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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
393553075382401 Dc52-176
Columbia Group
LOCATION - Lat 39°35'52.68", long 75°38'23.92" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 18.6 ft. Upper casing diameter 2 in; top of first opening 13.6 ft, bottom of last opening 18.6 ft.
DATUM - Land-surface datum is 28.45 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of 2" Sch80 PVC, 2.43 ft above land-surface datum, May 9, 2014 to present.
PERIOD OF RECORD - May 2014 to current year.
GAGE - Water Years 2014-2016: Records good.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder - 15 minute recording interval, June 2014 to December 2016.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder - 15 minute recording interval, June 2014 to December 2016.
REMARKS - Well CW-19; 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, 22.97 ft above sea level, June 27, 2015 (recorder); lowest measured, 20.66 ft above sea level, multiple dates from October 30 through November 16, 2014 (recorder).
