⚡ Key Features & Capabilities

🌧️ Hydrologic (Rainfall-Runoff) Modeling

Rainfall-Runoff Methods:

• Green-Ampt, Horton, and SCS Curve Number infiltration methods

• Kinematic wave and nonlinear reservoir routing

• Snowmelt modeling (temperature index method)

• Continuous and single-event simulation

Climate Data Integration:

• Design storms (historical, synthetic, probabilistic)

• Continuous rainfall time series (5-minute to hourly)

• Evapotranspiration (monthly average, time-series, Hargreaves)

• Climate change multipliers for intensity and temperature

🏗️ Hydraulic (Flow Routing) Modeling

Conveyance Elements:

• Open channels (natural & lined), closed conduits (circular, box, elliptical, arch)

• Pipes (pressure, no pressure, partially full)

• Pumps (on/off, variable speed, operational curves)

• Orifices, weirs, outlets, regulators, and control structures

Flow Routing Methods:

• Steady, kinematic wave, and dynamic wave routing

• Full dynamic (St. Venant equations) for pressurized and backwater conditions

• Surge analysis and pump station performance

• Inlet capacity and bypass calculations

🌊 2D Overland Flow & Flood Mapping

2D Simulation:

• Direct integration with EPA SWMM5 (no separate license)

• 2D overland flow on unstructured mesh (triangles/quads)

• Interconnected 1D (conduit) + 2D (overland) simulation

• Surface flooding extents, depth, velocity, hazard (depth × velocity)

Flood Hazard Mapping:

• Floodplain delineation from 1D/2D results

• Flow path, velocity, and depth mapping

• Critical infrastructure flood risk assessment

• HEC-RAS interoperability

🏙️ Sanitary Sewer Modeling

Wastewater Hydrology:

• Dry weather flow (DWF) diurnal patterns (user-defined, built-in library)

• Infiltration and inflow (I&I) – rainfall-dependent, groundwater

• Sanitary sewer loading from population and land use

• Commercial and industrial discharge patterns

Water Quality Simulation:

• Pollutant buildup and wash-off (land use-based)

• Constituent routing (BOD, TSS, TN, TP, bacteria, user-defined)

• CSO and SSO event characterization

• Treatment plant inflow prediction (hydrograph, pollutograph)

⚡ Real-Time Control (RTC)

RTC Rules:

• If-Then-Else logic for gates, pumps, weirs, outlets

• Sensor-driven control (flow, stage, water quality)

• Time-based and scenario-based rule activation

Active RTC Optimization:

• Multi-objective optimization (flood reduction, CSO minimization, energy savings)

• Real-time forecast integration (radar, NWP)

• Model Predictive Control (MPC)

🗺️ GIS-Centric Workflow

ArcGIS / QGIS Integration:

• Direct editing of catchment, conduit, and node attributes

• Topology checking and repair

• Subcatchment delineation from DEM (automatic)

Map Display:

• Thematic mapping by parameter (depth, velocity, flooding)

• High-performance pan/zoom for millions of network elements

• Pop-up query and edit in place

⚙️ Model Automation & Calibration

Model Builder & Scenario Manager:

• Drag-and-drop creation calibration scenarios (parameter sets: roughness, infiltration, I&I)

• Monte Carlo, Latin Hypercube, and Sobol sampling for uncertainty/Sensitivity

• Automatic calibration using PEST (non-linear least squares, GLUE)

Time-Series Management:

• Direct editing, visualization, and statistical analysis

• Resampling and gap-filling tools

• Import/export from SCADA, telemetry, and monitoring stations

📊 Optimization & Decision Support

Multi-Objective Optimization:

• Genetic algorithm (NSGA-II) for trade-offs (flood depth vs. cost vs. water quality)

• Optimal placement of green infrastructure

• Low Impact Development (LID) sizing and placement

Performance Metrics:

• Flood volume and duration, percent flooded nodes, surcharged links

• CSO volume and frequency, water quality exceedances

• Energy cost and pump efficiency

🆕 What’s New in Version 2025 v7.7

• Climate Change Scenario Wizard – Automated downscaling and delta method for future climate (2040s, 2080s)

• PEST++ Integration – Parameter estimation and uncertainty analysis (auto-calibration)

• RTC-2D – Real-time control of gates/weirs in 2D overland flow domain

• Enhanced LID Modeling – Blue roofs, permeable pavement, bioretention with underdrain control

• Asset Management Dashboard – Condition-based inspection and rehabilitation prioritization (PACP, MACP, LACP)

• Live Data Ingestion – Real-time telemetry (SCADA, radar rainfall) for nowcasting and warning

• Native Cloud Engine – Run 1000+ Monte Carlo scenarios on AWS/Azure in hours

• GPU Acceleration – Up to 10× speedup for 2D flood simulations (NVIDIA CUDA)

🎯 Industry Applications

• Municipal Stormwater Master Planning – Capacity analysis, flood mitigation, green infrastructure, climate resilience

• Sanitary Sewer Collection System – I&I reduction, CSO/SSO control, capacity assurance, rehabilitation prioritization

• Floodplain & Flood Hazard Management – Inundation mapping, flood risk analysis, warning systems

• Regulatory Compliance – NPDES, MS4, Combined Sewer Overflow (CSO) long-term control plan (LTCP)

• Real-Time Decision Support – Flood warning, pump station optimization, smart city integration