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Wyoming Water Facts
Water Use By Activity
Typical quantities of agricultural, domestic, and industrial water
use are shown below. Agricultural activities, on average, account for
90 percent or more of the water used throughout the western United States.
Only a portion of water "used" (withdrawn) is consumed. Water not consumed
is called return flow and contributes to downstream surface and ground
water supplies. Approximately half of the water applied by surface irrigation
is consumed, and only one to twenty percent of water withdrawn for industrial
processing or cooling is consumed. Individual water applications an consumptive
use rates vary widely.
Crop Production |
Typical Quantities of Water Withdrawn |
One acre of hay | 3.3 acre feet |
One acre of corn | 2.7 acre feet |
One acre of barley | 2.0 acre feet |
One acre of sugar beets | 2.7 acre feet |
Livestock |
Beef cattle | 15 gal/head/day |
Sheep | 1.5 gal/head/day |
Horse | 10 gal/head/day |
Domestic Water Use |
Average use per residence | 0.57 af/year |
| 505 gal/day |
Total use per person | 158 gal/day |
Indoor use per person | 78 gal/day |
Toilet | 27 gal/day |
Laundry | 17 gal/day |
Showers | 14 gal/day |
| Misc. | 20 gal/day |
Outdoor use per person | 80 gal/day |
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Industrial Water Use (process, transportation, cooling) |
Petroleum refining | 770 gal/barrel |
Coal gasification (250 mmcf/day) | 4,750-13,900 af/year |
Coal hydrogenation-liquefication (dry cooling 100,000 barrels fuel/day)
| 10,000-12,000 af/year |
Coal slurry pipeline (one million tons/year) | 600 af/year |
Electric generating plant (1,000 mw) | 7,000-29,000 af/year |
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