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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
381956076275301 CA Gd 61
Northern Atlantic Coastal Plain aquifer system
Aquia Formation
Aquia Formation
LOCATION - Lat 38°19'56.5", long 76°27'52.6" referenced to North American Datum of 1983, Calvert County, MD, Hydrologic Unit 02060006, at Calvert Marine Museum, Solomons.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 494 ft. Upper casing diameter 4 in; top of first opening 474 ft, bottom of last opening 494 ft. Drilled, observation, artesian well.
DATUM - Land-surface datum is 18.1 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of recorder shelter platform, 1.9 ft above land-surface datum, Mar. 18, 2004 to Oct. 9, 2018; Top of steel casing, 1.73 ft above land-surface datum, Oct. 10, 2018 to present. 1.73 ft MP started on 10-10-2018 (Top of Steel Casing). Previous MP was 1.90 ft. (Top of shelter platform) from 3-17-2004 to 10-09-2018.
PERIOD OF RECORD - March 2004 to current year.
GAGE - Water Year 2020-2023: Records good.
Water Years 2018-2019: Records good. Missing data due to equipment malfunction.
Water Years 2014-2017: Records good.
Water Year 2013, and prior years' accuracy statements can be found in Annual Water Data Reports.
Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder from March 2004 to current year. U.S. Geological Survey water-level telemeter at well.
Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder from March 2004 to current year. U.S. Geological Survey water-level telemeter at well.
REMARKS - Maryland Groundwater-Level Monitoring Network observation well. Water levels are affected by local and regional groundwater withdrawals.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 140.49 feet below land surface, or 122.39 ft below sea level, April 13, 2004 (recorder); lowest measured, 172.36 feet below land surface, or 154.26 ft below sea level, August 29, 2006 (recorder).
