New Landscape Contaminant Modeling System

7 December 2015

The US Army Corps of Engineers is developing a new landscape-scale contaminant modeling system to identify and simulate the fate of sediment, nutrients, and chemical contaminants over large spatial and temporal scales. The system uses:

• SWAT to simulate overland and small stream flows of water, sediment, nutrients and agricultural pesticides
• ATTIC (Advanced Tool for Tracking Industrial Chemicals) to identify commercial sources of specific chemicals of interest
• CSM (Contaminant Simulation Module) to simulate the transformation of contaminants in large streams
• NSM (Nutrient Simulation Module) to simulate algae, C, O, N, and P dynamics in large streams
• HEC-RAS (River Analysis System) to simulate flows and sediment transport in large streams.

The system is being tested in the Calleguas Creek Watershed in California. For more information contact Dr. Billy Johnson (Billy.E.Johnson@erdc.dren.mil).