States with Least Waste Percentile States with Most Waste
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Total animal waste: Hog waste: Cattle waste: Poultry waste: Sheep waste: Nitrogen in waste: Nitrogen lost to atmosphere: Phosphorus in waste:
Rank states or counties by amount of animal waste produced
| Animal Type | Number of Head | Amount of Waste (tons/yr) | Volume of Waste (gallons/yr) | Amount of Nitrogen in Waste(pounds/yr) | Nitogen Lost to Atmosphere (pounds/yr) | Amount of Phosphorous in Waste (pounds/yr) |
| Hogs | 1,295,196 | 2,500,000 | 600,000,000 | 30,000,000 | 22,000,000 | 10,000,000 |
| Cattle | 5,321,161 | 32,000,000 | 7,800,000,000 | 360,000,000 | 220,000,000 | 92,000,000 |
| Poultry | 31,651,822 | 1,100,000 | 250,000,000 | 28,000,000 | 11,000,000 | 8,300,000 |
| Sheep | 64,642 | 26,000 | 6,200,000 | 550,000 | 400,000 | 110,000 |
| Total Animal | 38,332,821 | 36,000,000 | 8,600,000,000 | 420,000,000 | 250,000,000 | 110,000,000 |
| Animal Type | Percentage Change in Animal Waste |
| Hogs | Increased by 712% from 1987 to 1997 |
| Cattle | Increased by 24% from 1987 to 1997 |
| Poultry | Increased by 30% from 1987 to 1997 |
| Sheep | Decreased by 46% from 1987 to 1997 |
| Total Animal | Increased by 31% from 1987 to 1997 |
See EPA's Index of Watershed Indicators for this area (evaluates the current condition and vulnerability of aquatic resources.)
See the Factory Farm Project report for this state.
See the Oklahoma Chapter of the NRDC Report on America's Factory Farms
See the ELI Almanac of Enforceable Oklahoma State Laws to Control Nonpoint Source Water Pollution
