USGS Data Series 423
National Water-Quality Assessment Program
| Multiply | By | To obtain |
|---|---|---|
| Length | ||
| centimeter (cm) | 0.3937 | inch (in.) |
| millimeter (mm) | 0.03937 | inch (in.) |
| micron (µm) | 0.0003937 | inch (in.) |
| meter (m) | 3.281 | foot (ft) |
| kilometer (km) | 0.6214 | mile (mi) |
| Area | ||
| square meter (m2) | 0.0002471 | acre |
| hectare (ha) | 2.471 | acre |
| square kilometer (km2) | 247.1 | acre |
| square centimeter (cm2) | 0.001076 | square foot (ft2) |
| square meter (m2) | 10.76 | square foot (ft2) |
| square centimeter (cm2) | 0.1550 | square inch (ft2) |
| hectare (ha) | 0.003861 | square mile (mi2) |
| square kilometer (km2) | 0.3861 | square mile (mi2) |
| Volume | ||
| liter (L) | 33.82 | ounce, fluid (fl. oz) |
| liter (L) | 2.113 | pint (pt) |
| liter (L) | 1.057 | quart (qt) |
| liter (L) | 0.2642 | gallon (gal) |
| cubic meter (m3) | 264.2 | gallon (gal) |
| cubic meter (m3) | 0.0002642 | million gallons (Mgal) |
| liter (L) | 61.02 | cubic inch (in3) |
| cubic meter (m3) | 35.31 | cubic foot (ft3) |
| cubic meter (m3) | 1.308 | cubic yard (yd3) |
| cubic meter (m3) | 0.0008107 | acre-foot (acre-ft) |
| Flow rate | ||
| meter per second (m/s) | 3.281 | foot per second (ft/s) |
| cubic meter per second (m3/s) | 70.07 | acre-foot per day (acre-ft/d) |
| cubic meter per second (m3/s) | 35.31 | cubic foot per second (ft3/s) |
| cubic meter per second (m3/s) | 22.83 | million gallons per day (Mgal/d) |
| Mass | ||
| gram (g) | 0.03527 | ounce, avoirdupois (oz) |
SI Prefixes:
milli = 10-3
micro = 10-6
nano = 10-9
pico = 10-12
micron = micrometer
Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:
°F = (1.8 × °C) + 32
Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88).
Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).
Altitude, as used in this report, refers to distance above the vertical datum.
Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (µS/cm at 25 °C).
Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms per liter (µg/L).
U.S. Department of the Interior |
U.S. Geological Survey
URL: https://pubsdata.usgs.gov/pubs/ds/423/units.html
Page Contact Information: Contact USGS
Page Last Modified: Monday, 28-Nov-2016 14:29:49 EST
