USGS Water-Year Summary for Site 381804075063402

Click to hide Water-Year Summary instructions and information

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.

	Available Parameters
	00095 Specific cond at 25C(Min.)
	62611 Elevation, GW, NAVD8(Min.)
	72019 Water level, depth L(Max.,Mean,Min.)

Select a water year

Water year 2024: 2024-10-01 to 2025-09-30

Print this page

USGS Water-Year Summary 2024

381804075063402 WO Cg 103

Northern Atlantic Coastal Plain aquifer system
Sinepuxent Formation

LOCATION - Lat 38°18'04.81", long 75°06'34.24" referenced to North American Datum of 1983, Worcester County, MD, Hydrologic Unit 02040303,

GROUNDWATER RECORDS

WELL CHARACTERISTICS - Depth 12.4 ft. Upper casing diameter 2 in; top of first opening 7.4 ft, bottom of last opening 12.4 ft.

DATUM - Land-surface datum is 4.91 ft above North American Vertical Datum of 1988. Measuring point: Undefined.

PERIOD OF RECORD - August 2010, October 2014 to September 2015 and September 2019 to April 2020.

GAGE -

For 2015 Water Year, records fair.

For 2019 Water Year, records good.

For 2020 Water Year, records good.

Water-level measurements by U.S. Geological Survey personnel. Equipped with non vented pressure sensor with 6 minute recording interval, October 2014 to September 2015.

REMARKS - Well KM03 A Shallow - Assateague sea level rise study.

EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 5.74 ft above sea level (0.83 ft above land surface), October 21, 2019 (recorder); lowest measured, 2.04 ft above sea level (2.87 ft below land surface), September 10, 2015 (recorder).

WATER-QUALITY RECORDS

WELL CHARACTERISTICS - Depth 12.4 ft. Upper casing diameter 2 in; top of first opening 7.4 ft, bottom of last opening 12.4 ft.

DATUM - Land-surface datum is 4.91 ft above North American Vertical Datum of 1988. Measuring point: Undefined.

PERIOD OF DAILY RECORD - October 2014 to October 2015.

INSTRUMENTATION - Multi-parameter water-quality sonde.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 22,700 microsiemens/cm, October 5, 2014; minimum, 256 microsiemens/cm, September 10 and 11, 2015. WATER TEMPERATURE: Maximum, 19.8°C, multiple days in 2015; minimum, 8.1°C, March 3 and 4, 2015.