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Computer Modeling

Modeling Approach

The modeling effort consists of a three-tiered modeling approach. Tier 1 consists of several small area models used to simulate flows, pollutant loads and concentrations from specific pilot projects or localized areas of study such as wetlands, swales, wet detention ponds and individual CSO basins. Tier 2 consists of a simple pollutant loading model and a detailed sewer system model which both simulate pollutant generation by subarea for the entire watershed. The Tier 3 models are the river models which simulate instream flows and concentrations in the four main river branches based on the inputs from the Tier 2 detailed sewer system models. For more information about the modeling approach and an overview of the models used see the Modeling Fact Sheet and the paper Comprehensive Watershed Analysis Tools: the Rouge Project - A Case Study.

Following are four examples of how these models have been applied.

Ongoing Work

The models developed continue to be used for various other applications within the watershed, such as the evaluation of instream DO impacts for additional demonstration CSO control basins, and the evaluation of flow management alternatives on the Middle Rouge River.

Computer Modeling

Last Updated: 5/13/2004

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The Rouge River National Wet Weather Demonstration Project is funded, in part, by the United States Environmental Protection Agency (EPA) Grants #XP995743-01, -02, -03, -04, -05, -06, -07 and C-264000-01.