U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
To reach the tidal bench marks, from the airport proceed north on Ocean Road for
approximately 0.6 km (0.4 mi), turn west onto 6th Street and head toward Echo
Pier. The tidal bench marks are located on the east and in the vicinity of Echo
Pier. Tide house is located on the SW inside corner of the Echo Pier.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 8 1951
DESIGNATION: 182 0000 TIDAL 8
MONUMENTATION: Tidal Station disk VM#: 122
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: DK7537
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID:
LATITUDE: 8° 44.0' N ( 8.73267) LONGITUDE: 167° 44.2' E ( 167.73661)
The primary bench mark is a disk set flush in the former concrete bulkhead
forming the north side of the main pier, 79.86 m (262.0 ft) west of the
centerline of Palm Road, 25.69 m (84.3 ft) east of bench mark 5 1948, 8.96 m
(29.4 ft) west of eastern security gate, 4.42 m (14.5 ft) north of the
centerline of Sixth Street, 0.52 m (1.7 ft) south of a chainlink fence, and
level with the road.
BENCH MARK STAMPING: 5 1948
DESIGNATION: 182 0000 TIDAL 5
MONUMENTATION: Tidal Station disk VM#: 120
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID:
SETTING CLASSIFICATION: Concrete sea wall OPUS PID:
LATITUDE: 8° 44.0' N ( 8.73267) LONGITUDE: 167° 44.2' E ( 167.73661)
The bench mark is a disk set flush in the north side of the former seawall of
the main pier, directly across from the Harbor Operations Office Tower, 25.60 m
(84.0 ft) east of the new NE corner of the pier, 10.97 m (36.0 ft) north of
center of light pole D2, 4.42 m (14.5 ft) north of the centerline of Sixth
Street, and 0.43 m (1.4 ft) south of a fence.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 6 1950
DESIGNATION: 182 0000 TIDAL 6
MONUMENTATION: Tidal Station disk VM#: 121
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID:
SETTING CLASSIFICATION: Concrete manhole foundation OPUS PID:
LATITUDE: 8° 44.0' N ( 8.73306) LONGITUDE: 167° 44.3' E ( 167.73892)
The bench mark is a disk set in the SE corner at top of a 1 m x 1 m (3 ft x 3
ft) concrete manhole structure, at the SE corner of the intersection of Lagoon
Road and Sixth Street, 12.50 m (41.0 ft) east of the centerline of Lagoon Road,
7.62 m (25.0 ft) south of the centerline of 6th Street, and 0.15 m (0.5 ft)
above ground level.
BENCH MARK STAMPING: NO 9 1951
DESIGNATION: 182 0000 TIDAL 9
MONUMENTATION: Tidal Station disk VM#: 123
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 8° 43.9' N ( 8.73144) LONGITUDE: 167° 44.4' E ( 167.73972)
The bench mark is a disk set in the SE corner at top of the concrete foundation
for the NW leg of the northerly of two large water tanks with aero beacons on
top, 84 m (275 ft) south of the centerline of Seventh Street, 64 m (210 ft) east
of the centerline of Lagoon Road, and 0.23 m (0.75 ft) SE of the SE side of NW
leg.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 11 1958
DESIGNATION: 182 0000 TIDAL 11
MONUMENTATION: Tidal Station disk VM#: 124
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 8° 44.2' N ( 8.73600) LONGITUDE: 167° 44.3' E ( 167.73803)
The bench mark is a disk set in the NE corner at top of a 3 m (9 ft) diameter
octagonal manhole structure at the NE corner of the intersection of Lagoon Road
and Fourth Street, 6.10 m (20.0 ft) east of the centerline of Lagoon Road, 7.62
m (25.0 ft) north of the centerline of Fourth Street, 1.22 m (4.0 ft) NNE of the
center of a manhole and adjacent to the light pole # B60, and flush with the
ground.
BENCH MARK STAMPING: NO 12 1959
DESIGNATION: 182 0000 TIDAL 12
MONUMENTATION: Tidal Station disk VM#: 125
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: DK3433
SETTING CLASSIFICATION: Concrete pile cap OPUS PID#: DK3433
LATITUDE: 8° 43.9' N ( 8.73203) LONGITUDE: 167° 44.1' E ( 167.73444)
The bench mark is a disk set on top of a concrete pile cap at the inner corner
of the L in main concrete pier, 3.96 m (13.0 ft) NE of the tide house, 0.76 m
(2.5 ft) NE of the corner, and 0.46 m (1.5 ft) from concrete face of pier.
