner of Gavel
Lodge, 12.65 m (41.5 ft) south of the centerline of Robert Bush Drive (U.S.
Highway 101), 1 m (4 ft) west of a 0.46 m (1.5 ft) square brick column, 0.3 m (1
ft) east of the old 4 m (14 ft) brick wall, and 0.9 m (3 ft) above highway
level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 9440875 PUBLICATION DATE: 05/01/2003
Name: SOUTH BEND
WA
NOAA Chart: 18504 Latitude: 46° 39.8' N ( 46.66330)
USGS Quad: SOUTH BEND Longitude: 123° 47.9' W (-123.79800)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0875 D 1982
DESIGNATION: 944 0875 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 8969
AGENCY: National Ocean Survey (NOS) IDB PID#: SC0955
SETTING CLASSIFICATION: Retaining wall OPUS PID:
LATITUDE: 46° 39.8' N ( 46.66330) LONGITUDE: 123° 48.0' W (-123.80000)
The bench mark is a disk set in the NE corner of the retaining wall for a
concrete planter at the single story wood frame building for the Country Bowl,
23.32 m (76.5 ft) south of the centerline of Robert Bush Drive (U.S. Highway
101), 0.67 m (2.2 ft) west of the west facing corner of the building entrance,
0.49 m (1.6 ft) north of the north face of the building, and 0.61 m (2.0 ft)
above the level of the parking area.
BENCH MARK STAMPING: 0875 E 1982
DESIGNATION: 944 0875 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 8970
AGENCY: National Ocean Survey (NOS) IDB PID#: SC0953
SETTING CLASSIFICATION: Building wall OPUS PID:
LATITUDE: 46° 39.8' N ( 46.66330) LONGITUDE: 123° 47.9' W (-123.79800)
The bench mark is a disk set vertically in the north face of the St. Lawrence
Church, 27 m (88 ft) north of the centerline of First Street, 20 m (64 ft) west
of the centerline of Kendrick Street, 3 m (9 ft) west of the NE corner of the
church, and 0.3 m (1 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 9440875 PUBLICATION DATE: 05/01/2003
Name: SOUTH BEND
WA
NOAA Chart: 18504 Latitude: 46° 39.8' N ( 46.66330)
USGS Quad: SOUTH BEND Longitude: 123° 47.9' W (-123.79800)
T I D A L D A T U M S
Tidal datums at SOUTH BEND based on:
LENGTH OF SERIES: 1 MONTH
TIME PERIOD: June 1982 - June 1982
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9440910 TOKE POINT, WILLAPA BAY
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 2.992
MEAN HIGH WATER MHW = 2.774
MEAN SEA LEVEL MSL = 1.652
MEAN TIDE LEVEL MTL = 1.607
MEAN LOW WATER MLW = 0.440
North American Vertical Datum NAVD88 = 0.427
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
0875 A 1982 4.779 2.005
0875 B 1982 7.573 4.799
0875 C 1982 7.848 5.074
0875 D 1982 4.849 2.075
0875 E 1982 4.467 1.693
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 9440875 PUBLICATION DATE: 05/01/2003
Name: SOUTH BEND
WA
NOAA Chart: 18504 Latitude: 46° 39.8' N ( 46.66330)
USGS Quad: SOUTH BEND Longitude: 123° 47.9' W (-123.79800)
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.