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Sign up today and experience the future of hydraulic modeling.

Ready to Revolutionize Your Workflow?

Track all your simulations from a single dashboard. Monitor progress, view results, and manage your files with ease.

Centralized Project Management

Run complex simulations for optimization, calibration, and pipe design directly in the cloud. Submit multiple jobs and keep working.

Advanced Simulation Modules

From raw data to refined design, HydroBOA Builder transforms how you manage engineering files. View, edit, and analyze SWMM and EPANET models with a powerful offline-first platform.

See HydroBOA Builder in Action

Analyze pressure variations, detect low-pressure zones, optimize valve settings, and model transient events across complex pipe networks. HydroBOA's cloud compute scales to handle large distribution system models with thousands of pipes, providing extended-period simulation results streamed directly to interactive network maps and time-series charts.

Capabilities

Professional EPANET 2.3 simulations online. Analyze water distribution systems, optimize pipe networks, and simulate pressure zones in your browser.

Explore More Engineering Tools

HydroBOA runs the same official, unmodified EPANET 2.3 solver in the cloud that engineers run on the desktop. For an identical .inp model, the cloud engine returns bit-for-bit identical results — the same pressures, flows, heads, tank levels, water age, and chlorine concentrations, matching the desktop output down to the last decimal in the .rpt report and binary .out results files.

Because it is the same EPA/OWA EPANET 2.3 engine and not a re-implementation, cloud results are numerically equivalent and fully reproducible against desktop EPANET 2.3. There is no accuracy trade-off for moving to the browser: you get validation-grade results without installing anything.

Cloud vs Desktop EPANET 2.3: Bit-for-Bit Identical Results

Inside the EPANET workspace — draw networks on a live map, edit attributes, run GIS and hydrology tools, then analyze head, pressure, and water quality with full version control.

See HydroBOA EPANET in Action

HydroBOA runs the official EPANET 2.3 engine natively in the cloud. Open any .inp file, edit pipes, junctions, reservoirs, tanks, pumps, and valves through the visual network editor, then simulate and inspect results without leaving the browser. No Windows dependency, no local installation, no license hassle.

EPANET Online Water Distribution & Pipe Network Analysis | HydroBOA

EPANET Use Cases

EPANET is the gold-standard hydraulic and water-quality simulation software developed by the U.S. Environmental Protection Agency for pressurized pipe networks. Engineers and utilities worldwide rely on EPANET 2.3 to model water distribution systems, analyze pressure zones, simulate water age and chlorine decay, and optimize pump scheduling across networks of any scale.

The engine performs extended-period simulation of hydraulic behavior and water quality within drinking water distribution systems — tracking flow rates, pressures, tank water levels, and chemical concentrations throughout the network over multiple time steps.

Unlike desktop EPANET which requires manual file management and lacks collaboration features, HydroBOA integrates EPANET within a unified workspace alongside SWMM and HEC-RAS. Version-controlled models, automated pipe design, severity analysis for network vulnerability assessment, and cross-platform access from any device make it the professional choice for water distribution engineers and utilities.

For computationally intensive tasks, HydroBOA uses secure cloud services:

☁️ Cloud Compute When It Matters

HydroBOA is a professional engineering app for SWMM, EPANET, and HEC-RAS project workflows that runs in your browser and on mobile devices — with an offline-first design environment and on-demand cloud simulation power.

The Difference

A look inside the SWMM, EPANET, and HEC-RAS workspace — drafting, GIS, version control, and side-by-side analysis, all in one browser-based engineering environment.

See HydroBOA in Action

🗺️ GIS + Modeling + Versioning in One System

HydroBOA accelerates drafting, iteration, optimization, and reporting. Export to desktop tools for specialized regulatory or 2D simulations when required.

How It Fits With Legacy Tools

Most engineering SaaS stops working without internet. HydroBOA doesn’t.

The core design environment runs locally on your device:

🔌 Offline-First Engineering Workspace

HydroBOA minimizes unnecessary data transfer.

🔒 Privacy-First Architecture

Experience the next level of hydraulic engineering with HydroBOA.

