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A software program was developed to estimate runoff quality/quantity, make manure nutrient management plans, and design waste storage and treatment facilities. Visual Basic programming language was used to develop the software. The Soil Conservation Services curve number method and EPIC and AGNPS models were used in the hydrological calculations. A mass balance approach was employed to estimate nutrient fate of manure and runoff throughout a year. Nutrient budget calculations were provided to the user with default values that are either obtained from field studies or from literature. Based on the results obtained from hydrology and manure management calculations, a module was provided to design manure and runoff storage and treatment structures. In the paper, models and their use in the program were explained. Integration of the models with each other was explained with flowcharts. Basic information was provided about the use of the program.