Iowa has two types of DNR-regulated animal feeding operations (AFOs): confinements and open feedlots. Both AFO types are confined (kept and fed for 45 days or more per year) in a lot, yard, corral, building or other area. Both types include manure storage structures, but do not include livestock markets.
confinement feeding operation:
A confinement feeding operation (above) confines animals to areas that are totally roofed. Confinement feeding operations in Iowa must retain all manure.
An open feedlot is unroofed or partially roofed with no vegetation or residue ground cover while the animals are confined. Large open feedlots with a national pollutant discharge elimination system (NPDES) permit are allowed to discharge to a water of the state under certain conditions listed in the permit, such as during a storm event larger than the 25-year, 24-hour storm.
A combined operation has some animals in a confinement and some in an open feedlot.
Data and Resources
- AFO Siting Atlasapplication
Mapping Application used to site Animal Feeding Operations.
- Animal Feeding Operations Open Data Site and Live Downloadesri rest
Support data for the Animal Feeding Operation site selection. Provides...
- Confinements Open Data Site with Live Data Downloadwebsite
Open data site with ability to download live data.
- Open Feedlots Open Data Site with Live Data Downloadwebsite
Open Data Site with ability to download live data.
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