Hawaii Ocean Time-series (HOT)
in the School of Ocean and Earth Science and Technology at the University of Hawai'i at Manoa
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Locations of the HOT Water Column and Bottom Stations

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Station Coordinates Approximate
Depth (m) 		Comments
1. Hydrographic Stations
1 (Kahe) 21 20.6'N, 158 16.4'W 1,500 HOT Program coastal station
2 (ALOHA) 22 45.0'N, 158 00.0'W 4,800 HOT Program open ocean station
3 23 25.0'N, 158 00.0'W 4,800 Established and ended in 1993
4 21 57.8'N, 158 00.0'W 4,000 Established and ended in 1993
5 21 46.6'N, 158 00.0'W 450 Established and ended in 1993
6 (Kaena) 21 50.8'N, 158 21.8'W 2,500 Established in 1994
7 (Kauai Basin) 22 30.8'N, 158 10.0'W 4,800 Established in 1996
8 (HALE ALOHA) 22 27.5'N, 158 7.9'W 4,800 Established in 1997
50 (ORS) 22 45'N, 157 54.0'W 4,800 Established in 2004
51 (MOSEAN) 22 45'N, 158 6.0'W 4,800 Established in 2004
52 (WHOTS) 22 40.208'N, 157 57.001'W 4,800 Established in 2007
2. IES Network
6 (Kaena) 21 50.8'N, 158 21.8'W 2,500 May 1993 - Jun 1994, Jun 1994 - Oct 1995
N 23 00.7'N, 157 59.9'W 4,800 Feb 1991 - Feb 1992, Jun 1992 - May 1993
C (old) 22 44.9'N, 157 59.9'W 4,800 Feb 1991 - Feb 1992, Jun 1992 - May 1993, May 1993 - Jun 1994, Jun 1994 - Oct 1995, Oct 1995 - Oct 1996, Oct 1996 - lost
C (new) 22 44.49'N, 157 59.9'W 4,800 July 1997 - July 1998
SW 22 37.0'N, 158 14.7'W 4,800 Feb 1991 - Feb 1992, Jun 1992 - May 1993
SE 22 30.0'N, 157 45.2'W 4,800 Feb 1991 - Feb 1992, Jun 1992 - May 1993
E 22 44.8'N, 157 54.0'W 4,800 Feb 1991 - Feb 1992
3. Bottom-Moored Sediment Traps
ALOHA-I 22 57.3'N, 158 06.2'W 4,800 1st deployment of bottom-moored sequencing sediment trap (Jun 1992 - Sep 1993)
ALOHA-II 23 06.7'N, 157 55.8'W 4,800 2nd deployment (Sep 1993 - Oct 1994)
ALOHA-III 22 50.2'N, 157 55.9'W 4,800 3rd deployment (May 1995 - Oct 1995)
ALOHA-IV 22 51.7'N, 157 54.3'W 4,800 4th deployment (Nov 1995 - Oct 1996)
ALOHA-V 22 51.0'N, 157 53.7'W 4,800 5th deployment (Oct 1996 - Dec 1997)
ALOHA-VI 22 51.5'N, 157 55.8'W 4,800 6th deployment (Dec 1997 - Nov 1998)
ALOHA-VII 22 51.8'N, 157 55.4'W 4,800 7th deployment (Nov 1998 - Oct 1999)
ALOHA-VIII 22 49.3'N, 157 52.5'W 4,800 8th deployment (Nov 1999 - Nov 2000)
ALOHA-IX 22 48.7'N, 157 54.1'W 4,800 9th deployment (Dec 2000 - Mar 2002)
ALOHA-X 22 48.3'N, 157 55.3'W 4,800 10th deployment (Jun 2002 - Jun 2003)
ALOHA-XI 22 50.451'N, 157 52.43'W 4,800 11th deployment (Nov 2003 - Mar 2005)
ALOHA-XII 22 49.72'N, 158 5.08'W 4,800 12th deployment (Jul 2005 - Sep 2005)
ALOHA-XIII 22 51.464'N, 157 55.145'W 4,800 13th deployment (Jun 2007 - Aug 2008)
ALOHA-XIV 22 51.744'N, 157 55.12'W 4,800 14th deployment (Jun 2009 - Sep 2009)
ALOHA-XV 22 51.801'N, 157 53.319'W 4,800 15th deployment (Jun 2009 - Sep 2009)
ALOHA-XVI 22 50.853'N, 157 53.993'W 4,800 16th deployment (May 2012 - Oct 2012)
ALOHA-XVII 22 50.268'N, 157 54.804'W 4,800 17th deployment (Mar 2014 - Dec 2014)
ALOHA-XVIII 22 50.865'N, 157 54.426'W 4,800 18th deployment (Apr 2015 - Dec 2015)
ALOHA-XIX 22 50.21'N, 157 55.35'W 4,800 19th deployment (May 2016 - Mar 2017)
ALOHA-XX 22 51.971'N, 157 53.167'W 4,800 20th deployment (May 2017 - Apr 2018)
ALOHA-XXI 22 51.285'N, 157 55.491'W 4,800 21st deployment (May 2018 - Oct 2018)
ALOHA-XXII 22 50.719'N, 157 55.068'W 4,800 22nd deployment (Feb 2019 - Dec 2019)
ALOHA-XXIII 22 50.841'N, 157 54.982'W 4,800 23rd deployment (May 2021 - Oct 2021)
ALOHA-XXIV 22 51.000'N, 157 53.992'W 4,800 24rd deployment (Jul 2022 - Sep 2022)
ALOHA-XXV 22 50.301'N, 157 52.895'W 4,800 25th deployment (Jan 2023 - May 2023)
4. NOAA Weather Buoys
Buoy #51001 24 27.1'N, 162 0.5'W NOAA-NDBC meterological buoy
Buoy #51101 24 21.5'N, 162 4.9'W NOAA-NDBC meterological buoy
5. HALE-ALOHA/MOSEAN Buoy
HA-I 22 27.5'N, 158 7.9'W 4,830 Physical-biogeochemical full ocean depth mooring (Jan-May 1997)
HA-II 22 28.1'N, 158 8.6'W 4,830 Physical-biogeochemical full ocean depth mooring (May-Dec 1997)
HA-III 22 27.1'N, 158 8.0'W 4,830 Physical-biogeochemical full ocean depth mooring (Dec 1997-Apr 1998)
HA-IV 22 23.7'N, 158 4.8'W 4,830 Physical-biogeochemical full ocean depth mooring (Apr 1998-Nov 1998)
HA-V 22 24.8'N, 158 8.0'W 4,830 Physical-biogeochemical full ocean depth mooring (Nov 1998-May 1999)
HA-VI 22 27.5'N, 158 11.6'W 4,830 Physical-biogeochemical full ocean depth mooring (May 1999-Oct 1999)
HA-VII 22 22.495'N, 158 10.97'W 4,830 Physical-biogeochemical full ocean depth mooring (Nov 1999-Jan 2000)
HA-VIII 22 20.0'N, 158 10.6'W 4,830 Physical-biogeochemical full ocean depth mooring (Jun 2000-Oct 2000)
HA-IX 22 45.80'N, 158 5.68'W 4,800 Physical-biogeochemical full ocean depth mooring (Aug 2004-Nov 2004)
HA-X 22 46.00'N, 158 5.64'W 4,800 Physical-biogeochemical full ocean depth mooring (Dec 2004-May 2005)
HA-XI 22 46.009'N, 158 5.533'W 4,800 Physical-biogeochemical full ocean depth mooring (May 2005-Feb 2006)
HA-XII 22 45.982'N, 158 5.453'W 4,800 Physical-biogeochemical full ocean depth mooring (Feb 2006-Jun 2006)
HA-XIII 22 46.018'N, 158 5.499'W 4,800 Physical-biogeochemical full ocean depth mooring (Jun 2006-Dec 2006)
HA-XIV 22 45.622'N, 158 5.246'W 4,800 Physical-biogeochemical full ocean depth mooring (Jan 2007-Jul 2007)
6. WHOTS/ORS Buoy
WHOTS-I 22 45.54'N, 157 55.20'W 4,800 Physical full ocean depth mooring (Aug 2004-Jul 2005)
WHOTS-II 22 46.1'N, 157 53.4'W 4,800 Physical full ocean depth mooring (Jul 2005-Jun 2006)
WHOTS-III 22 45.99'N, 157 53.99'W 4,800 Physical full ocean depth mooring (Jun 2006-Jun 2007)
WHOTS-IV 22 40.208'N, 157 57.001'W 4,800 Physical full ocean depth mooring (Jun 2007-Jun 2008)
WHOTS-V 22 46'N, 157 53.83'W 4,800 Physical full ocean depth mooring (Jun 2008-Jul 2009)
WHOTS-VI 22 39.989'N, 157 56.961'W 4,800 Physical full ocean depth mooring (Jul 2009-Jul 2010)
WHOTS-VII 22 46.005'N, 157 53.990'W 4,800 Physical full ocean depth mooring (Jul 2010-Jul 2011)
WHOTS-VIII 22 40.157'N, 157 57.023'W 4,800 Physical full ocean depth mooring (Jul 2011-Jun 2012)
WHOTS-IX 22 46.071'N, 157 53.956'W 4,800 Physical full ocean depth mooring (Jun 2012-Jul 2013)
WHOTS-X 22 40.118'N, 157 57.010'W 4,800 Physical full ocean depth mooring (Jul 2013-Jul 2014)
WHOTS-XI 22 45.981'N, 157 53.964'W 4,800 Physical full ocean depth mooring (Jul 2014-Jul 2015)
WHOTS-XII 22 40.061'N, 157 56.9654'W 4,722 Physical full ocean depth mooring (Jul 2015-Jun 2016)
WHOTS-XIII 22 47.24'N, 157 54.45'W 4,722 Physical full ocean depth mooring (Jun 2016-Jul 2017)
WHOTS-XIV 22 40.01'N, 157 57.09'W 4,722 Physical full ocean depth mooring (Jul 2017-Sep 2018)
WHOTS-XV 22 46.04'N, 157 53.88'W 4,722 Physical full ocean depth mooring (Sep 2018-Oct 2019)
WHOTS-XVI 22 40.01'N, 157 56.96'W 4,722 Physical full ocean depth mooring (Oct 2019-Aug 2021)
WHOTS-XVII 22 46.04'N, 157 53.80'W 4,722 Physical full ocean depth mooring (Aug 2021-Jul 2022)
WHOTS-XVIII 22 40.021'N, 157 57.018'W 4,722 Physical full ocean depth mooring (Jul 2022-Jun 2023)
WHOTS-XIX 22 46.057'N, 157 53.964'W 4,722 Physical full ocean depth mooring (Jun 2023-Jun 2024)
WHOTS-XX 22 40.08'N, 157 57.01'W 4,722 Physical full ocean depth mooring (Jun 2024-Jun 2025)
7. WaveChasers/APL HOT Profiler Mooring
HPM-I 22 44.0'N, 158 1.58'W 4,800 Physical subsurface, profiler mooring (Jul-Dec 2012)