MGSFlood Version 4 Features

Drag and Drop Graphical Interface, 

Computes Compliance for the 2012 Ecology LID Duration Standard,

Ability to simulate a large number of subbasins and links,

Extended 5-minute precipitation time series for most of Puget Sound and the City of Seattle suitable for conveyance design,

Variable Time Step Routine that Allows for Much Faster Simulations,

Ability to import subbasins from Excel CSV files which can be created from GIS, or CAD,

“Single Click” pond and infiltration trench sizing and Optimization routine,

Bio-Retention Facility and Green Roof Simulation Routines,

Physically-based pond and trench infiltration routines that accounts for groundwater mounding,

Simulation of stream channels with complex shapes, including floodplains,

Routines for performing Wetland Hydroperiod Analyses,

Computes Water Quality Treatment Design Parameters (Volume and Discharge rate),

Routines for Computing and Graphing Streamflow frequency, duration statistics, and hydrographs

Exports storm hydrographs to routing programs such as SWMM Extran


Click Here for an Evaluation Copy or to Purchase/Upgrade

MGSFlood Verson 4 Graphical Interface for Large Complex Watershed


MGSFlood Public Domain Version


The Public Domain Version of MGSFlood (Called WHAM) can be obtained by clicking the following link: