| Click on the links on the left to open and download the specific WASP user's manual. Files are in PDF format. |
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| Click to Download | Description |
| WASP Transport | Provides overview and governing equations for advective flow options in WASP including: Flow Routing, Kinematic Wave, Dynamic Wave, Hydrodynamic Linkage |
| Sediment Transport | Provides overview and governing equations for descriptive and predictive (mechanistic) sediment transport |
| Eutrophication | Provides overview and governing equations for multiple algal groups and nutrient cycle |
| Periphyton/Macro Algae | Provides overview and governing equations for macro algae and periphyton |
| Sediment Diagenesis | Provides overview and governing equations for sediment diagenesis module |
| Water Temperature | Provides overview and governing equations water temperature module |
| pH/Alkalinity | Provides overview and governing equations pH and Alkalinity Module |
| Light | Provides overview and governing equations light module |
Tim Wool, Robert B. Ambrose, Jr. ,James L. Martin and Alex Comer
The Water Quality Analysis Simulation Program (WASP) helps users interpret and predict water quality responses to natural phenomena and manmade pollution for various pollution management decisions. WASP is a dynamic compartment-modeling program for aquatic systems, including both the water column and the underlying benthos. WASP allows the user to investigate 1, 2 and 3 dimensional systems and a variety of pollutant types—including both conventional pollutants (e.g., dissolved oxygen, nutrients, phytoplankton, etc.) and toxic materials. WASP has capabilities of linking with hydrodynamic and watershed models which allows for multi-year analyses under varying meteorological and environmental conditions. WASP was originally developed by HydroScience, Inc. in 1970 and was later adapted by the US Environmental Protection Agency’s Large Lakes Research Station (LLRS) for applications to the Great Lakes. The LLRS first publicly released the model in 1981. WASP has undergone continuous development since that time and this year will mark its 50th anniversary. This paper follows the development of WASP from its origin to the latest release of the model in 2020, documenting its evolution and present structure and capabilities.
This publication is free to download, click on the link below
EPA’s Water Modeling Workgroup is pleased to announce the release of an update to the 1985 Second Edition of Rates, Constants, and Kinetics Formulations (RCK) in Surface Water Quality Modeling in the area of nutrient-related modeling. The newly completed report, “Literature Review on Nutrient-Related Rates, Constants, and Kinetics Formulations in Surface Water Quality Modeling”, includes information on model updates and improvements since the 1985 RCK manual, model parameter values compiled from the literature, and study-specific metadata for model applications included in the review. This literature review is focused on the application of four widely used models: WASP, CE-QUAL-W2, HSPF, and QUAL2K. Click on the button below to download.