Multiply	By	To obtain
Length
inch (in.)	2.54	centimeter (cm)
foot (ft)	0.3048	meter (m)
mile (mi)	1.609	kilometer (km)
Area
acre	4,047	square meter (m2)
square mile (mi2)	2.590	square kilometer (km2)
Volume
cubic foot (ft3)	0.02832	cubic meter (m3)
acre-foot (acre-ft)	1,233	cubic meter (m3)
Flow rate
acre-foot per year (acre-ft/yr)	1,233	cubic meter per year (m3/yr)
cubic foot per second (ft3/s)	0.02832	cubic meter per second (m3/s)
cubic foot per year (ft3/yr)	0.02832	cubic meter per year (m3/yr)
gallon per day (gal/d)	0.003785	cubic meter per day (m3/d)
inch per month (in/month)	30.48	centimeter per year (cm/yr)
Pressure
atmosphere, standard (atm)	101.3	kilopascal (kPa)

SI to Inch/Pound

Multiply	By	To obtain
Length
meter (m)	3.281	foot (ft)
Flow rate
meter per second (m/s)	3.281	foot per second (ft/s)
millimeter per day (mm/d)	0.03937	inch per day (in/d)
Density
kilogram per cubic meter (kg/m3)	0.06242	pound per cubic foot (lb/ft3)
Energy
megajoules per kilogram (MJ/kg)	0.126	kilowatt-hours per pound (kWh/lb)

Datums

Vertical coordinate information is referenced to the North American Datum of 1988 (NAVD 88).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F=(1.8×°C)+32.

Abbreviations and Acronyms

GPCD	gallon per capita per day
IDWR	Idaho Department of Water Resources
NWS	National Weather Service
SVRP	Spokane Valley-Rathdrum Prairie
USGS	U.S. Geological Survey
WWTF	wastewater treatment facility