USGS Water-Year Summary 2020
445052073350201 Cl-145, SUNY, near Plattsburgh NY
New York sandstone aquifers
LOCATION - Lat 44°50'52.8", long 73°35'02.4" referenced to North American Datum of 1983, Clinton County, NY, Hydrologic Unit 04150408, at Altona.
WELL CHARACTERISTICS - Depth 78 ft. Upper casing diameter 6 in; top of first opening 34 ft, bottom of last opening 73 ft. Cased to 5 ft, open hole.
DATUM - Land-surface datum is 678.52 ft above North American Vertical Datum of 1988. Measuring point: Top of casing at bottom of v-notch, 1.05 ft above land-surface datum, Sep. 13, 2001 to present; Top of extended casing, between two chisel marks, 4.49 ft above land-surface datum, Jun. 13, 2017 to present.
PERIOD OF RECORD - October 1992 to current year.
GAGE - Water-stage recorder--15 minute; periodic manual measurements by USGS personnel. Prior to Mar. 30, 2002, weekly measurements by observer, and more frequent during independent research studies.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 20.13 ft below land-surface datum, Nov. 9, 1996; lowest water level, 24.90 ft below land-surface datum, Oct. 20, 2016.