QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 01 Oct 2020 Station : Eastport,ME Latitude: 44 54.2N Country : USA Longitude: 066 59.1W JASL # : 740A Time Meridian: 075W (GMT - 5 hr) GLOSS # : none Originator #:8410140 NODC #: 74064601 Contributor : National Ocean Service (NOS) National Ocean. and Atmos. Administration (NOAA) N/OES22 SSMC4, STATION 7109 1305 East West Highway Silver Spring, MD. 20910-3233 Originator : US Coastal Geodetic Survey (1929-1972);NOS (1973+) Original Data: unconfirmed; 1993+ digital Instrmnt Type: float/well system (1929-1992); Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1993-) Digitzd Intvl: unconfirmed; 1993+ six-minute NGWLMS sampling is three-minute average Present Data : Hourly, daily, and monthly values obtained by: Hourly : The original digitizing interval was hourly (standard); spot sampling on the hour (adr/NGWLMS) Daily : 119-point convolution filter (Bloomfield, 1976) centered on noon applied to the hourly data with respective periods of the 95, 50, and 5% amplitude points at 124.0, 60.2, and 40.2 hours Monthly: Simple average of all daily values; calculated if 7 or fewer days are missing Span of data : 12 Sep 1929 - 31 Dec 2019 Gaps > 1 mon : 25 Mar 1940 - 27 Apr 1940;26 Jul 1957 - 01 Oct 1958 02 Jul 1960 - 01 Aug 1960;04 Feb 1963 - 06 Aug 1963 01 Jul 1969 - 01 Aug 1969;01 Jan 1970 - 02 Feb 1970 20 Feb 1972 - 01 Apr 1972;15 Aug 1974 - 01 Apr 1975 01 Feb 1976 - 11 Nov 1976;06 Dec 1976 - 01 Mar 1977 26 Sep 1977 - 01 Nov 1977;30 Nov 1977 - 01 Jan 1978 23 Sep 1978 - 05 Nov 1978;23 Apr 1980 - 23 Jun 1980 04 Apr 1984 - 07 May 1984;20 Jan 1996 - 20 Mar 1996 21 Feb 1999 - 12 Apr 1999;01 May 2003 - 31 May 2003 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1929-2019 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks. While standard mechanical or ADR instrument was the primary gauge, leveling calibration factors were applied monthly based on tide staff comparisons. Comment : The daily and monthly means reveal no apparent reference level changes or trends and agree with the nearest stations. Timing accuracy was no better than about +/- 7 minutes prior to 1979. Only extreme deviations are noted below. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1929 30 none none none 1930 100 none none none 1931 100 none none none 1932 100 none none none 1933 100 none none none 1934 100 none none 56-63,226-228,321 1935 100 none none none 1936 100 none none none 1937 100 none none 354 1938 100 none none 215-216 1939 100 none none none 1940 88 85-118,129-140, (23)141-(19)142 144-145,246-247 145-147 1941 100 none none 48,255-256,348, 355-356 1942 100 none none none 1943 100 none none none 1944 100 none none 46 1945 100 none none 2,17-19,321-324, 331-336 1946 100 none none 33-34 1947 100 none none none 1948 100 none none none 1949 100 none none 325-327 1950 100 none none none 1951 100 none none 32-34 1952 100 none none 58,76-77,277-278 1953 98 48-54 (02)047-(18)047 19-21,291-292 1954 100 none none 254-255,345 1955 100 none none none 1956 100 none none 364 1957 57 207-365 none none 1958 25 1-274 none 333-336 1959 100 none none 3-4,332-333 1960 90 159-167,184-214 (02)179-(14)179 3,216,277,319,326, 348,352 1961 83 20-46,146-166, (00)129-(09)129 64,81,136,182,339, 252-267 (05)135-(12)135 345-347 1962 100 none none 7-8,16-17,27,42,80, 231-233,314-315,319- 320,341-342 1963 49 32-33,35-218 (22)228-(12)229 27,261 1964 100 none none none 1965 100 none none 181-185 1966 100 none none 179 1967 100 none none 9-15,36-42,47-48, 65-68,121-123,138- 151,202-205,218-234, 242-245,249-253 1968 100 none none 29-32,49,55-61,114, 157-174,333,358 1969 79 1-32,105-119,182-213 none 58-105,121-156,344 1970 89 1-33,34-44 none 119,153 1971 100 none none 87-90,304-365 1972 87 51-92,249-251,271- none 1-245 272,274-276 1973 98 215-223 none 20-23,94-95,153-155, 210-211 1974 60 165-175,227-365 none 6-15,27-39,81,113 1975 73 1-91,244-251 none 181-190 1976 15 32-316,341-366 none 340 1977 65 1-60,130-132,269- none 75-83,91-104,151- 305,334-365 153,179-187,203-208, 225-235 1978 74 1,34-37,55-73,227- none 238-240,262 238,241-261,266-309 1979 100 none none 147,335-352 1980 81 114-175,231-239 (19)239-(14)240 69,74-76,83-84,87, 112,325-331 1981 96 265-280 none 181-184 1982 100 none none 317-324 1983 100 none none 86-105,357 1984 91 95-128 none 5-10,70-80,180-190 1985 100 none none none 1986 98 180-186 none none 1987 100 none none 94-98 1988 100 none none none 1989 100 none none 64-67 1990 100 none none 274 1991 95 53-56,85-88,118-133, none none 150-153,258-260 1992 100 none (11)045-(18)045 none (00)173-(13)173 (01)178-(15)178 1993 99 55-59 (11)284-(19)284 none (09)305-(17)305 1994 95 101-122 (01)170-(14)170 none (03)217-(18)217 (22)220-(11)221 (00)226-(19)226 (07)306-(14)306 (09)326-(16)326 (16)332-(12)333 (10)345-(19)345 1995 99 55-56 (06)038-(13)038 none (03)081-(22)081 1996 83 20-80 none none 1997 100 none none none 1998 100 none none none 1999 86 52-102 (02)025-(09)025 none (02)050-(09)050 2000 100 none (06)215-(15)215 none 2001 99 312-314 none none 2002 100 none none none 2003 99 219-221 (19)242-(02)243 none 2004 100 none none none 2005 93 44-69 none none 2006 100 none none none 2007 100 none none none 2008 98 156-164 none none 2009 97 1-13 (18)014-(15)015 none 2010 100 none none none 2011 100 none none none 2012 100 none none none 2013 100 none none none 2014 100 none none none 2015 100 none none none 2016 100 none none none 2017 100 none none none 2018 100 none none none 2019 100 none none none