Environmental Protection

Agency Releases Enhanced Aquatox Model

The U.S. Environmental Protection Agency, Office of Science and Technology, has released an enhanced version of the aquatic ecosystem simulation model AQUATOX.

The PC-based ecosystem model predicts the fate of nutrients and organic chemicals in waterbodies, as well as their direct and indirect effects on the resident organisms.

AQUATOX Release 3 contains enhancements that increase the realism and utility of the model. The most important enhancements include:

  • Capability to represent estuaries at a screening level;
  • Capability to model multiple linked river and reservoir segments;
  • Enhanced nutrients analysis, including nutrient release from sediments, daily dissolved oxygen fluctuations, and toxicity from low oxygen and ammonia;
  • Capability to simulate biological effects of suspended and bedded sediments; and
  • Expanded data management, graphics and statistical analysis.

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