USGS Water-Year Summary 2024
363319076253301 59A 51
Northern Atlantic Coastal Plain aquifer system
Quaternary System
LOCATION - Lat 36°33'19.39", long 76°25'33.41" 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 5.70 ft. Upper casing diameter undefined; top of first opening 0 ft, bottom of last opening 5.7 ft.
DATUM - Land-surface datum is 22 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF CASING, 0.2 ft above land-surface datum, Apr. 30, 2015 to present.
PERIOD OF RECORD - April 2015 to current year.
GAGE - Electronic data logger and pressure transducer, 15-minute record interval.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, -1.00 ft above land-surface datum, Oct. 9, 2016; lowest recorded, 2.31 ft below land-surface datum, Sept. 24, 25, 2015.