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.
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, 93.81 ft, Sept. 17, 18, 2016.
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.
EXTREMES FOR PERIOD OF DAILY RECORD¹.--WATER TEMPERATURE: Maximum, 26.0 °C, July 27, 28, 1999; minimum, 0.0 °C on several days during winter periods.

¹ Water-Quality Records

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