Advanced TR-20 and TR-55 Stormwater Software

Design Detention Ponds in Minutes!

StormNET automates your detention pond designs.

• Automated detention pond design will save you hours of manual calculation time
• Size and design a detention pond in just minutes
• Easily compare pre- and post-developed hydrology conditions
• Perform interconnected pond routing
• Submit agency-ready reports
• FEMA approved

Highway Drainage Design

StormNET automates your highway drainage design work. StormNET can simulate dual drainage systems (stormwater sewer network and city streets as dual conveyance pathways) and inlet capacity. It will quickly determine the amount of stormwater flow that is intercepted by the stormwater network inlets and the amount of stormwater flow that bypasses and is then routed further downstream to other inlets.

AutoCAD Integration

Leverage your AutoCAD® Land Desktop (LDD) and Civil 3D platform, by seamlessly sharing stormwater sewer design data with StormNET. Update a pipe size, invert elevation, sump elevation, or rim elevation, and have the updated change automatically reflect in the AutoCAD drawing. This sophisticated level of integration allows you to greatly increase your level of productivity.

AutoCAD drawing in StormNET

Included H&H Toolbox

Included with StormNET is an integrated Hydraulic & Hydrology (H&H) Toolbox, allowing you quick access to standard hydraulic and hydrology calculations. The H&H Toolbox makes it easier than ever to quickly perform engineering computations that drainage engineers commonly run into. Capabilities include:

• Design and analyze detention pond discharge structures, including compound weirs, multi-port risers, orifices, etc.
• Design outlet discharge aprons
• Design and size culverts, pipes, ditches, open channels
• Design and size stormwater inlets
• Design riprap protection
• And much more…

Advanced Capabilities

StormNET’s advanced features and capabilities include:

• Easy to use graphical interface
• Integration with AutoCAD and GIS
• Automatically construct network sewer models from AutoCAD and MicroStation drawings, GIS geodatabases
• Linkage through LandXML and GIS shapefiles

• Automatic Detention Pond Sizer and Pond Designer
• Size and design a pond and corresponding outlet structure in minutes
• Account for basin infiltration
• Model subsurface vaults or systems of large diameter interconnected storage pipes, arched pipes, or manufactured storage chambers

• Rainfall Designer
• Automatically determine design rainfall (based upon study location) for 1, 2, 5, 10, 25, 50, and 100 year return frequencies using StormNET’s site-specific storm distribution database with over 3,500 up-to-date rainfall recording stations across North America
• Define any storm duration, multiple storm events
• Numerous storm distributions, including SCS, Huff, Eastern Washington, Florida, Chicago Storm, Hurricane Hazel, etc.

• Account for complex flow conditions, including:
• Subcritical, critical, and supercritical flow regimes
• Gravity and pressurized flow
• Flow reversals
• Flow splits and combines
• Branched, dendritic, and looped systems
• Tailwater submergence effects
• Interconnected ponds
• Tidal outfalls
• More…

• Account for head losses, including:
• Entrance losses
• Exit losses
• Friction losses
• Bend losses
• Drop losses

Water Quality Modeling

StormNET provides you with all the tools necessary to perform your urban stormwater water quality modeling.

• Account for rain gardens, green roofs, rain barrels, bioswales, dry detention ponds, wet ponds, retention ponds, wetlands, and more
• Model particulate settling, water cleanup, water quality best management practices (BMP), and TMDL (Total Maximum Daily Loads)
• StormNET is approved by the US Environmental Protection Agency (EPA) and US Federal Emergency Management Authority (FEMA)