|
|
|
Estimated Use of Water in the United States in 2000
Conversion Factors
| Multiply | By | To Obtain |
|---|---|---|
| Area | ||
| acre | 43,560 | square foot (ft2) |
| 4,047 | square meter (m2) | |
| 0.001562 | square mile (mi2) | |
| Flow rate | ||
| gallon per day | 3.785 | liter per day |
| million gallons per day (Mgal/d) | 1.121 | thousand acre-feet per year |
| 0.001547 | thousand cubic feet per second | |
| 0.6944 | thousand gallons per minute | |
| 0.003785 | million cubic meters per day | |
| 1.3815 | million cubic meters per year | |
| billion gallons per day (Bgal/d) | 1.3815 | billion cubic meters per year |
| thousand acre-feet per year | 0.8921 | million gallons per day |
| 0.001380 | thousand cubic feet per second | |
| 0.6195 | thousand gallons per minute | |
| 0.003377 | million cubic meters per day | |
Some water relations in inch-pounds units are shown below:
| 1 gallon (gal) | = | 8.34 pounds |
|---|---|---|
| 1 million gallons (Mgal) | = | 3.07 acre-feet |
| 1 cubic foot (ft3) | = | 62.4 pounds |
| = | 7.48 gallons | |
| 1 acre-foot (acre-ft) | = | 325,851 gallons |
| = | 43,560 cubic feet | |
| 1 inch of rain | = | 17.4 million gallons per square mile |
| = | 27,200 gallons per acre | |
| = | 100 tons per acre | |
Water Use in the United States | USGS Water Resources of the United States
For more information: wu-info@usgs.gov