Hydrogeologic Framework and Simulation of Ground-Water Flow and Travel Time in the Shallow Aquifer System in the Area of Naval Support Activity Memphis, Millington, Tennessee

CONVERSION FACTORS, VERTICAL DATUM, AND WELL-NUMBERING SYSTEM

Multiply

By

To obtain

inch (in.)

25.4

millimeter

inch per year (in/yr)

25.4

millimeter per year

foot (ft)

0.3048

meter

foot per day (ft/d)

0.3048

meter per day

foot per year (ft/yr)

0.3048

meter per year

mile (mi)

1.609

kilometer

acre

0.4047

square hectometer

square foot (ft²)

0.0929

square meter

square mile (mi²)

2.59

square kilometer

cubic foot per second (ft³/s)

0.02832

cubic meter per second

cubic foot per day (ft³/d)

0.02832

cubic meter per day

gallon per minute (gal/min)

0.06308

liter per second

Multiply	By	To obtain
inch (in.)	25.4	millimeter
inch per year (in/yr)	25.4	millimeter per year
foot (ft)	0.3048	meter
foot per day (ft/d)	0.3048	meter per day
foot per year (ft/yr)	0.3048	meter per year
mile (mi)	1.609	kilometer
acre	0.4047	square hectometer
square foot (ft²)	0.0929	square meter
square mile (mi²)	2.59	square kilometer
cubic foot per second (ft³/s)	0.02832	cubic meter per second
cubic foot per day (ft³/d)	0.02832	cubic meter per day
gallon per minute (gal/min)	0.06308	liter per second

Temperature in degrees Fahrenheit (^oF) can be converted to degrees Celsius as follows: ^oC = 5/9 x (^oF - 32)

Transmissivity: In this report transmissivity is expressed as foot squared per day (ft²/d)--The standard unit for transmissivity (T) is cubic foot per day per square foot times foot of aquifer thickness "[(ft³/d)/ft²]ft" or cubic meters per day per square meter times meter of aquifer thickness "[(m³/d)/m²]m." These mathematical expressions reduce to foot squared per day "ft²/d" or meter squared per day "m²/d."

Sea level: In this report "sea level" refers to the National Geodetic Vertical Datum of 1929--a geodetic datum derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.

Tennessee District well-numbering system: Wells in Tennessee are identified according to the numbering system that is used by the U.S. Geological Survey, Water Resources Division. The well number consists of three parts:

(1) an abbreviation of the name of the county in which the well is located;

(2) a letter designating the 7 1/2-minute topographic quadrangle on which the well is plotted; quadrangles are lettered from left to right across the county beginning in the southwest corner of the county; and

(3) a number generally indicating the numerical order in which the well was inventoried.

For example, Sh:U-99 indicates that the well is located in Shelby County on the "U" quadrangle and is identified as well 99 in the numerical sequence.

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