Non-Point Source Pollution Modeling in Essex Region Watersheds - PowerPoint PPT Presentation

Non-Point Source Pollution Modeling in Essex Region Watersheds Tirupati Bolisetti Dept of Civil and Environmental Engg

NPS Pollutant Modeling and BMP Evaluation Objectives • Characterize the non-point source pollutant loadings from the agricultural watersheds • Identify the areas contributing relatively excessive loadings at the outlet of the watersheds • Prioritize the sub-watersheds for implementing BMPs • Evaluate the effect of BMPs in reducing the loadings Tools Being Used • SWAT – Soil and Water Assessment Tool • AnnAGNPS – Annualised AGricultural Non-Point Source pollutant loading modeling Workshop on Agriculture- Eutrophication Linkage in L. Erie

Watersheds in Essex County Workshop on Agriculture- Eutrophication Linkage in L. Erie

Typical Results – Canard River Watershed

Some Results – Big Creek Watershed Precipitation Evapotrnspiration Water yield Evapotranspiration Surface runoff Tile drainage flow Groundwater flow 600 Depth (mm) 6, 1% 400 64, 7% 245, 200 27% 0 578, 1 2 3 4 5 6 7 8 9 10 11 12 13 Winter Spring Summer Fall 65%