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We've compiled a list of 8 free and paid alternatives to Storm Water Management Model. The primary competitors include MIKE 11, MIKE 21. In addition to these, users also draw comparisons between Storm Water Management Model and MIKE Flood, SOBEK Suite, HEC-RAS. Also you can look at other similar options here: Education and Reference Software.


MIKE 11 is synonymous with top quality river modelling covering more application areas than any...

MIKE 21 is the ultimate Swiss army knife of coastal modelling.

MIKE FLOOD is the most complete toolbox for flood modelling available.

SOBEK is a powerful modelling suite for flood forecasting, optimisation of drainage systems...

HEC-RAS is designed to perform one-dimensional hydraulic calculations for a full network of natural...

Halcrow have developed ISIS Free so that it offers an integrated 1D and 2D modelling software...

GeoHECRAS speeds up HEC-RAS model creation using AutoCAD and GIS data sources.

Delft3D
Free Open Source

This webportal facilitates the Delft3D Open Source Community to come together to share knowledge...

EPA's Storm Water Management Model (SWMM) was first developed in 1971, and has since undergone...

Storm Water Management Model Platforms

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Storm Water Management Model Overview

EPA's Storm Water Management Model (SWMM) was first developed in 1971, and has since undergone several major upgrades. It continues to be widely used throughout the world for planning, analysis and design related to stormwater runoff, combined sewers, sanitary sewers, and other drainage systems in urban areas, with many applications in non-urban areas as well.

This general purpose urban hydrology and conveyance system hydraulics software is a dynamic rainfall-runoff simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas. The runoff component of SWMM operates on a collection of subcatchment areas that receive precipitation and generate runoff and pollutant loads. The routing portion of SWMM transports this runoff through a system of pipes, channels, storage/treatment devices, pumps, and regulators. SWMM tracks the quantity and quality of runoff generated within each subcatchment, and the flow rate, flow depth, and quality of water in each pipe and channel during a simulation period comprised of multiple time steps.

EPA has recently extended SWMM 5 to explicitly model the hydrologic performance of specific types of low impact development (LID) controls, such as porous pavement, bio-retention areas (e.g., rain gardens, green roofs, and street planters), rain barrels, infiltration trenches, and vegetative swales. The updated model allows engineers and planners to accurately represent any combination of LID controls within a study area to determine their effectiveness in managing stormwater and combined sewer overflows.

Running under Windows, SWMM 5 provides an integrated environment for editing study area input data, running hydrologic, hydraulic and water quality simulations, and viewing the results in a variety of formats. These include color-coded drainage area and conveyance system maps, time series graphs and tables, profile plots, and statistical frequency analyses.

SWMM 5 was produced in a joint development effort with CDM, Inc., a global consulting, engineering, construction, and operations firm.

Top Storm Water Management Model Alternatives

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