Kahului (Maui, Hawaii) Site History
History Summary
| Station Name | Kahului, Maui, Hawaii |
|---|---|
| Latitude | 20° 54.0' N |
| Longitude | 156° 28.0' W |
| Country | USA |
| GLOSS No. | |
| Time Reference | GMT (hours 00-23) |
| Contributor | National Ocean Service (NOS) (1973+)
National Ocean. and Atmos. Administration (NOAA) US Coastal Geodetic Survey (1950-1972) |
| Instrument Type | Standard mechanical (1950-1974)
Analog-to-digital (ADR) recorder (1975-1991) Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1992-2000) |
| Site of Gauge | |
| Observational Period | 1950 - 2000 |
| Reference Level | All heights have been referred to the station tide staff zero which is linked to fixed benchmarks. |
Tide Gauge Benchmark (TGBM) Description
Benchmark 2(1929) is the primary benchmark (PBM) stamped '2 1929' set in the surface of the deck of Pier 2, adjacent to the northeast wall of the transit warehouse located at the shore end of the pier.
Auxiliary Benchmarks
11 additional benchmarks are levelled to the TGBM and the Tide Station on a yearly basis
Benchmarks
| Benchmark | Description |
|---|---|
| TGBM | 11.34ft above Tide Gauge Zero (Station Datum) |
| NOAA | Chart Datum (MLLW) is 2.23ft above Station Datum
Mean Sea Level (1960-1978) is 3.39ft above Station Datum |
Quality Assessment
Comments
A reference level correction was applied to the original data by adding +15.2 cm between 03Z 14 August - 15Z 01 September 1983. Otherwise the daily and monthly means reveal no apparent reference level changes or trends.
The residuals are very noisy during some of the winter months associated with meteorological events.
The data for 1996-2000 were supplied with heights relative to MLLW. Consequently 683mm was added to refer the data to tide gauge zero.
The data for 1998-2000 were supplied in non-GMT format and had to be shifted into GMT.
Notable episodic events:
- 28 March 1964: Tsunami from Alaska
- 04 October 1994: Tsunami from Japan
| Year | CI(%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 342-347 | (17)347-(00)348 | |||
| 1951 | 100 | None | None | None |
| 1952 | 100 | None | None | None |
| 1953 | 100 | None | (21)145-(04)146 | None |
| 1954 | 100 | None | None | None |
| 1955 | 100 | None | (06)018-(21)018 (04)049-(19)049 | None |
| 1956 | 100 | None | None | None |
| 1957 | 100 | None | None | None |
| 1958 | 100 | None | None | None |
| 1959 | 100 | None | None | None |
| 1960 | 39 | 144-366 | (22)053-(09)054 | None |
| 1961 | 99 | 1 | None | None |
| 1962 | 100 | None | (14)063-(23)063 (20)098-(04)099 | None |
| 1963 | 6 | 1-343 | None | None |
| 1964 | 100 | None | (14)217-(00)218 | None |
| 1965 | 87 | 33-82 | None | None |
| 1966 | 100 | None | (12)025-(19)025 (20)214-(11)215 | None |
| 1967 | 100 | None | None | None |
| 1968 | 100 | None | None | 137 |
| 1969 | 100 | None | (11)203-(09)204 | None |
| 1970 | 100 | None | (23)054-(07)055 (17)172-(03)173 | 216-217 |
| 1971 | 99 | 16-18 | (08)020-(16)020 | None |
| 1972 | 100 | None | None | None |
| 1973 | 99 | 1 | None | None |
| 1974 | 100 | None | None | 30-31,305 |
| 1975 | 75 | 305-365 | None | 33-34 |
| 1976 | 8 | 1-306,336-366 | None | 306,317-318 |
| 1977 | 79 | 1-78 | (21)364-(06)365 (10)365-(21)365 | Residuals very spiky throughout. |
| 1978 | 93 | 339-365 | (01)001-(21)001 (03)002-(17)002 | 7-9,11-12,21,34, 49-50 |
| 1979 | 50 | 1-152,186-192,193-197,282-298 | None | 246-247 |
| 1980 | 87 | 122-152,270-288 | (09)033-(00)034 (23)105-(19)106
(18)216-(16)217 |
None |
| 1981 | 96 | 164-177 | None | None |
| 1982 | 100 | None | None | 195-204 |
| 1983 | 99 | 142-143,193-194 | None | 147-148,184,293-306 |
| 1984 | 100 | None | None | None |
| 1985 | 99 | 60-63 | (10)309-(21)309(10)335-(16)335 | 26-32,306-308,332- 334,356-357 |
| 1986 | 99 | 19-21 | (10)023-(16)023 (06)027-(15)027 | 229-237 |
| 1987 | 100 | 365-366 | None | None |
| 1988 | 100 | None | None | None |
| 1989 | 67 | 1-4 | None | None |
| 1990 | 100 | None | None | None |
| 1991 | 100 | None | None | None |
| 1992 | 100 | None | None | None |
| 1993 | 100 | None | None | None |
| 1994 | 100 | None | None | None |
| 1995 | 100 | None | None | None |
| 1996 | 100 | None | None | None |
| 1997 | 100 | None | None | None |
| 1998 | 99 | 357-362 | (01)357 | None |
| 1999 | 100 | None | (19)001,(22)001 (06)002,(17)338 | 9-10,58,69,81,95, 338 |
| 2000 | 100 | None | None | Residuals slightly noisy throughout. |
