Water Quality Analysis Simulation Program (WASP)
The Water Quality Analysis Simulation Program (WASP) is an enhancement of the original WASP (Di Toro et al., 1983; Connolly and Winfield, 1984; Ambrose, R.B. et al., 1988). This model 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. The state variables for the given modules are given in the table below. The time varying processes of advection, dispersion, point and diffuse mass loading and boundary exchange are represented in the model. WASP also can be linked with hydrodynamic and sediment transport models that can provide flows, depths velocities, temperature, salinity and sediment fluxes. This release of WASP contains the inclusion of the sediment diagenesis model linked to the Advanced Eutrophication sub model, which predicted sediment oxygen demand and nutrient fluxes from the underlying sediments.
- eutrophication of Tampa Bay, FL;
- phosphorus loading to Lake Okeechobee, FL;
- eutrophication of the Neuse River Estuary, NC;
- eutrophication Coosa River and Reservoirs, AL;
- PCB pollution of the Great Lakes;
- eutrophication of the Potomac Estuary;
- kepone pollution of the James River Estuary;
- volatile organic pollution of the Delaware Estuary;
- heavy metal pollution of the Deep River, North Carolina; and
- mercury in the Savannah River, GA.
The data preprocessor allows for the rapid development of input datasets. The ability to bring data into the model is as simple as cut and paste or queried from a database. The preprocessor provides detailed descriptions of all model parameters and kinetic constants. When linking WASP with hydrodynamic models it is as simple as pointing to the hydrodynamic linkage file.
- Import time series from WRDB, Spreadsheet, Text Files
- Automatically import hydrodynamic model interface information
- Multi-session capable
- Run time diagnosis
The Post-Processor (WRDB) provides an efficient method for reviewing model predictions and comparing them with field data for calibration. WRDB has the ability to display results from all of the WASP models as well as others. WRDB allows the modeler to displays the results in two graphical formats:
- Spatial Grid . a two dimensional rendition of the model network is displayed in a window where the model network is color shaded based upon the predicted concentration.
- x/y Plots -- generates an x/y line plot of predicted and/or observed model results in a window.
There is no limit on the number of x/y plots, spatial grids or even model result files the user can utilize in a session. Separate windows are created for each spatial grid or x/y plot created by the user.
WASP Model Information
|April 2, 2019
|Early versions of Windows, 64-bit Windows 7 or higher, Mac OSX, Linux Ubuntu
|Environmental Engineers/Scientists, Regulatory Agencies
|aquatic biology, assessment, compliance, discharge, environmental effects, hydrology, metals, NPS related, NPDES, point source(s), surface water, test/analysis, TMDL related
|Conventional Pollutants (Nitrogen, Phosphorus, Dissolved Oxygen, BOD, Sediment Oxygen Demand, Algae, Periphyton), Organic Chemicals, Metals, Mercury, Pathogens, Temperature
File Download Information
|File Type / Priority
|Filename / Format / Size
|Install / Required
|All of the WASP Installers are listed below. There is a 64 Bit Windows Installer, 64 Bit Mac OS X (Yosemite or Higher), 64 Bit Linux (Built on Ubuntu). You will need to have knowledge on how to install software on your target operating system.
Please contact Chris Knightes (Knightes.Chris@epa.gov) with questions or comments on WASP.
US EPA Region 4 and the National Water Quality Modeling Work Group is will post additional 5-day workshops on water quality principles / modeling using the Water Quality Analysis Simulation Program (WASP) in this section.