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.
USGS Water-Year Summary 2024
382635075030603 WO Ah 37
Northern Atlantic Coastal Plain aquifer system
Manokin Aquifer
Manokin Aquifer
LOCATION - Lat 38°26'32.7", long 75°03'04.0" referenced to North American Datum of 1983, Worcester County, MD, Hydrologic Unit 02040303, at east end of 137th St., Ocean City.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 478 ft. Upper casing diameter 4 in; top of first opening 468 ft, bottom of last opening 478 ft. Drilled, observation, artesian well.
DATUM - Land-surface datum is 13.89 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 2.79 ft above land-surface datum, UNDEFINED BEGIN DATE to Sep. 30, 1999; Top of casing, 2.75 ft above land-surface datum, Oct. 30, 1975 to Sep. 29, 1999; Top of casing, 3.1 ft above land-surface datum, Sep. 29, 1999 to present.
PERIOD OF RECORD - October 1975 to current year.
GAGE - Ocean City Groundwater Monitoring Network observation well.
REMARKS - Water Year 2021-2023: Records good.
Water Year 2020: Records good, missing data due to equipment malfunction.
Water Years 2017-2019: Records good.
Water Years 2014-2016: Records good.
Water Years 2013, and prior years' accuracy statement, can be found in Annual Water Data Reports.
Water-level measurements by U.S. Geological Survey personnel. Equipped with digital water-level recorder--60-minute recording interval from May 1997 to June 2014. Equipped with digital water-level recorder--15-minute recording interval from June 2014 to current year. Water levels are affected by local groundwater withdrawal, especially during summer peak demands. U.S. Geological Survey satellite data-collection platform at well.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 4.58 ft below land surface, February 10, 1977; lowest measured, 41.42 ft below land surface, August 30, 1989.
