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Home >> Water Data >> Groundwater Information >> Confined Aquifers >> St. Mary's County, MD
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Local Number   

Well Depth 

aquifer

Period of Record

SM Fg 45

436 ft

Piney Point Formation of Middle Eocene age

From May 1966

SM Fg 45

NWIS Historical Levels
SM Fg 45 on Groundwater Watch

WELL NAME

SM Fg 45

SITE ID

380711076222201

LOCATION

Lat 38°07´11", long 76°22´22", Hydrologic Unit 02070011,
in Ridge Volunteer Fire Department pumphouse, at Ridge.
Owner: Ridge Volunteer Fire Department.

AQUIFER

Piney Point Formation of Middle Eocene age.
Aquifer code: 124PNPN.

INSTRUMENTATION

Monthly measurements with chalked steel
tape by U.S. Geological Survey personnel.
.

CHARACTERISTICS

Drilled, observation, artesian well,
depth 436 ft; casing diameter 6 in., to 386 ft; casing
4 in. from 415 to 436 ft; screen diameter 5 in.
from 386 to 415 ft.

DATUM

Elevation of land surface is 65 ft above National Geodetic
Vertical Datum of 1929, from topographic map.
Measuring point: Hole in sanitary seal, 0.55 ft above land surface.

REMARKS

Maryland Water-Level Network observation well.

PERIOD OF RECORD

May 1966 to current year.

EXTREMES FOR RECORD

Highest water level measured,
74.83 ft below land surface, May 16, 1967;
lowest measured, 92.17 ft below land surface, Jan. 19, 2000.

COOPERATORS

Maryland Geological Survey

Download the data for the entire period of record for this well

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