The Surface Water Modeling System (SMS) is a comprehensive graphical environment for one-, two-, and three-dimensional hydrodynamic modeling. A pre- and post-processor for surface water modeling and design, SMS includes 2D finite element, 2D finite difference, 3D visualization modeling tools, and limited 1D support. Supported models include the USACE-ERDC supported TABS-MD (GFGEN, RMA2, RMA4, SED2D-WES), ADCIRC, ADH, CGWAVE, CMS-Flow, CMS-Wave, STWAVE, and PTM models. Comprehensive interfaces have also been developed for facilitating the use of the FHWA commissioned analysis FESWMS package. SMS also includes a generic model interface, which can be used to support models which have not been officially incorporated into the system.

The numeric models supported in SMS compute a variety of information applicable to surface water modeling. Primary applications of the models include calculation of water surface elevations and flow velocities for shallow water flow problems, for both steady-state or dynamic conditions. Additional applications include the modeling of contaminant migration, salinity intrusion, sediment transport (scour and deposition), wave energy dispersion, wave properties (directions, magnitudes and amplitudes) and others.

The SMS interface is composed of various modules which streamline the modeling process: Scatter Data, Map conceptualization, GIS, particle tracking, annotation, and the new raster module.

New enhancements and developments continue at the Aquaveo cooperation with the U.S. Army Corps of Engineer Research and Development center (formerly Waterways Experiment Station), and the US Federal Highway Administration (FHWA).