Abstract
ABSTRACT Acomputer program was developed to monitor bacteria movement from livestock manure sources. It follows fecal coliform and fecal streptococci as they move from the point of generation through various collection, storage, treatment and land spreading components of an operator's waste management system. The runoff hydrology component is generated from the CREAMS (Chemical, Runoff, and Erosion from Agricultural Management Systems) model. Local soil characteristics, topography and weather conditions are input to determine the runoff frequency, magnitude and duration. The user also inputs site specific data such as animal numbers, housing system, collection frequency, temperature, method of manure application, spread area, volume and frequency. It can be used to evaluate a farmstead's contribution as well as evaluate potential management practices which may be selected. While components of the model have been validated, the model as a whole is unvalidated.
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