U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 4
Station ID: 1614465 PUBLICATION DATE: 06/11/2018
Name: KAUMALAPAU HARBOR, LANAI ISLAND
HI
NOAA Chart: 19351 Latitude: 20° 47.4' N ( 20.79000)
USGS Quad: LANAI SOUTH OE W Longitude: 156° 59.7' W (-156.99500)
To reach the tidal bench marks from Lania City, Route 44 and Lania Airport,
proceed west at the intersection of Route 44 and Lania Airport access road from
5.3 km (3.3 mi) to the end of the highway. The bench marks are located in the
area of the harbor parking area.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING:
DESIGNATION: 161 4465 UH1
MONUMENTATION: Bench Mark disk VM#: 22589
AGENCY: Unknown IDB PID#:
SETTING CLASSIFICATION: See descriptive text OPUS PID:
LATITUDE: 20° 47.2' N ( 20.78697) LONGITUDE: 156° 59.4' W (-156.99083)
The primary bench mark is a disk.
BENCH MARK STAMPING: NO 2 1927
DESIGNATION: 161 4465 TIDAL 2
MONUMENTATION: Bench Mark disk VM#: 22588
AGENCY: U.S. Coast and Geodetic Survey
(USC&GS) IDB PID#:
SETTING CLASSIFICATION: Seawall OPUS PID:
LATITUDE: 20° 47.2' N ( 20.78697) LONGITUDE: 156° 59.4' W (-156.99083)
The bench mark is a disk set in a seawall located in the NE corner (inshore end)
of the concrete wharf, 10.70 m (35 ft) seaward of the rock bluff.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 4
Station ID: 1614465 PUBLICATION DATE: 06/11/2018
Name: KAUMALAPAU HARBOR, LANAI ISLAND
HI
NOAA Chart: 19351 Latitude: 20° 47.4' N ( 20.79000)
USGS Quad: LANAI SOUTH OE W Longitude: 156° 59.7' W (-156.99500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: 1614465 UH2
MONUMENTATION: Bench Mark disk VM#: 22590
AGENCY: Unknown IDB PID#:
SETTING CLASSIFICATION: See descriptive text OPUS PID:
LATITUDE: 20° 47.2' N ( 20.78697) LONGITUDE: 156° 59.4' W (-156.99083)
The bench mark is a disk set at the base of the large concrete stop for vehicles
located near the top of the stairs, 0.46 m (1.5 ft) from the end of the north
rail track on the dock.
BENCH MARK STAMPING:
DESIGNATION: 161 4465 UH3
MONUMENTATION: Bench Mark disk VM#: 22591
AGENCY: IDB PID#:
SETTING CLASSIFICATION: Concrete steps OPUS PID:
LATITUDE: 20° 47.2' N ( 20.78697) LONGITUDE: 156° 59.4' W (-156.99083)
The bench mark is a disk set at the bottom of the staris that lead up to the
main office, trailer, and lunch area.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 4
Station ID: 1614465 PUBLICATION DATE: 06/11/2018
Name: KAUMALAPAU HARBOR, LANAI ISLAND
HI
NOAA Chart: 19351 Latitude: 20° 47.4' N ( 20.79000)
USGS Quad: LANAI SOUTH OE W Longitude: 156° 59.7' W (-156.99500)
T I D A L D A T U M S
Tidal datums at KAUMALAPAU HARBOR, LANAI ISLAND based on:
LENGTH OF SERIES: 1 YEAR
TIME PERIOD: January 2011 - December 2011
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 1617433 KAWAIHAE, HAWAII ISLAND
Elevations of tidal datums referred to Mean Sea Level (MSL), in METERS:
MEAN SEA LEVEL MSL = 0.000
Bench Mark Elevation Information In METERS above:
Stamping or Designation MSL
161 4465 UH1 1.204
NO 2 1927 3.478
1614465 UH2 2.868
161 4465 UH3 3.688
Foot Notes:
Data from this station was collected using methodology that does not meet CO-OPS
highest level of accuracy (no more than 10 cm, 95% Confidence Interval (CI)
referenced to a tidal datum). Recognizing that lower quality data can be used
for certain applications CO-OPS is making this data available to its users with
restraint. The average six-minute water level observations derived from this
system have an accuracy ranging from 10.0 - 30.0 cm, 95% CI on datum. Users are
cautioned to consider the accuracy of these data before using them for critical
navigational or coastal engineering purposes.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 4
Station ID: 1614465 PUBLICATION DATE: 06/11/2018
Name: KAUMALAPAU HARBOR, LANAI ISLAND
HI
NOAA Chart: 19351 Latitude: 20° 47.4' N ( 20.79000)
USGS Quad: LANAI SOUTH OE W Longitude: 156° 59.7' W (-156.99500)
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/.