POLLUTION LOCATOR|Animal Waste|County Trends in IOWA


Trends in Animal Waste Levels
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Year Number of Head Amount of Waste
(tons)
Volume of Waste
(gallons)
Amount of Nitrogen in
Waste (pounds)
Nitrogen lost to
Atmosphere (pounds)
Amount of Phosphorus
in Waste (pounds)
1987 8,542 3,400 820,000 72,000 52,000 15,000
1992 8,042 3,200 770,000 68,000 49,000 14,000
1997 3,278 1,300 310,000 28,000 20,000 5,600