U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 9446807 PUBLICATION DATE: 02/10/2016
Name: BUDD INLET, SOUTH OF GULL HARBOR
WA
NOAA Chart: 18456 Latitude: 47° 5.9' N ( 47.09830)
USGS Quad: OLYMPIA Longitude: 122° 53.7' W (-122.89500)
To reach the tidal bench marks from the State Capitol building on Capitol Way in
Olympia, head north on Capitol Way to Fifth Avenue, head east on Fifth Avenue to
Plum Street. Then head north on Plum Street, which becomes East Bay Drive at
Olympia Avenue, which later becomes Boston Harbor Road at Mission Drive, for 8
km (5 mi) to 47th Avenue NE. Then head west on 47th Avenue NE for 0.5 km (0.3
mi) to a barbed-wire chain link fence at the Terminus of 47th Avenue NE to the
gate which is the entrance way to the State of Washington, Department of Natural
Resources (DNR) property, continue west on the property down a ravine to the DNR
wharf. The bench marks were located in the vicinity and tide gauge site was on
the northern end of the pier T at the westernmost end of the wharf.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 6807 B 1996
DESIGNATION: 944 6807 B
MONUMENTATION: DJ VM#: 13320
AGENCY: National Ocean Service (NOS) IDB PID#: DM3916
SETTING CLASSIFICATION: Footings/foundation walls of
small/medium structures OPUS PID:
LATITUDE: 47° 5.9' N ( 47.09830) LONGITUDE: 122° 53.7' W (-122.89500)
The primary bench mark is a disk set flush in the NW corner at the top of a 0.91
m (3 ft) high concrete foundation for a power pole with a utility box and
electrical meters on the State of Washington, Department of Natural Resources
property, 21 m (68 ft) SW of a monumental anchor, 2.44 m (8.0 ft) west of a
Federal Pacific Electric Company power pole (no number), and 1.37 m (4.5 ft)
north of a chain link fence.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 9446807 PUBLICATION DATE: 02/10/2016
Name: BUDD INLET, SOUTH OF GULL HARBOR
WA
NOAA Chart: 18456 Latitude: 47° 5.9' N ( 47.09830)
USGS Quad: OLYMPIA Longitude: 122° 53.7' W (-122.89500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6807 A 1996
DESIGNATION: 944 6807 A
MONUMENTATION: DJ VM#: 13321
AGENCY: National Ocean Service (NOS) IDB PID#: DM3917
SETTING CLASSIFICATION: Footings/foundation walls of
small/medium structures OPUS PID:
LATITUDE: 47° 5.9' N ( 47.09830) LONGITUDE: 122° 53.7' W (-122.89500)
The bench mark is a disk set into a concrete foundation at the eastern end of an
abandoned warehouse on the property of the State of Washington, Department of
Natural Resources, 16 m (52 ft) NW of a power pole (pole has no number) which
services a housed water pump, 13 m (43 ft) due south from the east fence gate
post on the north property line, approximately 3 m (10 ft) from the north gate
post, 0.46 m (1.5 ft) SW of the eastern end of the foundation of the warehouse,
and level with the ground surface.
BENCH MARK STAMPING: 6807 C 1996
DESIGNATION: 944 6807 C
MONUMENTATION: DJ VM#: 13322
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Retaining walls OPUS PID:
LATITUDE: 47° 5.9' N ( 47.09830) LONGITUDE: 122° 53.7' W (-122.89500)
The bench mark is a disk set in the top of a concrete retaining wall, at the
northernmost end of wall on the property of Mark Litchman, to the north of the
State of Washington, Department of Natural Resources' property, 32 m (105 ft) SW
of the easternmost gate post of the southern gate, 21 m (69 ft) south of the NW
property iron corner of Mark Litchman property, and 0.3 m (1 ft) east of the
western edge of the retaining wall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 9446807 PUBLICATION DATE: 02/10/2016
Name: BUDD INLET, SOUTH OF GULL HARBOR
WA
NOAA Chart: 18456 Latitude: 47° 5.9' N ( 47.09830)
USGS Quad: OLYMPIA Longitude: 122° 53.7' W (-122.89500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6807 D 1996
DESIGNATION: 944 6807 D
MONUMENTATION: DJ VM#: 13323
AGENCY: National Ocean Service (NOS) IDB PID#: DM3915
SETTING CLASSIFICATION: Footings/foundation walls of
small/medium structures OPUS PID:
LATITUDE: 47° 5.9' N ( 47.09830) LONGITUDE: 122° 53.7' W (-122.89500)
The bench mark is a disk set flush in the top of an abandoned foundation on the
property of the State of Washington, Department of Natural Resources, 80 m (263
ft) SW of the northern gate post of the main gate leading into the DNR property,
49 m (161 ft) SE of a water tank, and 9 m (31 ft) south of the northern end of
this abandoned foundation.
BENCH MARK STAMPING: 6807 E 1996
DESIGNATION: 944 6807 E
MONUMENTATION: DJ VM#: 13324
AGENCY: National Ocean Service (NOS) IDB PID#: DM3914
SETTING CLASSIFICATION: Footings/foundation walls of
small/medium structures OPUS PID:
LATITUDE: 47° 5.9' N ( 47.09830) LONGITUDE: 122° 53.7' W (-122.89500)
The bench mark is a disk set flush in the in the SE corner at the top of a 0.61
m (2.0 ft) high concrete foundation of a Department of Commerce Naval Monument
on the property of the State of Washington, Department of Natural Resources, 22
m (71 ft) SW of a water tank, 6 m (20 ft) south of a chain link fence (north
property line), and 4 m (14 ft) NE of a power pole (pole has no number).
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 9446807 PUBLICATION DATE: 02/10/2016
Name: BUDD INLET, SOUTH OF GULL HARBOR
WA
NOAA Chart: 18456 Latitude: 47° 5.9' N ( 47.09830)
USGS Quad: OLYMPIA Longitude: 122° 53.7' W (-122.89500)
T I D A L D A T U M S
Tidal datums at BUDD INLET, SOUTH OF GULL HARBOR based on:
LENGTH OF SERIES: 5 MONTHS
TIME PERIOD: May 1996 - September 1996
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9447130 SEATTLE, PUGET SOUND
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 4.420
MEAN HIGH WATER MHW = 4.131
MEAN SEA LEVEL MSL = 2.540
MEAN TIDE LEVEL MTL = 2.535
North American Vertical Datum NAVD88 = 1.250
MEAN LOW WATER MLW = 0.939
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
6807 B 1996 7.614 3.483
6807 A 1996 6.321 2.190
6807 C 1996 5.573 1.442
6807 D 1996 25.162 21.031
6807 E 1996 25.179 21.048
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 9446807 PUBLICATION DATE: 02/10/2016
Name: BUDD INLET, SOUTH OF GULL HARBOR
WA
NOAA Chart: 18456 Latitude: 47° 5.9' N ( 47.09830)
USGS Quad: OLYMPIA Longitude: 122° 53.7' W (-122.89500)
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.