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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
393552075375603 Dc53-187
Northern Atlantic Coastal Plain aquifer system
Potomac Group
Potomac Group
LOCATION - Lat 39°35'51.94", long 75°37'56.53" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 240 ft. Upper casing diameter 2 in; top of first opening 235 ft, bottom of last opening 240 ft. Drilled observation well.
DATUM - Land-surface datum is 60.02 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of inner casing, 2.79 ft above land-surface datum, Jun. 6, 2010 to present.
PERIOD OF RECORD - July 2010 to current year.
GAGE - Water Year 2016: Records fair. Downgraded due to instrument drift corrections.
Water Year 2014-2015: 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 December 2016.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder - 15 minute recording interval, August 2010 to December 2016.
REMARKS - Well PW-2D - 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, -2.58 ft above sea level, May 15, 16, 2011 (recorder); lowest measured, -33.13 ft above sea level, September 15 and 16, 2015 (recorder).
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 240 ft. Upper casing diameter 2 in; top of first opening 235 ft, bottom of last opening 240 ft. Drilled observation well.
DATUM - Land-surface datum is 60.02 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of inner casing, 2.79 ft above land-surface datum, Jun. 6, 2010 to present.
PERIOD OF RECORD - Water quality data collected August 2010.
