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LOCATION.--Lat 44°03'09.9", long 73°27'12.6" referenced to North American Datum of 1983, Essex County, NY, Hydrologic Unit 04150408, on west shore at boat launch near mouth of Mill Brook and 0.5 mi north of railroad station, in Port Henry.
PERIOD OF RECORD.--October 1997 to September 1999, April 2015 to current year.
GAGE.--Water-stage recorder and digital weighing precipitation gage. Datum of gage is NGVD of 1929. To convert elevations to NAVD of 1988, subtract 0.94 ft.
REMARKS.--Area of lake surface about 490 mi². Total volume below 92.5 ft elevation, reported by Lake Champlain Studies Center, 902.2 bil ft³.
EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 101.90 ft, Apr. 4, 5, 1998; minimum, 93.23 ft, Oct. 16, 2016.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum elevation, about 103.1 ft, during period May 6-9, 2011, from floodmark.
PERIOD OF RECORD (CLIM).--April 2015 to current year.
INSTRUMENTATION (CLIM).--Unshielded, 400 square centimeter collecting area, digital weighing precipitation gage, mounted on pedestal with top of collector 5 ft above ground.
EXTREMES FOR PERIOD OF RECORD (CLIM).--Maximum daily precipitation, 2.24 inches, May 29, 2016.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: October 1997 to September 1999, October 2017 to current year.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: Maximum, 26.0 °C, July 27, 28, 1999; minimum, -1.2 °C, Feb. 25, 26, 2018.
1 Water-Quality Records

NAVD 1988 Datum Conversion Information

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This station managed by the NY Water Science Center Troy.

Available Parameters Available Period
All 9 Available Parameters for this site
00010 Temperature, water 2017-10-26  2019-09-15
00035 Wind speed 2019-05-18  2019-09-15
00036 Wind direction 2019-05-18  2019-09-15
00045 Precipitation 2015-04-16  2019-09-15
00045 Precipitation [from WXT520] 2019-05-18  2019-09-15
61728 Wind gust speed 2019-05-18  2019-09-15
61729 Wind gust direction 2019-05-18  2019-09-15
62614 Elevation, lake/res, NGVD29 2015-04-11  2019-09-15
62615 Elevation, lake/res, NAVD88 2019-05-18  2019-09-15

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Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius

Most recent instantaneous value: 20.7 09-15-2019   19:45 EST
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