Note: Pile cap is severely cracked from recent tropical storm wave action.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0000 M 1980
DESIGNATION: 182 0000 M
MONUMENTATION: Tidal Station disk VM#: 127
AGENCY: National Ocean Survey (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete pier OPUS PID:
LATITUDE: 8° 43.9' N ( 8.73236) LONGITUDE: 167° 44.1' E ( 167.73511)
The bench mark is a disk set along the north edge of Echo Pier, 147.28 m (483.2
ft) west of bench mark 5 1948, 121.37 m (398.2 ft) west of the NE corner of the
pier, 120.46 m (395.2 ft) east of the NW corner of the pier, 15.54 m (51.0 ft)
NW of light post #D7, 0.24 m (0.8 ft) south of the north edge of the pier, and
0.30 m (1.0 ft) above the pier deck level.
BENCH MARK STAMPING: 0000 N 1992
DESIGNATION: 182 0000 N
MONUMENTATION: Tidal Station disk VM#: 12703
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 8° 44.0' N ( 8.73253) LONGITUDE: 167° 44.3' E ( 167.73778)
The bench mark is a disk set in the top of a 0.55 m x 0.55 m (1.8 ft x 1.8 ft)
concrete base of light pole C39 on the south side of Sixth Street at the
intersection of Heliotrope Road, 21.70 m (71.2 ft) west of a fire hydrant, 1.95
m (6.4 ft) south of the south edge of Sixth Street, and 0.15 m (0.5 ft) above
ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 0000 R 1994
DESIGNATION: 182 0000 R
MONUMENTATION: Tidal Station disk VM#: 12705
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete slab OPUS PID:
LATITUDE: 8° 43.8' N ( 8.73064) LONGITUDE: 167° 44.4' E ( 167.74069)
The bench mark is a disk set flush on the NW corner of a 1.61 m x 1.61 m (5.3 ft
x 5.3 ft) concrete sewage access pad painted yellow, 54 m (177 ft) east of the
south water tower, 17.07 m (56.0 ft) NW of the most NW cyclone fence pole of the
Dally Tennis Court #802, 11.83 m (38.8 ft) NE of the center cyclone fence pole
fronting racquetball court #567, 6.74 m (22.1 ft) south of the centerline of 8th
street, and 0.45 m (1.5 ft) above the natural grade.
BENCH MARK STAMPING: 0000 S 2008
DESIGNATION: 182 0000 S
MONUMENTATION: Tidal Station disk VM#: 18606
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 8° 44.1' N ( 8.73428) LONGITUDE: 167° 44.3' E ( 167.73875)
The bench mark is a disk set in the top of a concrete vault for manhole cover
#75 at the SE corner of Lagoon Road and 5th Street, 13.90 m (45.6 ft) east of
centerline of Lagoon Road, 10.10 m (33.1 ft) west of centerline of 5th Street,
0.70 m (2.3 ft) SE of the center of the manhole cover, and 0.05 m (0.2 ft) above
ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
T I D A L D A T U M S
Tidal datums at KWAJALEIN, MARSHALL ISLANDS based on:
LENGTH OF SERIES: 19 YEARS
TIME PERIOD: January 1983 - December 2001
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION:
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (09/08/2010) = 1.815
MEAN HIGHER HIGH WATER MHHW = 1.194
MEAN HIGH WATER MHW = 1.088
MEAN SEA LEVEL MSL = 0.567
MEAN TIDE LEVEL MTL = 0.563
MEAN LOW WATER MLW = 0.039
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (12/02/1982) = -0.646
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 8 1951 1.963 0.875
5 1948 1.957 0.869
NO 6 1950 2.782 1.694
NO 9 1951 2.462 1.374
11 1958 2.271 1.183
NO 12 1959 1.936 0.848
0000 M 1980 2.373 1.285
0000 N 1992 2.554 1.466
0000 R 1994 3.193 2.105
0000 S 2008 2.350 1.262
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 1820000 PUBLICATION DATE: 10/07/2011
Name: KWAJALEIN, MARSHALL ISLANDS
NOAA Chart: HO6003 Latitude: 8° 43.9' N ( 8.73161)
USGS Quad: NONE Longitude: 167° 44.2' E ( 167.73622)
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 any other fixed island datum.
This tide station location has a local island datum. Island datums
are specific fixed geodetic datums whose elevation relationship 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/.