Ready to Start?

HydroBOA accelerates the engineering work around modeling:

⚡ 90% Faster Preliminary Design

HydroBOA — Hydraulic Design Anywhere, Cloud Power When You Need It

Select a .inp file to upload. It will be saved to your projects list.

HEC-RAS traditionally demands significant desktop resources and Windows-only installation. HydroBOA eliminates these constraints by running the engine on scalable cloud infrastructure. Manage river models from any device — edit cross-sections, define flow data, configure 2D mesh areas, and execute unsteady simulations directly from your browser or mobile device.

Handle complex 2D mesh generation, terrain processing, and multi-day unsteady flow simulations without taxing local hardware. HydroBOA's cloud infrastructure scales dynamically for large-scale dam breach analyses, regional flood studies, and coupled 1D/2D models that would overwhelm a typical workstation.

Results are delivered as interactive flood maps with depth grids, velocity vectors, and water surface elevation profiles. Export to GIS-ready formats or generate regulatory-grade PDF reports directly from the platform.

Run HEC-RAS river simulations online. 1D and 2D flood modeling, floodplain management, and cloud-scale engine execution.

HEC-RAS documentation classifies up to 1–3 ft of water-surface-elevation difference between identical 2D runs — explicitly “on the same or different computers” — as “hydraulically reproducible” (not significant for hydraulic studies). Every cloud-vs-desktop difference above sits far inside that published envelope: the largest single-cell difference on the representative 2D model is about a quarter inch (~0.02 ft) — roughly 50–150× smaller than HEC's range. Deterministic regimes — 1D steady, unsteady, structures, and sediment — match bit-for-bit; 2D and coupled regimes match well within HEC-RAS's own reproducibility envelope.

The benchmark — HEC-RAS's own tolerance

Decision-grade flood & hazard products

What we measured — a representative 2D model

Sediment transport (mobile-bed) — both input modes

HEC-RAS Documentation — Numerical Reproducibility (2D Unsteady Flow User's Manual, v7.0), U.S. Army Corps of Engineers, Hydrologic Engineering Center.

Source

Cloud vs Desktop HEC-RAS: Result Fidelity

Water-quality modeling is live in the cloud on the genuine HEC-RAS engine: water temperature (full energy budget and equilibrium temperature), the multi-constituent Nutrient Simulation Module (algae, ammonium, nitrate, organic nitrogen, organic and inorganic phosphorus, and dissolved oxygen), general constituents, solids, mass injection, and multi-module coupling. Across every water-quality model we have validated — including junction networks and multi-constituent tidal runs with genuine flow reversal over a 14-day cycle — cloud results are bit-for-bit identical to a native Windows HEC-RAS run (max|Δ| = 0 on every constituent and thermal dataset), whether the model arrives already prepared or is built from a raw model in the cloud.

Water quality — validated, cloud = desktop

HEC-RAS Online River Hydraulics & Flood Simulation | HydroBOA

HEC-RAS Use Cases

HEC-RAS (Hydrologic Engineering Center's River Analysis System) is the definitive river hydraulics modeling software for civil engineering practice. It is widely used worldwide for flood insurance studies, dam safety evaluations, and bridge/culvert design.

The system performs one-dimensional steady and unsteady flow calculations, two-dimensional unsteady flow modeling, combined 1D/2D hydrodynamic simulation, sediment transport and mobile bed computations, and water temperature and water quality modeling.

HydroBOA combines the HEC-RAS engine with cloud scalability, automated GIS-based terrain processing, and version control built for teams working on high-stakes flood-compliance projects. Unlike standalone desktop HEC-RAS, HydroBOA lets your team collaborate on river models in real time, with full audit trails and cross-platform access from Windows, macOS, Linux, iOS, and Android.

A real city's drainage network — the Bellinge catchment in Odense, Denmark — open and smooth on a nine-year-old iPhone 7. The full SWMM, EPANET, and HEC-RAS platform, fast on hardware most apps have abandoned.

Offline geospatial vectors rendered with clarity.

Cartographic Precision

Intelligence woven into every document you read.

