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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
385252076572801 WE Cb 8
Northern Atlantic Coastal Plain aquifer system
Potomac Group
Potomac Group
LOCATION - Lat 38°52'52.3", long 76°57'28.0" referenced to North American Datum of 1983, Washington, DC, Hydrologic Unit 02070010, at Fort Dupont Park near the Activity Center.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 265 ft. Upper casing diameter 4 in; top of first opening 255 ft, bottom of last opening 265 ft. Drilled, observation, artesian well.
DATUM - Land-surface datum is 58.79 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing, 0.67 ft below land-surface datum, Jan. 22, 2004 to May. 13, 2009; Top of PVC casing, 2.31 ft above land-surface datum, May. 12, 2009 to present.
PERIOD OF RECORD - January 2004 to current year.
GAGE - Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder--30-minute recording interval, December 2004 to March 2008 and--15-minute recording interval August 2014 to current year. Missing records due to recorder malfunction.
REMARKS - Water Years 2017-2022: Records good.
Water Year 2016: Records good. Missing data due to instrument malfunction.
Water Years 2014-2015: Records good.
Water Year 2013 and prior years' accuracy statements can be found in Annual Water Data Reports.
Anacostia River Watershed Groundwater-Level Monitoring Network observation well.
Revision: Continuous groundwater levels from the Dec. 5, 2004 to March 3, 2008, were revised on May 7, 2019 due to changes in reported land surface elevation.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 36.88 ft below land surface, April 22, 2004; lowest measured, 78.95 ft below land surface, January 5, 2016 (recorder).
