Estimate TSS Loads for Urbanized Stream Health
In an effort to provide a TSS guideline, a correlation analysis between TSS loading (lbs/acre/yr) and in-stream TSS concentrations (mg/L) were performed. Water quality modeling (BASINS) results for a continuous 5-year period were used for this analysis. The water quality model incorporated rainfall, land topography, soil type, land use, and channel geometry to generate the TSS loading (lbs/acre/yr), and in-stream TSS concentrations (mg/L). The in-stream TSS concentrations were the results of water column transport processes of washoff TSS and re-suspension of sediment from the channel bottom. The significance of this correlation was its application. Stream health appeared to be highly responsive to in-stream TSS guideline, or target condition. To protect, preserve, or restore stream integrity, in-stream TSS standards could be established or adopted by development communities and then the TSS mass loading was calculated for land use development planning.