USGS Water-Year Summary 2024
364028076270101 59A 45
Northern Atlantic Coastal Plain aquifer system
Quaternary System
LOCATION - Lat 36°40'27.89", long 76°27'01.44" referenced to North American Datum of 1983, Chesapeake City, VA, Hydrologic Unit 03010205, in Great Dismal Swamp National Wildlife Refuge.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 5 ft. Upper casing diameter undefined; top of first opening 0 ft, bottom of last opening 5 ft.
DATUM - Land-surface datum is 22 ft above National Geodetic Vertical Datum of 1929. Measuring point: COUPLING ON TOP OF CASING, 0.10 ft above land-surface datum, Apr. 16, 2015 to present.
PERIOD OF RECORD - September 2014 to current year.
GAGE - Electronic data logger and pressure transducer, 15-minute record interval.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 1.55 ft above land-surface datum, Oct. 9, 2016; lowest recorded, 1.36 ft below land-surface datum, Sept. 1, 2016.