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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.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
393551075381103 Dc52-179
Potomac Group
LOCATION - Lat 39°35'51.14", long 75°38'09.20" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 284.2 ft. Upper casing diameter 2 in; top of first opening 279.2 ft, bottom of last opening 284.2 ft.
DATUM - Land-surface datum is 51.78 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of 2" Sch80 PVC, 2.57 ft above land-surface datum, Apr. 12, 2014 to present.
PERIOD OF RECORD - June 2014 to current year.
GAGE - Water Years 2014-2016: Records good, with periods of missing data in Water Year 2016.
Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder. 15-minute recorder interval from June 2014 to December 2016.
Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder. 15-minute recorder interval from June 2014 to December 2016.
REMARKS - Well PW-21; USGS - Potomac Aquifer Study at Standard Chlorine, Delaware City. Missing data due to instrument removal during water quality sampling.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, -21.88 feet above NGVD29, July 28, 2014; lowest measured, -71.27 ft above NGVD29, September 9-10, 2014 (recorder).
