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WASP Model Release Notes

This model is being distributed, maintained and actively supported by EPA.

WASP Model Menu
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WASP 8.32 released on 4-2-2019

  • Fixed issue with POC Decay Derivative Calculation
  • Re-worked how external data links are refreshed
  • Added Segment Meta Data File for BMD Output Files

WASP 8.31 released on 1-29-2019

  • Updated analytical solution for solids settling

WASP 8.30 released on 11-6-2018

  • Updated timestep optimization routine to include settling
  • Add option for setting timestep optimization sensitivity for adjustment

WASP 8.2 released on 6-7-2018

  • Updated precision in sediment transport algorithm
  • Enhanced the Toxicant Model BMD Output

WASP 8.1  released on 7-12-2017

  • Corrected Issue associated with Phosphorus Flux to SOD Module
  • Corrected Flow Routing Transport Option
  • Cleanup Interface Database
  • Updated Output Routines
  • Added New Output File Containing Major Fluxes
  • Enhanced the Import Routine for WASP7 Files to include periphyton
  • Organic Chemical/Nano Chemical and Solids/Nano Solids model is complete

WASP 8.0  released on 8-31-2016

  • Initial Release

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Contact Us About Community of Practice to ask a question, provide feedback, or report a problem.
Last updated on March 6, 2025
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