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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
393603075381501 Dc42-56
Northern Atlantic Coastal Plain aquifer system
Potomac Group
Potomac Group
LOCATION - Lat 39°36'03.09", long 75°38'14.94" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 166 ft. Upper casing diameter 2 in; top of first opening 161 ft, bottom of last opening 166 ft. Drilled observation well.
DATUM - Land-surface datum is 46.35 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of flush mount, .03 ft below land-surface datum, Sep. 20, 2012 to present.
PERIOD OF RECORD - August 2010 to October 29, 2015.
GAGE - Water Years 2014-2105: Records good.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder -15 minute recording interval, August 2010 to current year.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder -15 minute recording interval, August 2010 to current year.
REMARKS - Well PW-13 - USGS Potomac Aquifer Study at Standard Chlorine, Delaware City. Missing data due to recorder malfunction.
EXTREMES FOR PERIOD OF RECORD - Highest water-level measured, 3.89 ft above sea level, April 17, 2011 (recorder); lowest measured, -1.45 ft above sea level, September 19, 2015 (recorder). Lowest water level measured during 2010 aquifer pump test was -8.14 ft above sea level, August 31, 2010 (recorder).
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 166 ft. Upper casing diameter 2 in; top of first opening 161 ft, bottom of last opening 166 ft. Drilled observation well.
DATUM - Land-surface datum is 46.35 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of flush mount, .03 ft below land-surface datum, Sep. 20, 2012 to present.
PERIOD OF RECORD - Water quality data collected August 2010.
