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Lat 39°09'28", long 74°41'52"
referenced to North American Datum of 1983, Sea Isle City, Cape May
County, NJ, Hydrologic Unit 02040302, on bulkhead at Sea Isle City
Municipal Marina in Sea Isle City, 700 ft southeast of east side of
bridge on John F. Kennedy Boulevard (County Route 625) over Ludlam
Thorofare, and 0.9 mi south of Ludlam Bay.
PERIOD OF RECORD.--
Continuous-record tide gage, May 1975 to May
1978, February 2000 to current year. Annual maximum tide, October 1978
to September 1984. Unpublished fragmentary gage-height record, May 1997
to January 2000.
Tide elevation and water temperature recorder with
telemetry and tidal crest-stage gage. Datum of gage is at 0.00 ft NAVD
of 1988. To determine approximate elevations to NGVD of 1929, add 1.27
ft. From May 1975 to May 1978, the tide elevation and water temperature
recorder was located at 44th Street, 800 ft southwest of current
station and datum of gage at 0.00 ft NGVD of 1929. From October 1978 to
September 1984, tidal crest-stage gage located at 44th Street, 800 ft
southwest of current station and datum of gage at 0.00 ft NGVD of 1929.
Data published to NGVD of 1929 can be adjusted to NAVD of 1988 by
subtracting 1.27 ft. Online peaks have been adjusted to present
Gage cannot measure tide elevation below -3.00 ft.
Tide elevations below -3.00 have been estimated. From Jul 25, 2005 to
Jun 2, 2009, gage could not measure tide elevation below -2.8 ft; from
Aug 13, 2003 to Jul 25, 2005, gage could not measure tide elevation
below -1.50 ft; prior to Aug 13, 2003, gage could not measure tide
elevation below 2.85 ft. Periods of missing data are noted by dashed
EXTREMES FOR PERIOD OF RECORD.--
Maximum elevation, 7.56 ft, Oct
29, 2012, from crest-stage gage; minimum elevation, undetermined,
likely occurred Feb 17, 2007 as indicated by nearby reference
EXTREMES OUTSIDE PERIOD OF RECORD.--
Maximum elevation known,
6.14 ft, adjusted to present datum, Dec 11, 1992, from high-water marks
at northwest end of Third Street just south of Sea Isle City Boulevard
leading into Sea Isle City.
The water temperature data for this station
are temporary and will only be displayed for 120 days. Although the
instrumentation is calibrated at least once/year, the temporary
classification means that documented routine inspections and other
quality assurance measures are not performed that would make the data
acceptable for archival, retrieval, or future use in general scientific
or interpretive studies.