USGS Water-Year Summary 2021
393851077343001 WA Bk 25
Piedmont and Blue Ridge carbonate-rock aquifers
LOCATION - Lat 39°38'50.87", long 77°34'29.33" referenced to North American Datum of 1983, Washington County, MD, Hydrologic Unit 02070004, 0.5 mi south of Smithsburg.
- Depth 200 ft. Upper casing diameter 6 in; top of first opening 128 ft, bottom of last opening 200 ft.
Drilled, observation, water-table well; open hole below 128 ft.
Well sounded February 25, 2020 at 172.40 ft from MP with sediment on bottom noted.
Well has on occasion responded to & nbsp; earthquakes from various locations around the globe as well as in the States.
- Land-surface datum is 792.81 ft above North American Vertical Datum of 1988. Measuring point: Top of recorder shelter platform, 3.50 ft above land-surface datum, May 2, 1990 to present.
Land-surface datum is 793.09 ft above North American Vertical Datum of
1988. Measuring point: Top of recorder shelter platform, 3.50 ft above
land-surface datum, May 2, 1990 to July 02, 2019.
Levels run into site July 02, 2019 show elevation of land surface is 792.81 ft above North American Vertical Datum of 1988 starting July 02, 2019 to present. No change to MP of 3.50 ft above land-surface datum.
PERIOD OF RECORD - April 1970 to current year.
GAGE - Water Year 2020: Record good.
Water Year 2019: Record good.
Water Year 2018: Record good.
Water Year 2017: Record good.
Water Year 2016: Record good.
Water-level measurements by U.S. Geological Survey personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 9.43 ft below land surface, April 6, 1993(recorder); lowest measured, 54.35 ft below land surface, October 16, 2009.