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 30,074 180,000 43,000,000 2,000,000 1,300,000 520,000
1992 29,911 180,000 43,000,000 2,000,000 1,200,000 510,000
1997 25,439 160,000 39,000,000 1,800,000 1,100,000 460,000