Barnyard runoff contains animal manure, spilled feed, soil, and other materials.
This runoff requires facilities for both pollution control and drainage. Because it is seldom practical to treat runoff so that it can be discharged into streams, land application is the only method considered in this document. The first step in planning runoff control is to inventory all sources of water entering or flowing through the barnyard, such as roofs, seepage areas, and land above the barnyard. Runoff can be controlled by using diversions, waterways, subsurface drains, and roof gutters. Clean water should be prevented from entering the barnyard and should be outletted into a natural drainageway.