Water Quality Analysis Simulation Program (WASP6/5)
Feb. 10, 2004/Oct. 1993
Yes/Yes (PDF)

Water Quality Analysis Simulation Program (WASP) is a generalized framework for modeling contaminant fate and transport in surface waters.

  Based on the flexible compartment modeling approach, it can be applied in one, two or three dimensions and is designed to permit easy substitution of user- written routines into program structure. Problems studied using WASP framework include biochemical oxygen demand and dissolved oxygen dynamics nutrients and eutrophication, bacterial contamination, and organic chemical and heavy metal contamination.

Two WASP models are provided: Toxics, TOXI, combines kinetic structure with WASP transport structure and simple sediment balance algorithms to predict dissolved and sorbed chemical concentrations in the bed and overlying waters; dissolved oxygen /eutrophication, EUTRO, combines kinetic structure with WASP transport structure to predict DO and phytoplankton dynamics affected by nutrients and organic material.

  Detailed WASP model description is available. WASP's input requirements and output description too large to be described here. Please download and install model documentation for detailed data requirements.

File Size Download
WASP6.2 (Feb. 10, 2004) model system for
Windows (98/ME/NT/2000/XP)
(simulate Max. of 3000 segments and 4000 time pairs)
WASP6 DLL Updater

(Eutro.dll / Heat.dll / Mercury.dll / Toxi.dll)

These DLLs correct problems when linking with the DYNHYD hydrodynamic model. You do not need these files if you are not linking with DYNHYD.
WASP6 Model Documentation (in PDF format) 3.21MB

Following is a legacy WASP5 for DOS. This is for an archival purpose. If possible, use WASP6 (see above) for Windows instead.

File Size Download
WASP5 model system for
MS-DOS (installation program)
WASP5 installation image, zipped
(in case that you're having a difficulty with EPA's installation program)
WASP5 Model Documentation (in PDF format) 1.02MB
WASP5 Data Input Documentation (in PDF format) 0.15MB
Dynamic Estuary Model, DYNHYD5 Documentation (in PDF format) 0.32MB
RIVMOD Update patch to WASP model system (Oct. 1995) 0.83MB
EURO5 and TOXI5 Update patch to WASP model system (Jan. 1996) 0.54MB

If you're having a system lock-up while running WASP installation program (=INSTALWP.EXE), then try following;

  1. Reboot your PC.
  2. Hold down "F5" key during the booting process to bypass current AUTOEXEC.BAT and CONFIG.SYS settings temporarily.
  3. Run WASP installation program (=INSTALWP.EXE).
  4. Of course, reboot again when the WASP installation completes.