Neural Summary

Your assets, organized and indexed for enterprise scale.

Sovereign Data

HydroBOA uses a single unified file across the entire infrastructure lifecycle. The same .boa model carries your work from design, through construction phase tracking and as-built recording, into long-term asset management — one source of truth, with no exports, no handoffs, and no data lost between separate tools.

A sophisticated ecosystem for hydrologists, civil, and environmental engineers. Professional SWMM, EPANET, and HEC-RAS modeling on Windows, Linux, macOS, Android, and iOS.

HydroBOA: All-in-One Engineering App

Fine-tune your SWMM models with our sophisticated multi-objective calibration engine.

Choose the .inp file you want to calibrate.

Step 1: Select File

Set your calibration parameters and targets.

Step 2: Configure Calibration

Calibration Module

Leverage powerful differential evolution algorithms for optimal hydraulic design and analysis.

Choose the .inp file you want to optimize.

Step 2: Configure Optimization

Optimization Module

Optimize Low Impact Development controls for sustainable urban drainage.

Choose the .inp file for LID optimization.

Step 2: Configure LID

LID Optimization Module

Streamline your pipe network design process with intelligent, automated suggestions.

Set your design parameters and constraints.

Step 2: Configure Design

Automated Pipe Design

Identify critical pipes and nodes and assess network vulnerabilities.

Choose the .inp file for severity analysis.

Step 2: Configure Analysis

Severity Analysis Module

Best value for heavy users and large studies.

100 Credits

10 Credits

25 Credits

50 Credits

A small top-up for a few more simulations.

5 Credits

Deploy your own custom models and algorithms on our scalable infrastructure.

Custom

Get started with HydroBOA's core platform for all your modeling needs.

Standard

Full platform access with LID optimization and network severity analysis.

Ultimate

The complete package for model optimization and calibration.

Plus

The complete suite for automated pipe design and comprehensive analysis.

Premium

Choose the subscription that best fits your engineering needs. Special pre-launch pricing available now!

Find the Perfect Plan

HydroBOA runs the official EPA-SWMM 5.2.4 executable in the cloud, not a WebAssembly approximation. Results match desktop SWMM identically.

Native EPA Engine

Open any .inp file directly in your browser. Edit subcatchments, conduits, junctions, and storage units with the visual editor — no desktop software required.

Zero Installation

Upload your SWMM model, configure simulation parameters, and execute runs on scalable cloud infrastructure. Results stream back in real time with interactive maps, time-series plots at nodes and links, and exportable reports in PDF and CSV formats. HydroBOA's offline-first design means you can edit models without internet and sync simulation jobs when connectivity returns.

Run EPA SWMM 5.2.4 simulations directly in your browser. Professional stormwater modeling, urban drainage design, and flood risk assessment without software installation.

Run SWMM Online for Stormwater and Drainage Modeling | HydroBOA

SWMM Use Cases

EPA SWMM (Storm Water Management Model) is the industry-standard dynamic rainfall-runoff simulation model developed by the U.S. Environmental Protection Agency. Used worldwide by civil and environmental engineers, SWMM 5.2.4 simulates single-event and continuous hydrology with full hydrodynamic routing through urban drainage networks, combined sewers, and natural channel systems.

The model tracks water quantity and quality through subcatchments, conveyance networks, and storage-treatment facilities. It handles complex rainfall patterns, snow melt, groundwater interactions, and real-time control rules for pump stations, weirs, and regulators.

HydroBOA provides an integrated environment where SWMM models work alongside EPANET and HEC-RAS within a unified workspace. Automated optimization with Differential Evolution and BOA algorithms, GIS-based catchment editing, Git-like version control, and cross-platform access from Windows, macOS, Linux, iOS, and Android make HydroBOA the most capable SWMM modeling platform available.

Learn how to run SWMM, EPANET, and HEC-RAS online with our step-by-step guides. Master flood optimization and pipe design in the browser.

Engineering Tutorials & Cloud Simulation Guides | HydroBOA

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HydroBOA: All-in-One Engineering App

See HydroBOA run on a 2016 iPhone 7

One file, from design to construction to asset