ABSTRACT

Bill J. Barfield, J.C. Hayes, S.L. Harp, K.F. Holbrook, and J. Gillespie

IDEAL is a spreadsheet model developed to be used in assessing the impact of storm water best management practices (BMPs) on discharge of water, sediment, nutrients, and bacteria into streams draining urban areas. The model predicts effluent loads and concentrations of the above pollutants in water coming from the watershed as impacted by vegetative filter strips, dry detention ponds, and wet detention ponds. Using stochastic procedures, the model predicts single storm values and converts them to average annual storm values. In addition, the model can predict return period single storm loadings.