Daily estimates of runoff quantity and quality for a five year period were predicted with the ADAPT model. The study was
conducted on the Darby Creek watershed in central Ohio. Soils information for use with the model was developed by using MUIR and STATSGO databases in conjunction with the model input parameter generating procedure contained within the Map Unit Use File (MUUF). Other model inputs were obtained from published reports, historical climatic data, or assumed for illustration purposes. The main objective of the study was to evaluate if there is a need to use the finer resolution MUIR data versus STATSGO data to predict flow, sediment and nutrient loads. The results showed that at a watershed scale there was no
significant difference between flow and sediment results obtained by using the two databases. For nutrients there was a small (< 5%) but significant difference. The fact that the differences were small, and generally not significant, is important because there is a considerable reduction in time and resources needed to conduct studies of this nature if STATSGO data is used rather than MUIR data.