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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
411802073593001 Ro-18, Bear Mountain State Park NY
New York and New England crystalline-rock aquifers
Precambrian Erathem
Precambrian Erathem
LOCATION - Lat 41°18'02", long 73°59'30" referenced to North American Datum of 1927, Rockland County, NY, Hydrologic Unit 02030101, in Bear Mountain State Park near Lemon Road and Seven Lakes Drive.
REVISIONS HISTORY - 2016: Datum of gage.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 60 ft. Upper casing diameter 6 in; top of first opening 33 ft, bottom of last opening 57 ft. Cased to 53 ft, open hole.
DATUM - Land-surface datum is 381.74 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.64 ft above land-surface datum, Aug. 23, 2017 to present.
PERIOD OF RECORD - July 1949 to September 1990, November 1991 to September 1993, March 2002 to current year.
GAGE - Water-stage recorder--15 minute; periodic manual measurements by USGS personnel. Prior to Apr. 29, 2002, non-recording gage usually read weekly by observer.
REMARKS - Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 4.70 ft below land-surface datum, Mar. 11, 2011; lowest water level, 33.02 ft below land-surface datum, Feb. 6, 1981.
