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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 2025
393617075380401 SCD-DP-11B
Northern Atlantic Coastal Plain aquifer system
Columbia Group
Columbia Group
LOCATION - Lat 39°36'17.45", long 75°38'03.64" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 14.1 ft. Upper casing diameter 2 in; top of first opening 13.1 ft, bottom of last opening 14.1 ft.
DATUM - Land-surface datum is -0.44 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of 4" PVC, 3.30 ft above land-surface datum, Jun. 30, 2011 to present.
PERIOD OF RECORD - June 2011 to current year.
GAGE - For Water Year 2017: Records good.
For 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 2011 to January 26, 2017 and July to November 2017.
Water-level measurements by U.S. Geological Survey personnel. Equipped with a digital water-level recorder - 15 minute recording interval, June 2011 to January 26, 2017 and July to November 2017.
EXTREMES FOR PERIOD OF RECORD - WATER LEVEL: Maximum, 2.81 feet above NAVD88, October 29, 2012 (recorder). Minimum, 0.42 feet above NAVD88, July 18, 2011 (recorder).
