USGS Water-Year Summary 2020
431308078544501 Ni-70, near Ransomville NY
Sand and gravel aquifers (glaciated regions)
LOCATION - Lat 43°13'08", long 78°54'45" referenced to North American Datum of 1927, Niagara County, NY, Hydrologic Unit 04130001, 1.4 mi south of the intersection of Route 93 and Ransomville Road, near Ransomville.
- WDR NY-97-3: 1983 to 1991 water level. The elevation of land-surface datum was revised from 336.66 ft above NGVD of 1929 to 335.95 ft above NGVD of 1929 on February 26, 2021.
WELL CHARACTERISTICS - Depth 24 ft. Upper casing diameter 48 in; top of first opening 0 ft, bottom of last opening 24 ft. Cased to 24 ft (stone lined). Elevation of land-surface datum is 335.95 ft above NGVD of 1929 and 335.40 ft above NAVD of 1988.
DATUM - Land-surface datum is 336.66 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of shelter shelf, 3.43 ft above land-surface datum, Aug. 10, 2016 to present.
PERIOD OF RECORD - August 1972 to September 1997 and October 2004 to current year. Records for August 1972 to September 1976 are unpublished and available in files of the U.S. Geological Survey.
GAGE - Water-stage recorder--15-minute; periodic measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 0.10 ft below land-surface datum. Mar. 26, 2007; lowest water level, 13.88 ft below land-surface datum, Dec. 21, 1991.