ABSTRACT
This chapter discusses the modeling approach for the direct discharges into the Ohio River from the Greater Cincinnati Area. The Ohio River Sanitation Commission has undertaken a study of the sources of wet weather pollution in large rivers. The study is to be completed within two years with work in the first year concentrating on defining wet weather sources of pollution while work in the second year will concentrate on evaluating effective wet weather controls. The study area consists of three large drainage areas: Muddy Creek drainage area; Mill Creek drainage area; and Little Miami River drainage area. Model results consisted of total fecal coliform and suspended solids loadings entering the Ohio River from several sources within the study area, including tributary watercourses, wastewater treatment plants, CSOs and stormwater. The Greater Cincinnati Area is located within Hamilton County and encompasses all or a portion of 50 municipalities.
